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Journal articles on the topic 'Hydraulic constructions'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

EVDOKIMOV, S. V., and T. V. DORMIDONTOVA. "RELIABILITY ESTIMATION OF HYDRAULIC ENGINEERING CONSTRUCTIONS." Urban construction and architecture 2, no. 1 (March 15, 2012): 64–68. http://dx.doi.org/10.17673/vestnik.2012.01.12.

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The basic positions of calculation of reliability of hydraulic engineering constructions, as systems are presented. The system is understood as set of the elements which are in relations and communications among themselves which form certain integrity, unity. Feature of systems is presence in their structure of elements and communications between them. In the theory of reliability of systems elements are understood as any structural blocks necessary for maintenance of working capacity of system.

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2

Fokin, S., and A. Hramchenko. "About perspective constructions hydraulic agricultural machinery." Актуальные направления научных исследований XXI века: теория и практика 3, no. 9 (December 21, 2015): 231–35. http://dx.doi.org/10.12737/16909.

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3

Liao, Wen-Gen, Shi-Bao Lu, and Ji-Hong Qu. "RISK ANALYSIS OF HYDRAULIC ENGINEERING CONSTRUCTIONS." Environmental Engineering and Management Journal 12, no. 9 (2013): 1773–78. http://dx.doi.org/10.30638/eemj.2013.213.

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4

Tsimbelman, N. Ya, N. M. Malkov, T. I. Chernova, and M. A. Selivanova. "Infilled Shells Constructions in Hydraulic Engineering." IOP Conference Series: Materials Science and Engineering 1079, no. 3 (March 1, 2021): 032016. http://dx.doi.org/10.1088/1757-899x/1079/3/032016.

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5

Dobrodeev, A. A., and K. E. Sazonov. "Physical modeling of ice load on extended hydraulic constructions. The vertical wall constructions." Arctic: Ecology and Economy, no. 4(40) (December 2020): 77–89. http://dx.doi.org/10.25283/2223-4594-2020-4-77-89.

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The authors present the results of studies carried out in the laboratory “Ice tank” of the Federal State Unitary Enterprise “Krylov State Research Centre”, related to the study of the ice effect on extended hydraulic constructions with a vertical wall. They analyze the possibilities of applying the method of physical modeling to investigate the processes of ice-construction interaction in ice tank. The results make it possible to recommend the method of physical modeling as one of the main approaches for studying the interaction specifics of hydraulic constructions with ice. The data of the model experiment can help to construct mathematical models of ongoing processes, as well as to clarify the requirements of regulatory documents.

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6

Matveenkov, F. V. "History of Classification of Hydraulic Engineering Constructions." Occupation Safety in Industry, no. 3 (March 2017): 8–18. http://dx.doi.org/10.24000/0409-2961-2017-3-8-18.

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7

Щурский, O. Shchurskiy, and Пименов. "Safety Problems of Ownerless Hydraulic Engineering Constructions." Safety in Technosphere 2, no. 1 (February 25, 2013): 31–34. http://dx.doi.org/10.12737/209.

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The package of measures for execution of the order No. Pr-626 of the President of the Russian Federation dated March 16, 2009 on ensuring the operational reliability and safety of hydraulic engineering constructions is considered.

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8

Van Asberk, Baron W. F. "MODERN DESIGN AND CONSTRUCTION OF DAMS AND DIKES BUILT WITH THE USE OF ASPHALT." Coastal Engineering Proceedings 1, no. 7 (January 29, 2011): 47. http://dx.doi.org/10.9753/icce.v7.47.

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In recent years quite a number of important coast protection and harbour construction works in Europe, in the U.S.A. and in Japan have been built or strengthened with the use of asphalt according to established methods of construction in various countries. These works have proved to be not only technically sound and durable but also economical in initial capital investment as well as in maintenance costs. Moreover, as the results obtained have been very encouraging, new outlets and methods of construction with asphalt are being sought, and systematically investigated and developed to cover a wider field of application for coast protection and harbour construction works. Although there are many purposes and means of applying asphalt constructions for these works, the author has limited the scope of his paper to describe in particular the fundamental problems related to the hydraulic and asphalt-technical aspects of building dams and dikes of sand according to the hydraulic fill process, covered and protected by a two course hot-mix asphalt revetment or layer. Assuming a general knowledge of the various facets of hydraulic dam and dike constructions and of asphalt construction methods the author deals with essential items concerning the hydraulic and strength design of asphalt revetments for dikes and dams and describes certain details of construction that require particular attention and perhaps further investigation as experience has proved.

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9

Zydroń, Tymoteusz, Andrzej Gruchot, and Eugeniusz Zawisza. "Geotechnical characteristics of unburnt colliery spoils after coal-recovery." MATEC Web of Conferences 262 (2019): 04006. http://dx.doi.org/10.1051/matecconf/201926204006.

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The aim of the study was to determine the geotechnical characteristics of the unburnt colliery spoils after coal-recovery from the dumping site of one of the mines of the Upper Silesian Coal Basin in Poland. Due to grain-size distribution of tested spoils their geotechnical properties were determined using medium-sized apparatuses. In order to verify the suitability of the studied spoils for the construction of hydraulic embankments, the seepage and stability calculations were conducted for models of hydraulic embankments including the effect of flood wave passage on stress conditions within the construction and their slope stability. The test results revealed, that the studied colliery spoils are characterized by favourable values of geotechnical parameters and they fulfil the requirements for soil materials used in the analysed type of constructions. The spoils are characterized by good compactibility, relatively low water permeability and average susceptibility to mechanical disintegration, which in the case of using this material for the construction of hydraulic embankments and using proper compaction technology, should reduce their susceptibility to weathering. The results of seepage and slope stability calculations for hydraulic embankments built of the studied spoils confirmed their suitability for that type of constructions, retaining the proper inclination of slopes, whereas the variant of embankment without sealing is safer from the stability viewpoint.

