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Journal articles on the topic 'Dam construction'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Ye, You Hua, Jin Wu, Shi Shi Lin, Jie Li, Jian Feng Zou, and De Yong Yu. "An Elicitation from the Construction of Dam on the Inlet of Sea for the Urban Planning and Urban Construction." Advanced Materials Research 450-451 (January 2012): 985–88. http://dx.doi.org/10.4028/www.scientific.net/amr.450-451.985.

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Urban planning and urban construction are two important aspects during the urbanization process. Dam, one of the common projects in urban planning and urban construction, has induced more and more interest by far. Negative ecological effect was the mainly view on the dam construction. Does all the plans and constructions of dam were destructive to ecosystem? In order to answer this question, a dam on the inlet of sea in Dongchong, Shenzhen City, China was chosen, field investigation and remote sensing analysis were carried out. Present study aims to test if the planning and construction of dam on the inlet of sea is beneficial to the mangrove ecosystem. Results showed that the planning and construction of dam on the inlet of sea had brought an environment hospitable to mangroves and increased the distribution area of mangrove ecosystem. Results indicated that the planning and construction of dam on the inlet of sea was beneficial to the mangrove ecosystem and not all the planning and constructions of dam were disadvantage to ecosystem. This study may contribute to knowledge of how to maximize favorable factors on the ecosystem in the future urban planning and urban construction.

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2

MACDONALD, A., G. M. DAWSON, and D. C. COLESHILL. "RECONSTRUCTED CARSINGTON DAM: CONSTRUCTION." Proceedings of the Institution of Civil Engineers - Water Maritime and Energy 101, no. 1 (March 1993): 17–30. http://dx.doi.org/10.1680/iwtme.1993.22980.

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3

Ishibashi, W., and K. Hino. "Construction of Urayama Dam." Concrete Journal 32, no. 9 (1994): 66–75. http://dx.doi.org/10.3151/coj1975.32.9_66.

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4

Huzita, Tomohumi, Ryu Noda, and Chihiro Kayo. "Regional Economic Impacts from Timber Check Dam Construction—A Comparison with Concrete Check Dam Construction." Forests 11, no. 10 (October 8, 2020): 1073. http://dx.doi.org/10.3390/f11101073.

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Recently, many mountain disasters caused by natural phenomena, such as typhoons and heavy rains, have struck Japan, where check dams are used as important disaster prevention structures. Meanwhile, increased timber use in Japan is expected to revitalize regional economies, thus drawing attention to the use of timber in check dams. However, comparisons between timber and concrete check dams, in terms of their impact on the regional economy, have been overlooked in previous studies. Therefore, targeting Akita Prefecture in Japan, we evaluated quantitatively the respective regional economic impact of timber and concrete check dam construction through an input–output analysis. An extended input–output table was developed based on the revenue and expenditure data obtained from interviews with check dam construction companies. The construction cost and amount of sediment runoff prevention of a concrete check dam was unified with those of a timber check dam to evaluate their respective economic impact. In both cases, the impact of timber check dam construction was about 12 to 13% larger. In brief, timber check dam construction was found to have a more positive impact on the regional economy than concrete check dam construction. However, with the regional self-sufficiency ratio of the lumber and wood products sector at less than 20%, or the lumber price at 60% of its current price, the economic impact of constructing a timber check dam becomes smaller than that of a concrete check dam. In other words, it is important to harvest, process, and use timber regionally to contribute to the regional economy. Specifically, using timber that is processed, rather than simply harvested, in the region has a larger economic impact on the region. Additionally, in timber check dam construction, procuring inexpensive timber and reducing construction costs may be a trade-off for revitalizing the regional economy.

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TRIPP, J. F., J. DAVIE, and M. P. SHEFFIELD. "CONSTRUCTION OF MAENTWROG NEW DAM." Proceedings of the Institution of Civil Engineers - Water Maritime and Energy 106, no. 4 (December 1994): 299–310. http://dx.doi.org/10.1680/iwtme.1994.27230.