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10

Zech, Yves. "Constructions hydrauliques: ecoulements stationnaires (Hydraulic structures – steady flows)." Journal of Hydraulic Research 48, no. 4 (August 2010): 555–56. http://dx.doi.org/10.1080/00221686.2010.492096.

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11

BAKLANOVA, Darya Viktorovna, Aleksandr Mikhaylovich KORENOVSKY, and Konstantin Vladimirovich MOROGOV. "ABOUT RELIABILITY OF HYDRAULIC ENGINEERING CONSTRUCTIONS OF THE LAKE KAZENNY AT THE DRAW ATYUKHTA IN THE CITY OF SHAKHTY ROSTOV REGION." Urban construction and architecture 5, no. 2 (April 15, 2015): 68–72. http://dx.doi.org/10.17673/vestnik.2015.02.11.

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The main results of inspections of technical condition of hydraulic engineering constructions of the lake Kazenny on the draw Atyukhta in Grushevka river basin are presented in the article. According to natural observation the dam and the transmission facilities have a lowered level of safety, the constructions are under precritical conditions. In this regard arrangements for reliable and safety operation of hydraulic engineering constructions of this pond are proposed, and the need for reconstruction is proved.

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12

EVDOKIMOV, S. V., and T. V. DORMIDONTOVA. "ESTIMATION CRITERIA OF RELIABILITY AND TECHNICAL CONDITION OF HYDRAULIC ENGINEERING CONSTRUCTIONS." Urban construction and architecture 1, no. 2 (July 15, 2011): 105–8. http://dx.doi.org/10.17673/vestnik.2011.02.23.

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Here are considered the basic estimation criteria of the reliability and technical condition of hydraulic engineering constructions. The basic methods of the estimation and calculation of the reliability of complex technical systems are analyzed. Conclusions are drawn and recommendations how to use these methods are offered with reference to hydraulic engineering objects and constructions.

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13

Bian, Yongming, Jia Jiang, Zhong Jing, Bangxin Han, Anhu Li, and Guangjun Liu. "Design and Application of Hydraulic-Walking Incremental Launching Equipment." Open Construction and Building Technology Journal 7, no. 1 (January 24, 2013): 1–7. http://dx.doi.org/10.2174/1874836801307010001.

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This work designs a novel hydraulic-walking incremental launching equipment. The working principle of the equipment is proposed. Considering that the contact in incremental launching construction is a typical elastic contact problem, and changes in contact state will directly affect the stability of the incremental launching, this work proposes the equilibrium equations of computational contact mechanics and numerical analysis method for the incremental launching equipment through analyzing the working process of the equipments. The proposed model and method are applied in the analysis of typical working conditions of the incremental launching of Donghua Bridge. The structural characteristics in the construction process are analyzed and discussed. The analysis results show that the strength and stability of the steel box girder can meet the construction requirements. The incremental launching of Donghua Bridge was completed successfully. The proposed model and method can be used to predict and analyze the structural performance in incremental launching construction as well as provide theoretical reference and analysis method for similar constructions.

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14

Ivanov, Mikhail Vladimirovich. "USE OF ORTHOGONAL HYDROTURBINES IN LOW-HEAD HYDRO-ELECTRIC POWER PLANTS." Urban construction and architecture 4, no. 1 (March 15, 2014): 68–73. http://dx.doi.org/10.17673/vestnik.2014.01.12.

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Orthogonal hydroturbines constructions used in lowhead hydro-electric power plants are viewed. A new model of hydroturbine for this type of power plants is presented. Exploration technology and engineered physical models of developed hydroturbine construction are described. The results of hydraulic tests of conditions of waterfl ow of orthogonal turbine blades are given.

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15

Biscarini, Chiara, Silvia Di Francesco, Stefano Casadei, Sara Venturi, and Piergiorgio Manciola. "Vulnerability of Hydraulic Constructions in Flood-Prone Agricultural Areas." Water 13, no. 11 (May 31, 2021): 1549. http://dx.doi.org/10.3390/w13111549.

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The conditions of high hydraulic risk are mainly due to the interference between the river network and bridges, their relative access ramps and road embankments located in the floodplain. Actually, bridges are not always structurally adequate to withstand severe flood waves. In flood restoration works, there is an objective difficulty in implementing the structural safety of bridges because of historical, artistic and economic issues. Thus, the risk mitigation strategy often accounts for the assessment of the vulnerability degree of each bridge/road embankment according to an evaluation scale. Here we present a methodology regarding the classification of the vulnerability degree and its application to 84 works located in the alluvial area of the Tiber River, in the area of the Province of Perugia. For the purposes of a synthetic classification of works vulnerability, the individual assessed parameters are compared by means of subsequent contingency tables in order to compute the resulting vulnerability degree.

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16

Osuská, Lucia, Milan Meruňka, and Rudolf Hela. "The Influence of Finely Ground Limestone in the Design of Concrete for White Boxes Regarding the Suppression of Shrinkage." Solid State Phenomena 321 (July 26, 2021): 119–24. http://dx.doi.org/10.4028/www.scientific.net/ssp.321.119.

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For concrete constructions built as underground spaces, basements or cellars, it is necessary for these constructions to be able to resist the influence of groundwater pressure that could disrupt the compactness of the entire construction by its action. For this reason, constructions of so-called white boxes are often used. White boxes are concrete constructions whose main capability is high water impermeability, exhibiting at the same time minimal volume changes. These properties could be accomplished by a series of several technological precautions, one of which is the composition of the concrete mixture itself. The aim of this paper is to evaluate the influence of finely ground limestone and the latent hydraulic addition of finely ground blast furnace slag on the properties of concrete composite such as water impermeability, water absorption, or volume changes. These properties are vital for the construction of white boxes. In this paper, the suitability of the mutual combination of active and internal additive will also be evaluated.

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17

Balzannikov, M. I., A. A. Mikhasek, and Yu M. Galitskova. "A STUDY OF COAST PROTECTION CONSTRUCTIONS BUILT WITH THE USE OF RECYCLED CONSTRUCTION MATERIALS AND THEIR NEGATIVE IMPACT." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 1 (June 15, 2017): 20. http://dx.doi.org/10.17770/etr2017vol1.2639.

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Different types of materials are used in hydraulic structures and coast protection constructions. These materials can be of natural (e.g. stone) and artificial origin (concrete, metal). The main trends typical for building construction now are as follows: cutting a share of natural materials and reusing waste products of dismantling construction objects. As a result of recycling it is possible to produce building materials that look like and have properties characteristic of natural stone materials, gravel, in particular. While gravel is being processed, it is possible to predict that it would obtain such characteristics as grade, frost resistance and strength. Reuse of recycled construction materials is a challenge, because this type of waste can hardly be reduced in volume and requires considerable space for burial. We propose to use gravel produced by processing in hydraulic engineering objects, i.e. in coast protection constructions. For that, we analyzed waste materials characteristics to justify their use in hydraulic structures. The research proved that strength of gravel produced by processing was sufficient enough. On the other hand, its frost resistance and fineness did not satisfy the requirements to materials used in coast protective structures. Besides, the construction of such structures causes water pollution as inert materials placed in waterbodies increase water turbidity. As a large part of the structure is located directly in the waterbody, during the period of the construction inert materials are supposed to be dumped. In this period the water body is filled with a significant amount of fine particles, which leads to an increase in turbidity at the construction site. Thus, we come to the conclusion that it is possible to reuse recycled construction materials in hydraulic engineering structures only on condition of their additional after-treatment processing. We offer to mix gravel produced by processing with cement mortal. As a result we obtain no-fines concrete, which is further processed by hot procedure (with bituminous materials). No-fines concrete can be produced in the form of precast units of 1,4×1,4×0,5 m. The use of prefabricated units will allow to avoid waterbody pollution and protect it from fine particles. Further processing by bituminous materials will enhance its frost resistance and reliability, which in turn will prevent contamination of the water body in the period of coast protection constructions usage.

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18

Dobrodeev, A. A., and K. E. Sazonov. "Physical modeling of ice load on extended hydraulic constructions. Sloping constructions with an inclined edge." Arctic: Ecology and Economy 11, no. 1 (March 2021): 90–100. http://dx.doi.org/10.25283/2223-4594-2021-1-90-100.

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he authors present the results of experimental studies of ice interaction with models of extended hydraulic constructions with a sloping wall carried out in the laboratory “Ice tank” of Krylov State Research Centre. The researchers analyze the possibilities of applying the method of physical modeling to investigate the processes of ice-structure interaction using ice tank. The results make it possible to recommend the method of physical modeling as one of the main approaches for studying the interaction of hydro-technical installations with ice. The data of the model experiment can be used to construct mathematical models of ice breaking mechanism, as well as to clarify the requirements of ragulatory documents.

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19

Progulny, V., N. Hurinchyk, I. Grachov, and K. Borysenko. "POROUS CONSTRUCTIONS OF WATER INTAKE STRUCTURES." Bulletin of Odessa State Academy of Civil Engineering and Architecture, no. 81 (December 7, 2020): 149–55. http://dx.doi.org/10.31650/2415-377x-2020-81-149-155.

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Abstract. Water intake is an essential element of the water supply complex, normal operation of which depends on the quality of the water delivered to the consumer. Therefore, the water supply system should be effectively protected from various contaminants from the source, ice slurries, and juvenile fish. The authors analyze the operation of existing coarse screen devices in channel water intakes; identify their main disadvantages, such as: mechanical jamming (clogging) of the screen holes with debris, leading to its failure and the need to replace, as well as the laborious cleaning and the high cost of screen materials. The article notes that during operation there is an increase in the pressure drop affecting the screen due to the accumulation of a large amount of contaminants on its surface, which could lead to a throughput and a significant amount of pollution. To improve the quality of filtered water and operating conditions, the authors proposed to provide porous pipes installation instead of flat removable screens in the receiving section of the intake well. The material for their manufacture is a polymer concrete, based on crushed granite stones or gravel and a polymer binder – epoxy resin. The article shows the scheme of intake well pipes installation, describes the principle of the proposed design, shows a graph obtained as a result of hydraulic calculation. This design has a number of advantages over flat screens: automation of flushing, less clogging, greater throughput, lack of biofouling, high strength characteristics, low hydraulic resistance and durability. A porous polymer concrete-based structure, which is a pipe system that increases the reliability of water intakes, improves the quality of the water taken from the source and the conditions of operation, has been proposed. The method of hydraulic calculation of porous pipes makes it possible to optimize their design parameters, to determine the diameter and pressure loss in them, which is very important when designing water intakes. The aim of further research is to study the dynamics and degree of porous devices clogging by suspension at different concentrations in natural water.