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6

Wagner, Chris. "Batu Hampar dam – design and construction of an RCC dam." Dams and Reservoirs 21, no. 2 (June 2011): 77–90. http://dx.doi.org/10.1680/dare.2011.21.2.77.

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7

Zhang, Ai Jun, Long Fei Xu, Wen Chao Yang, and Yu Qi Zhang. "3D Numerical Simulation of Elastoplastic Consolidation Process of Fly Ash Dam." Applied Mechanics and Materials 444-445 (October 2013): 1283–89. http://dx.doi.org/10.4028/www.scientific.net/amm.444-445.1283.

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The total consolidation process in the construction of hydraulic fill fly ash dam is calculated and analyzed by using the Biots consolidation theory and Cam-Clay model. Meanwhile, some problems such as characteristics of subsidence, excess pore pressure and stress of dam, influences coming from consolidation of hydraulic fill fly ash dam caused by drainage layer in dam foundation, etc, are analyzed. Results show that constructing hydraulic fill fly ash dam in saturated fly ash ground is feasible, and setting drainage layer in the dam foundation can greatly expedite the consolidation speed of dam, which is propitious to the safety of dam.

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8

Sasaki, Shun, Koichiro Suzuki, Atsuhisa Yoshino, and Seiichi Chouno. "Technical Features of Shin-Katsurazawa Dam to Be Coaxially Raised with Existent Dam and Measures to Solve the Problems Involved." Journal of Disaster Research 13, no. 4 (August 1, 2018): 595–604. http://dx.doi.org/10.20965/jdr.2018.p0595.

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Among the dams managed by Japan’s Ministry of Land, Construction and Transport, Shin-Katsurazawa Dam is the first dam to be renewed by coaxially raising the embankment of an existent dam. Raising the embankment of an existent dam that is in operation involves various problems that are different from the ones involved in constructing a new dam, such as evaluation of the foundation base rock and integration of concrete of the old and new dam bodies. The technical features of Shin-Katsurazawa Dam as a coaxially raised dam and measures taken to solve the various problems involved are presented.

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9

Guan, Tao, Bing Yu Ren, and Deng Hua Zhong. "The Method of Unity3D-Based 3D Dynamic Interactive Query of High Arch Dam Construction Information." Applied Mechanics and Materials 256-259 (December 2012): 2918–22. http://dx.doi.org/10.4028/www.scientific.net/amm.256-259.2918.

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Aiming at the problem that it’s hard to get the real construction information during the site management of high arch dam, this paper proposes the method of Unity3D-based three-dimensional (3D) dynamic interactive query of high arch dam construction information. Firstly this paper elaborates the basic theory of this method, and then adopts parametric modeling method to build the Unity3D-Based 3D virtual scene of high arch dam, combines with database technology and programming technology to realize the 3D dynamic interactive query of dam construction information. Finally this research is applied to the construction of a hydropower station high arch dam to build a system of 3D dynamic interactive query of dam construction information. This system achieves the real-time interactive query and analysis of arch dam construction information to provide technical support for site management scientifically.

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10

Zhang, Cong Jiao, Shi Bao Zhang, and Feng Shan Fan. "Application of High Pressure Jet Grouting Technology in the Seepage Control of Earth Dam Reinforcement." Advanced Materials Research 291-294 (July 2011): 3259–63. http://dx.doi.org/10.4028/www.scientific.net/amr.291-294.3259.

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Based on the construction practice of strengthening dam foundation and cross-strait dam end (0+149～0+330) high pressure jet grouting impervious wall of an earth dam, this paper expounds the construction equipment, technological process, construction parameters and construction method of high pressure jet grouting impervious wall construction. By analyzing the impervious wall’s depth, continuity, strength, permeable rate, the quality of the wall is eligible, and its indexes comfort the design requirements. The experiences are useful in similar earth dam reinforcement construction.

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11

Lu, Xiao Chun, Bin Tian, and Suo Zhang. "Safety Analysis of the Temporary Dam Body of Concrete Faced Rockfill Dam during Construction Period." Advanced Materials Research 255-260 (May 2011): 3676–81. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.3676.