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20

Ćwiąkała, Michał, Andrzej Greinert, Joanna Korzeniowska, and Paweł Tarasewicz. "The advantage of virgin soil in rural service road constructions." Budownictwo i Architektura 12, no. 3 (September 11, 2013): 129–36. http://dx.doi.org/10.35784/bud-arch.2009.

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Virgin soils as a result of geotechnical processes are element of road’s solid bottom. The bottom ought to have enough capacity and durability which is provided by proper virgin sub-grade’s enhancement. The sub-grade is road’s base course right bottom. It is possible to improve virgin soil’s parameters by road’s hydraulic binding agent. The agent is a mineral frame’s micro-particle extender or enhancement. The researches were focused to define main soil-cement compound’s mechanical parameter called CBR. Compounds consisted of rural virgin soils (five grain-size types) and two hydraulic agent types (endurance rates 3 MPa and 9 MPa). Hydraulic agent’s main component was activated fly ash and white cement (CEM I 42,5 MPa). The ash is from Pątnów Power Plant and is a result of brown coal burning. The researches answered that it is possible to exploit virgin soils in rural service road’s construction thanks to innovative road cements with binding qualities.

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21

Rashchenko, Andriy, Tatyana Dyptan, and Oleg Malyshev. "The Main Features of Hydraulic Fill Soils and River Dnieper Alluvial Deposits in the Kyiv Region." Civil and Environmental Engineering Reports 30, no. 4 (December 1, 2020): 72–89. http://dx.doi.org/10.2478/ceer-2020-0051.

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Abstract The features of the tectonic structure together with the geological and geomorphological zoning of Kyiv city are highlighted in the article. Particular attention is paid to the floodplains of the Dnieper River, which were formed by the hydraulic fill method. As a rule, such sites were created for new constructions and were quickly built up with low rise buildings, the bases of which were made using such hydraulic soils. Completed engineering-geological investigations of sites after hydraulic filling and observation of the base deformation over time allowed setting of the basic regularity and rules for construction on such territories. The ongoing development of the city has also covered these territories, where high-rise buildings, shopping malls, and other buildings are actively being built, and the loads from these must be transferred to reliable bases.

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22

Bandurin, Mikhail A., Irina F. Yurchenko, and Victor A. Volosukhin. "Remote Monitoring of Reliability for Water Conveyance Hydraulic Structures." Materials Science Forum 931 (September 2018): 209–13. http://dx.doi.org/10.4028/www.scientific.net/msf.931.209.

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Analysis of current methods for control and evaluation of technical state for different water conveyance constructions in the field of hydraulic engineering and reclamation was carried out and it showed the necessity of their improvement and development. Significant indices of technical state and operational capability resource of the constructions were defined. Promising methods for evaluation of structures technical state based on the methods of non-destroying control are substantiated. Fundamental principles to carry out technical state monitoring and evaluation of remaining live of projects operational capability were formulated, with the results of methodological approaches analysis in various fields of knowledge were taken into account. Automated technology for technical diagnostics of constructions by the methods of non-destroying instrumental control was developed. This control secures determination of remaining live operational capability of structural elements and structure safety deficit for information support of decision making on operation measures. Ecologo-economic efficiency from adaptation of software and hardware complex for reliability diagnostics of hydraulic structures is stipulated by time expenditure shortening on survey carrying out, by higher quality of decision making and by automation of routine operations for information, collecting, processing and interpretating.

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23

Kosichenko, Yuri M., Oleg Andreevich Baev, and Sergey Mikhailovich Vasilyev. "Geo-Composite Drainage Material for Hydro-Technical and Civil Engineering." Solid State Phenomena 316 (April 2021): 1025–30. http://dx.doi.org/10.4028/www.scientific.net/ssp.316.1025.

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The article deals with the «GP» geo-composite drainage material, which is used in hydro-technical, civil, as well as environmental, industrial and landscape construction. This material is intended for complex application, as a separating, filtering and reinforcing layer in the structures of protective dams on rivers, reservoirs, channels, an earth work of linear transport constructions (automobile and railway facilities) and other hydraulic engineering constructions. It is a combined geo-synthetic material, including a rigid geo-grid of the lattice structure and a filtering geotextile element. As a result of the carried out researches, its basic physical and mechanical characteristics have been established: tensile strength, surface density of geotextile and the material, relative elongation at maximum load, filtration coefficient normal to the material level.

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24

Kurčová, Mária. "The Effect Of Thermal Insulation Of An Apartment Building On The Thermo-Hydraulic Stability Of Its Heating System." Slovak Journal of Civil Engineering 23, no. 4 (December 1, 2015): 8–18. http://dx.doi.org/10.1515/sjce-2015-0018.

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Abstract The contribution aims to investigate the effect of the decreased thermal losses of an apartment building due to the thermal insulation of opaque external building constructions and the replacement of transparent constructions. It emphasizes the effect of the thermal characteristics of external constructions on the functionality of the existing heating system in the building and the related requirements for the renovation of the heating system in order to ensure the hydraulic stability of the system and the thermal comfort of the inhabitants.

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25

Zhao, Ji Yun, Hai Gang Ding, and Liang Zhao. "Research on Electrohydraulic Servo Proportional Speed Regulation System for Anti-Explosion Hydraulic Hoisters." Applied Mechanics and Materials 34-35 (October 2010): 1205–10. http://dx.doi.org/10.4028/www.scientific.net/amm.34-35.1205.

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In terms of poor controllability of motor speed, the drum speed of the anti-explosion hydraulic hoister is fed back and controlled in closed loop. An electrohydraulic servoproportional speed regulation systems for anti-explosion hydraulic hoisters is proposed. Two control constructions are formed, the pump controlled motor system with/without position loop (PCMWP, PCMP, resp.) according to whether the displacement of pump is controlled in closed loop or not. Experiments of two control constructions are made under overflow load and weight load. Experimental results indicate that the presented system can simulate the process of anti-explosion hydraulic hoisters, and closed control loop could promote the control performance of hoister. Compared to the PCMP, the PCMWP is characterized by more stability with better speed follow and better robustness. At the same time, the cage instantaneous sliding at start-up and the pressure shock while braking are avoided effectively relying on the cooperation between the driving system and brake system, which ensure the security for hydraulic hoisters; the method of position correction by using travel switches at the end greatly enhances the precision of parking position.

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26

Luchkina, V. V. "The Prospects of Use of Eco-Friendly Materials in the Cement Industry." Materials Science Forum 945 (February 2019): 1043–46. http://dx.doi.org/10.4028/www.scientific.net/msf.945.1043.

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Portland cement is a main type of construction materials, however his production does harm to the environment. In article the author has considered prospects of production technologies and the main properties of the eco-friendly knitting materials in the concrete used when constructing facilities different function. Researches have shown that alternative types of eco-friendly materials have the limited fields of use, but can widely be used for construction of roads, airfields, hydraulic engineering constructions already in the nearest future. Speed of their introduction in production will depend on activity and demand of consumers for these types of cement.

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27

Paravicini, Gianni. "Ist Wasserbau auch eine Frage der Ästhetik? | Is hydraulic engineering a question of aesthetics?" Schweizerische Zeitschrift fur Forstwesen 159, no. 7 (July 1, 2008): 205–8. http://dx.doi.org/10.3188/szf.2008.0205.

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There is much extended literature about classic technical hydraulic engineering and about the revitalization of bodies of water. This article deals with a third component, which has received little attention by the engineers. The author pleads for more aesthetic in hydraulic engineering, in particular in populated areas where many people use the open water bodies for recreation. It is shown that more aesthetic in hydrologic engineering often also leads to an increased ecological value. With hydraulic constructions in the canton of Lueerne, possible creative elements for the aesthetic and ecological revaluation of the course of creeks are discussed.

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28

Vazquez, J., M. Zug, M. Buyer, and G. Lipeme. "CSOs: tools for assessing their operation in our systems." Water Science and Technology 51, no. 2 (January 1, 2005): 179–85. http://dx.doi.org/10.2166/wst.2005.0046.

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In recent years, regulations have been introduced under European legislation to govern wastewater discharge into natural environments, with particular provisions for combined sewer overflows. It has therefore become indispensable to control the hydraulic behaviour of these constructions. This article addresses the issue of 1D and 3D hydraulic modelling of CSOs. In the case of 1D modelling, a computational tool that is adapted to the hydraulic complexity of side weirs has been designed. For 3D modelling, the Fluent calculation code has been tested. The two modelling approaches have been validated by the data collected from the small-scale model in Obernai (French).

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29

Shtengel, V. G., and V. S. Nedyalkov. "Infared image inspection of ground hydraulic constructions slopes fastening reinforced concrete slabs." Magazine of civil engineering 25, no. 7 (November 18, 2011): 26–32. http://dx.doi.org/10.5862/mce.25.4.

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30

Ciantelli, Chiara, Alessandro Sardella, Elena Pecchioni, Orlando Favoni, and Alessandra Bonazza. "Herodian Machaerus Fortress (Jordan): Investigation of Mortars Belonging to the Hydraulic Constructions." International Journal of Architectural Heritage 14, no. 5 (January 3, 2019): 645–57. http://dx.doi.org/10.1080/15583058.2018.1558312.

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31

Nasritdinov, Kabulzhan Makhamadzhanovich. "The history of national constructions of 1940 (by the example of the Ferghana Valley)." Samara Journal of Science 9, no. 1 (February 28, 2020): 189–92. http://dx.doi.org/10.17816/snv202091211.

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Based on scientific, historical and archival sources the author of the paper analyzes the history of developing plans aimed at irrigation of virgin lands in the central part of the Ferghana Valley in the first half of the 20th century by large Russian scientists and specialists. The author also shows a historical picture of the construction of the irrigation facilities of the Ferghana Valley using the high-speed hashar folk method in 1940. With the construction of hydraulic structures such as the northern and southern Ferghana canals, a new stage began in the development of irrigated agriculture in the Ferghana Valley, since the water of these hydraulic structures made it possible to irrigate new virgin lands in the central part and foothill areas of the Ferghana Valley. But it should be noted that these large and complex irrigation canals were constructed by the peoples of Uzbekistan mainly with the use of primitive tools such as a hoe, a crow, a shovel, a stretcher and pickaxes. For nearly 80 years, these hydraulic structures have provided agricultural areas with life-giving water. The author of the paper also summarizes the essence of economic measures carried out by the Soviet government on the development of irrigated agriculture in the valley.