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Concrete faced Rockfill dam (CFRD) is a safe and economical dam type in hydraulic engineering. The temporary dam body for flood control during construction period is usually used for CFRD, so the safety of temporary dam body during construction period is very important. Based on numerical simulation of the seepage field of the temporary dam body of CFRD using nonlinear FEM (Finite Element Method) under the action of flood of the river during construction period, the stability of the dam slope is studied. The effectiveness and applicability of the method introduced is certified through computation in the study on the practical project. The paper provides an effective analysis method for the study on the stability of dam slope of the temporary dam body of CFRD for flood control during construction period.

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12

Niu, Jingtai, Xiang Luo, Zhiping Deng, Yang Zhang, Yingjia Guo, and Zhiqiang Wang. "A monitoring model for the stress on a super-high arch dam during pre-impoundment construction." Water Supply 20, no. 8 (September 23, 2020): 3604–14. http://dx.doi.org/10.2166/ws.2020.225.

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Abstract This paper presents a proposed model for monitoring the stress on a super-high arch dam during construction. Using mathematics, mechanics, and dam engineering principles, the mathematical expressions of the self-weight component of the dam prior to and following the sealing of the bottom of the arch were derived. The visco-elastoplastic constitutive model of dam concrete during construction was identified and used to develop a stress monitoring model for a super-high arch dam. Based on in-situ stress monitoring data collected during the construction of a super-high arch dam, the stress monitoring model was applied to a super-high arch dam accounting for future impoundment, and the key components of the monitoring model were isolated. The results show that the model has high fitting accuracy and incorporates an appropriate selection of factors affecting dam stress. The hydrograph of each component conforms to the structural characteristics of super-high arch dams during construction. This model overcomes the limitations of applying the complete self-weight of the dam body on the cantilever beam and was validated using data from a super-high arch dam construction project. Thus, this paper provides evidence for a safety monitoring model for super-high arch dams during construction.

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13

ALEM, Z., T. WOODS BALLARD, T. W. BALLARD, and C. MAKINSON. "KARAMEH DAM, JORDAN: DESIGN AND CONSTRUCTION." Proceedings of the Institution of Civil Engineers - Water Maritime and Energy 130, no. 4 (December 1998): 189–206. http://dx.doi.org/10.1680/iwtme.1998.31047.

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14

Shinohara, Y., M. Kojima, K. Hayasaka, and T. Naitoh. "Pumping SEC Concrete for Dam Construction." Concrete Journal 23, no. 5 (1985): 25–34. http://dx.doi.org/10.3151/coj1975.23.5_25.

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15

TAKAHASHI, Hiroshi, and Makoto Yakata. "RISK SHARING ON DAM CONSTRUCTION PROJECTS." Journal of Construction Management, JSCE 9 (2002): 19–28. http://dx.doi.org/10.2208/procm.9.19.

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16

BRIDLE, RC, PR VAUGHAN, and HN JONES. "EMPINGHAM DAM - DESIGN, CONSTRUCTION AND PERFORMANCE." Proceedings of the Institution of Civil Engineers 78, no. 2 (April 1985): 247–89. http://dx.doi.org/10.1680/iicep.1985.1002.

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17

Adams, W. M., Edward Goldsmith, Nicholas Hildyard, and Geoffrey E. Petts. "The Effects of Dam Construction: Review." Geographical Journal 151, no. 3 (November 1985): 380. http://dx.doi.org/10.2307/633022.

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18

Nield, Michael C. "Grout Curtain Construction At Bolivar Dam, Ohio." Environmental and Engineering Geoscience 24, no. 1 (February 14, 2018): 121–36. http://dx.doi.org/10.2113/gseegeosci.24.1.121.