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32

Yannopoulos, S., G. Antoniou, M. Kaiafa-Saropoulou, and A. N. Angelakis. "Historical development of rainwater harvesting and use in Hellas: a preliminary review." Water Supply 17, no. 4 (December 20, 2016): 1022–34. http://dx.doi.org/10.2166/ws.2016.200.

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The uneven temporal and partial distribution of water resources in Hellas, and especially southeastern regions, has resulted in the construction of various water systems for collection and storage of rainwater, since their very early habitation. Ever since, technologies for the construction and use of several types of cisterns and other relevant hydraulic strictures have been developed. The main diachronic achievements in rainwater harvesting and use in Hellas from the earliest times of humankind to the present is studied. Emphasis is given to the periods of great achievements such as the Hellenistic and the Roman. The major necessity of water justifies not only the innovations found throughout the historical time-line of these constructions but also the most advanced engineering of each era applied to these constructions. Also, the importance of this hydrotechnology and the concept of the value of water-saving to present and future times is considered. Aspects referring to hygienic precautions for the purity of the water collected and stored are another issue that is worth examining.

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33

Wojtasik, Dariusz. "An analysis of physical, hydraulic and mechanic properties of nonwoven needle-punched geotextiles." Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation 40, no. 1 (January 1, 2008): 115–23. http://dx.doi.org/10.2478/v10060-008-0043-0.

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An analysis of physical, hydraulic and mechanic properties of nonwoven needle-punched geotextiles An analysis of physical, hydraulic and mechanic properties of needle-punched nonwoven geotextiles. This paper presents an analysis of technical parameters of needle-punched geotextiles used in engineering constructions. The tests were carried out in order to compare of physical, hydraulic and mechanic properties of needle-punched geotextiles in two different groups of products. First of group, geotextiles, were made of polypropylene fibers (PP) and the second one fabrics, were of polyester filaments (PES). The tests were performed for materials of mass per unit area 250, 400 and 600 g/m2. The results of test showed that parameters of geotextile material depend on structure of fabrics.

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Derzsi, István, and János Takács. "Hydraulic Analyze of Risers of Heating System in High-rise Building." Periodica Polytechnica Mechanical Engineering 63, no. 2 (March 6, 2019): 156–63. http://dx.doi.org/10.3311/ppme.13320.

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At present times, in the context of rising fuel and energy prices the energy saving is very actual phenomenon. A better building insulation and the replacement of large transparent constructions will significantly reduce heat loss of the building. The hydraulic adjustment of heating systems is also a essential requirement for optimum operation of buildings. The peak load of the heating system occurs only a few days a year, mostly the transitional period dominates. Correct settings of control valves and pumps can achieve significant savings from the energy requirement of the building. This study is focused on the hydraulic analysis of rising pipes in reference high-rise building in Bratislava. The main aim of this study was to determine hydraulic behavior of two reference risers and to analyze wall roughness of the old seamless steel pipes and buoyancy effect on hydraulic conditions.

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Silkin, A. M., N. F. Zharnitskaya, and T. V. Nekrasova. "Deflected mode of peats in the bases of network constructions of hydraulic systems." Prirodoobustrojstvo, no. 3 (2017): 48–55. http://dx.doi.org/10.26897/1997-6011-2017-3-48-55.

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Deticek, E., and E. Kiker. "AN ADAPTIVE FORCE CONTROL OF HYDRAULIC DRIVES OF FACILITY FOR TESTING MECHANICAL CONSTRUCTIONS." Experimental Techniques 25, no. 1 (January 2001): 35–39. http://dx.doi.org/10.1111/j.1747-1567.2001.tb00006.x.

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37

Sharkov, V. P. "Pressure of Soil on Cellular Structures of Hydraulic Constructions Produced by Dynamic Impacts." Power Technology and Engineering 53, no. 2 (July 2019): 177–83. http://dx.doi.org/10.1007/s10749-019-01057-1.

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38

Alexeev, V. A. "Artificial land plot as a real estate object." Russian justice 3 (March 25, 2021): 52–55. http://dx.doi.org/10.18572/0131-6761-2021-3-52-55.

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The article deals with the concept of an artificial land plot and critically analyzes its legislative definition. The author establishes the correlation of the concepts ‘artificial land plot’, ‘artificial island’, ‘hydraulic engineering structure’. A proposal is made to eliminate the reference of an artificial land plot to constructions.

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39

Bakshi, Sneha, and Manager Rajdeo Singh. "A petrochemical study of Mughal plasters of Quila-I-Ark, Aurangabad with respect to technology and repair." History of science and technology 10, no. 2 (December 12, 2020): 163–84. http://dx.doi.org/10.32703/2415-7422-2020-10-2-163-184.