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Abstract Bolivar Dam, located in eastern Ohio, is an embankment dam constructed by the U.S. Army Corps of Engineers in 1937 as part of the Muskingum River Basin Project for flood control. As a result of seepage concerns observed at the dam during several flood events over the life of the project, seepage reduction measures, including a partial-depth seepage barrier wall through the embankment and a grout curtain in the left abutment, were designed and constructed. These dam safety modifications were constructed between 2014 and 2016. During flood events, Bolivar Dam experiences excessive seepage through the glacial outwash foundation as well as through a network of open joints within the left bedrock abutment. Seepage in the bedrock abutment could erode/scour the dam embankment at the bedrock contact, potentially leading to dam failure. To lower this potential risk of dam failure in the left abutment, a grout curtain was constructed between the new seepage barrier wall and an existing grout curtain across the emergency spillway. The new grout curtain is designed to impede groundwater seepage, resulting in reduced groundwater velocity/energy downstream of the grout curtain, thereby decreasing its potential to scour or transport fine-grained embankment material. The double-line grout curtain is approximately 65 ft (19.8 m) deep and 400 ft (121.9 m) long and was completed in November 2015 as part of a major dam safety modification project. Two thin limestone units encountered during drilling proved to be problematic and posed various challenges during construction. It was common during drilling to lose water circulation within the vicinity of these limestone units, which then required the use of downstaged grouting methods. The majority of the grout volume for the project was placed within these downstaged intervals. This article presents the risk-informed decisions that were made during both design and construction of the grout curtain and includes various lessons that were learned during this process.

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19

Liu, Ke Ding. "Three-Dimensional Finite Element Force Analysis for Rockfill Dam of Changjiakeng Reservoir." Advanced Materials Research 804 (September 2013): 311–15. http://dx.doi.org/10.4028/www.scientific.net/amr.804.311.

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Through analyzing rockfill dam structures mechanical characteristics in construction process and operational process, this paper adopts finite element method to carry out structural analysis for rockfill dam of Changjiakeng reservoir. Deducing distribution law of the dams stress and displacement in construction process and operational process. Analysis results show that, rockfill dam construction of Changjiakeng reservoir is reasonable, it meets the requirements for design. The analysis results provide a certain reference for design and construction of rockfill dam structure.

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20

Chen, Y. L., C. J. Wang, S. Y. Li, and L. J. Chen. "The effect of construction designs on temperature field of a roller compacted concrete dam — a simulation analysis by a finite element method." Canadian Journal of Civil Engineering 30, no. 6 (December 1, 2003): 1153–56. http://dx.doi.org/10.1139/l03-076.

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In this paper a numerical simulation of the construction process of roller compacted concrete (RCC) dams is presented. The following features of construction of mass concrete have been considered: hydration heat, age, placing temperature, starting placement date, and placing speed. A 3-D finite element model of the Long-Tan RCC dam, which is to be built in the Guangxi Autonomous Region in China, was analyzed. Temperature distribution and evolution inside the RCC dam were calculated during and after the completion of the dam. Using FortranTM code, a 3-D thermal simulation analysis of a high RCC dam can be realized on a computer at the construction site. Based on the real factors during the construction period, engineers can predict the distribution of temperature in the RCC dam. Therefore, engineers can take appropriate measures to control concrete temperature to reduce thermal stress within the dam. The effects of the concrete placing temperature, construction speed, and starting date on the temperature are discussed. It has been found that the maximum temperature in a dam can be reduced by 20% through temperature control measures.Key words: RCC dam, thermal simulation analysis, finite element method, temperature field, construction schedule.

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21

Zare, Rahim, and Behzad Kalantari. "Evaluating Negative Environmental Impacts Caused by Dam Construction." Urban Studies and Public Administration 1, no. 1 (May 17, 2018): 42. http://dx.doi.org/10.22158/uspa.v1n1p42.

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<p><em>Dams are one of the most important structures in the water resources transmission and storage systems. Thus, given the growth and development of dam construction in the world, evaluating environmental consequences of the dam has high importance. Dams leave positive and negative impacts on the environment. The destructive impacts of dam construction include social, economic, hydraulic, biological, health, and atmospheric impacts, etc., leading to change and complexity. Hence, given the importance of the positive impacts of dams, it is essential that negative environmental impacts of the dam to be minimized for sustainable development. The current article evaluates the negative environmental impacts caused by dam construction</em>.<em></em></p>

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22

Ormann, Linda, Muhammad Auchar Zardari, Hans Mattsson, Annika Bjelkevik, and Sven Knutsson. "Numerical analysis of strengthening by rockfill embankments on an upstream tailings dam." Canadian Geotechnical Journal 50, no. 4 (April 2013): 391–99. http://dx.doi.org/10.1139/cgj-2012-0255.