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This paper reports the mineralogical composition of western India's 16-17th century Mughal plasters of Quila-I-Ark, Aurangabad to prepare compatible repair mortar and document ancient Indian lime technology. Analytical studies were undertaken for aggregate grain size distribution, thin section analysis, Fourier Transform Infrared Spectrometer (FTIR), X-ray diffraction (XRD), and chemical composition of the plasters by x-ray fluorescence (XRF analysis). The analysis revealed the inclusion of large size basaltic aggregate grains mostly sourced from the water channel of nearby Harsullake. Some of the plaster works show prominent inclusion of small size grains pointing different periods of construction. Creamy white zeolites were found specifically added in the mortar mix to maintain a certain level of humidity during the dry season. The zeolite is highly porous and breaks easily both in dry and wet conditions. The calcite rich limestone with traces of magnesium was sourced as raw material for the plasters. Based on mineralogical composition and binder/aggregate ratio, three phases of historical constructions were documented. FTIR and thin section analysis showed the mixing of some proteinaceous adhesive juice in the lime for improvement in rheological and waterproof properties. The high quantity of large size aggregate grains ensured better carbonation of lime and the source of aggregates remained the same for all phases of historical constructions. The cementation index (C.I.) and hydraulicity index (H.I.) vary between 0.10 to 0.96 and 0.20 to 3.43, respectively showing the plaster is aerial lime with traces of magnesium. The plaster is feebly hydraulic as the hydraulic component calculated varies between 0.88 to 6.10 percent in different samples. A moderate strength plaster with a lime/silica ratio close to 0.33 was prepared for most phases of construction except a few isolated locations. The analytical data will now help to prepare compatible mortar with identical additives for a major repair.

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Bazarov, Dilshod Raimovich, Bekhzod Eshmirzaevich Norkulov, Irina Mikhailovna Markova, Mikhail Ermilov, and Durdona Oblakulovna Tadjieva. "About constructions for the protection of water supply channels from sediment load and driftwood." Agrarian Scientific Journal, no. 8 (August 25, 2019): 69–75. http://dx.doi.org/10.28983/asj.y2019i8pp69-75.

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The article shows the results of the analytical review of the main floating structures used in the water supply channels. It is noted that there are two classes of floating constructions: active - affecting the flow regime and changing its structure in the selected direction (floating regulators, jetting devices for changing the flow structure); passive - eliminating the adverse effect of flow ingredients on the elements of the hydraulic unit of the pumping station, without changing its structure and parameters (debris deflector, aero curtain). The basic requirements for the design of floating devices are formulated: reduction of hydraulic losses (streamlining of pontoons and fenders) increase of stability, durability, maneuverability of conditions for installation on water ensuring the water tightness of hermetic compartments, the possibility of balancing and repair, increasing functional reliability and efficiency. A fundamentally new design of the structural elements of the water supply channel has been proposed to help reduce the flow of both bottom and suspended sediments to the mainstream of the water supply channel.

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EVDOKIMOV, Sergey V., Vladimir A. SELIVERSTOV, and Alla A. ORLOVA. "RESULTS OF MULTI-FACTOR ANALYSIS OF THE CONDITION OF HYDROTECHNICAL CONSTRUCTIONS." Urban construction and architecture 10, no. 1 (March 15, 2020): 71–76. http://dx.doi.org/10.17673/vestnik.2020.01.10.

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Control over the state of the main hydraulic structures of Zhiguli hydroelectric power station is carried out according to observations of the control and measuring equipment installed in the facilities and in their base, as well as the results of systematic inspections and surveys conducted by both the power plant personnel and invited experts. A computer information and diagnostic system for monitoring the condition of facilities is being introduced at the hydroelectric power station. The introduction of this system made it necessary to pay attention to the reliability of the results obtained with the help of instrumentation. The aim of the research is to conduct a multivariate analysis of the state of hydraulic structures Zhigulevskaya HPP on the results of field observations of all devices. It is established that the antifiltration elements of the underground circuit of the HPP building were not effective enough for the specific geological conditions of the base in terms of damping the filtration head. The main pressure drop in the base occurs on the upper tooth of the HPP building, where the maximum filtration gradient is observed, which is very dangerous. In the course of research it was found that several piezometers in the base do not work or their indications cause great doubts, their repair and replacement are required. According to the results of the work, it is concluded that it is necessary to equip the main piezometers of the HPP building with remote water level meters and create an automated system of survey and monitoring of the base state on their basis.

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Serhiienko, Viktor. "Defectoscope for monitoring of a concrete timbering of underground constructions." E3S Web of Conferences 109 (2019): 00084. http://dx.doi.org/10.1051/e3sconf/201910900084.

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The purpose of work is development of a defectoscope for nondestructive identification of spaces in rock mass on border with a concrete timbering. The principle of operation of the device consists in the analysis of parameters of vibration of a timbering after drawing blow to it. The difference from the known developments consists in contactless reception of an acoustic signal with use of the microphone. Parameters of vibration of a timbering are determined under various conditions of its contact with rock mass. Initial requirements for development of a defectoscope are experimentally defined. Its block diagram is submitted and principal specifications are given. Data on approbation of the equipment in hydraulic engineering constructions are given.

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Sharaevsky, G. I., N. М. Fialko, I. G. Sharaevsky, and L. B. Zimin. "EVOLUTION OF THERMOPHYSICAL PROBLEMS IN CONSTRUCTIONS OF VVER REACTORS MAIN CIRCULATION PUMPS." Thermophysics and Thermal Power Engineering 41, no. 3 (October 24, 2019): 45–54. http://dx.doi.org/10.31472/ttpe.3.2019.7.

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Changes in the design of critical critical from the point of view of safety of the nodes of the main circulation pumps of nuclear power units and the corresponding dynamics of the accompanying thermo-hydraulic problems caused by these changes are analyzed. Attention is drawn to the insufficiently studied complex thermophysical processes occurring in tribological pairs of mechanical shaft sealing and sliding bearings, where the normal friction and lubrication conditions can latently go to pre-emergency and insufficiently controlled by existing monitoring systems technical conditions.

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JAMBAA, Soninbayar, Tat’yana Vasilyevna KASATKINA, and Aleksey Mikhailovich BUBENCHIKOV. "APPLICATION OF KUFAREV METHOD TO PROBLEM OF SUBSOIL WATERS MOVEMENT UNDER HYDRAULIC ENGINEERING CONSTRUCTIONS." Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mekhanika, no. 47 (June 1, 2017): 15–21. http://dx.doi.org/10.17223/19988621/47/2.

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Bellendir, L. E., D. Yu Vlasov, V. N. Durcheva, and I. M. Tsarovtseva. "Biofactor role in corrosion of metal and steel concrete structures of hydraulic engineering constructions." «Aviation Materials and Technologies», S1 (2015): 61–66. http://dx.doi.org/10.18577/2071-9140-2015-0-s1-61-66.

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46

Smyvalov, Anatoly, Maxim Rodionov, and Yulia Galitskova. "Justification of application of new types of fastening of slopes of hydraulic engineering constructions." MATEC Web of Conferences 117 (2017): 00159. http://dx.doi.org/10.1051/matecconf/201711700159.

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47

SHEINICH, L., and М. MYKOLAIETS. "THE RESEARCH AND USE IN CONSTRUCTION OF THE BY-PRODUCTS FROM THE THERMAL POWER PLANT HYDRAULICALLY REMOVED ASH CLASSIFICATION." Наука та будівництво 27, no. 1 (April 8, 2021): 3–7. http://dx.doi.org/10.33644/scienceandconstruction.v27i1.1.

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Today the environment protection is one of the most important issues in the world. The utilization of accumulating industrial waste is an up-todate area of construction research. The paper suggests a method for processing an electricity production waste, namely an ash from the hydraulic removal in the thermal power plant (TPP). The special classification by fractions of ashes from the hydraulic removal allows to receive such products as iron-containing product, fine sand (coarse filler), aluminosilicate hollow microsphere, and product with pozzolanic activity (fine filler).The experts of the State Enterprise "The State Research Institute of Building Constructions" and "Engineering Company "Perspective"" have conducted a series of studies on the obtained products properties and chemical composition, as well as on determining the fractional composition of each product. The density and specific surface area were evaluated, and each product binding properties control was performed. It was found that the aluminosilicate hollow microsphere and the product with pozzolanic activity had binding properties, and hardened mortars based on these materials were insoluble in water. Chemical analysis showed that in each of the products, except for iron-containing one, oxides of silicon and aluminum predominated. The iron containing product had a high content of iron oxides and by its composition was close to magnetite.The carried-out studies show that the products obtained during the hydraulic ash removal at TPP have a wide range of applications, both in the construction industry and in the chemical, mining, and metallurgical industries. In construction, these materials can be widely used as active mineral additives in the grinding of cements, or as additives improving the concrete mixtures and concretes properties. The iron-containing product is applicable in the special ultraheavy concretes manufacture.

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Sarukhanyan, Arestak, and Ani Manukyan. "The Technical Data Analysis of Khachen Reservoir’s Hydrosystem." Advanced Materials Research 1020 (October 2014): 839–43. http://dx.doi.org/10.4028/www.scientific.net/amr.1020.839.

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After operation of ground hydraulic constructions, it is necessary to implement monitoring during several years; which includes collecting data concerning filtration flow, deposition, strength, sliding and stability of dams and other hydraulic constructions. The technical state study conclusions are drawn upon the collected data analyses. The aim of the work is to make a technical state study of Khachen reservoir hydro system to find out the further exploitation opportunities separated nodes, to process engineering measures program, by the realization of which there will be established conditions for their further safe operation. For the above mentioned purpose there have been implemented the followings: technical data analyses of the dam and it’s separate nodes, technical-economic analyses of the dam, analyses of storage alluvium, net volume and water balance, physical-mechanical properties lab studies of dam ground. Homogeneity estimation of dam by geophysical methods, discovering of filtration centralized discharge across dam and lateral prism, making conclusions, separate nodes description located in the dam, technical state analyses and making conclusions, strength and stability analyses of the dam under static and seismic loading conditions, taking into consideration the ground laboratory experiments and dam geodetic measurements.

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Gaxiola-Hernández, Alberto. "Laboratory determination of hydraulic anisotropy of dense graded asphalt concrete." Ingeniería e Investigación 38, no. 1 (January 1, 2018): 67–73. http://dx.doi.org/10.15446/ing.investig.v38n1.67166.

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Dense graded asphalt concrete is widely used in roads as support structure for vehicle loads, however, is also used for hydraulic purposes in canal linings as well as faces and cores of dams. In the design stage of these constructions it is necessary to have the permeability data of the materials that will be used and, although in some cases it is sufficient to know this parameter in only one direction, in others it is necessary to have it in two directions. This research presents test results of axial permeability in constant head permeameter and the design a of radial permeability test device in asphalt concrete made for hydraulic purposes. As a result it was determined that the compaction process of asphalt concrete, applied in one direction, causes the material to have anisotropic behavior from the hydraulic point of view, resulting in anisotropy ratios 7.1 to 10.4, for the studied asphalt mixture.

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Volosuhin, Victor. "LESSONS OF FAILURES OF HYDRAULIC ENGINEERING CONSTRUCTIONS IN THE PERIOD OF HIGH WATERS AND FLOODS." University News. North-Caucasian Region. Technical Sciences Series, no. 2 (March 2017): 79–84. http://dx.doi.org/10.17213/0321-2653-2017-2-79-84.

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