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The consolidation process could be slow in an upstream tailings dam; therefore, the stability can reduce due to an increase in excess pore pressures when the dam is raised. The safety of the dam can be enhanced by constructing rockfill berms on the downstream side. This paper presents a case study on the strengthening of an upstream tailings dam with rockfill berms. The finite element analyses were performed for modelling the staged construction of the dam and for optimizing the volume of the rockfill berms. The dam was raised in 11 stages; each stage consisting of a raising phase and a consolidation phase. The study shows that the slope stability of the dam reduced due to an increase of excess pore pressures during the raising phase. The stability of the dam was successfully improved by utilizing rockfill berms as supports on the downstream side. A technique has been presented to minimize the volume of the rockfill berms so that the required stability can be achieved at minimum cost. This paper shows that the finite element method can be a useful tool for modelling the consolidation behaviour of an upstream tailings dam and minimizing the volume of the rockfill berms that may be needed to maintain the stability of the dam during staged construction.

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23

Parrales, Gloria Santana, Beatriz Irene Caballero Giler, and Maria Shirlendy Guerrero Alcivar. "Packaging sixto duran ballen and the dam la esperanza." International journal of physical sciences and engineering 2, no. 3 (September 19, 2018): 43–50. http://dx.doi.org/10.29332/ijpse.v2n3.199.

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The dam is a reservoir that stores about 450,000,000 cubic meters of water, has multiple purposes allowing flood control, produces irrigation water, for human consumption and shrimp farming in the area center of the province of Manabí. The first studies for the construction of the dam were carried out in the years 1970 to 1975 as a result of the hydrological/economic feasibility plan of the Province of Manabí, and of the integral hydro-agricultural area of the Carrizal Chone Basin. After several preliminary studies with different international firms and with changes of designs in 1992, the Dragados and Constructions SA Company was in charge of the construction of what is now the Manabí water project. It is located in the parish of Quiroga approximately 12 kilometers from the cantonal canton of Bolívar Canton, Calceta, with an extension of 2,500 hectares, with a construction area of 120 hectares and will allow irrigation of 17,000 hectares of the central area of Manabí. The objective of the work is to make an analysis of the construction of the La Esperanza dam. For this, the logical historical method was used, as well as the bibliography search to know the historical construction of the dam, as well as the observation method.

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24

Meng, Mei Li, Li Wei Han, and Hai Bin Gao. "Stability Analysis and Evaluation of the Dam Influenced by Bridge Construction." Applied Mechanics and Materials 71-78 (July 2011): 1375–78. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.1375.

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Drilling bored piles foundation has been built in the dam and reservoir because of the highway bridge across the dam. Considering the bridge built, the horizontal and vertical force will be passed and act on the dam base. Based on Bishop method, the stability of the dam was analyzed and results showed that the dam can not satisfied with the slope stability requirements. Therefore, concrete measures for reinforced were put forward in order to remove dangers and reinforce the dam.

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25

Zhao, Chun Ju, Hua Wei Zhou, Yi Hong Zhou, and Chun Yu Wang. "3D Digitalization Modeling for Visualization of Dam Construction Process." Advanced Materials Research 594-597 (November 2012): 2951–56. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.2951.

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It is established a visualization simulation mechanism of dam construction process at first. Then terrain contours are converted into grid mesh by contours discrete method to establish the terrain model. The 3D dam model, foundation pit, construction road are built. Then the dam model is digitalized to create the dam database. After that, all of the models are rendered by using 3DSMax, and then documents of models and materials are exported with a plugin of OgreMaxSceneExporter to assure that they can be identified by an effective graphics rendering engine--OGRE. Finally, a dam construction process visualization system for a practical case is developed, by which an interactive virtual reality environment is created for engineers and administrators.

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26

Cui, Bo, Ning Liu, and Chen Sheng Zhao. "Comprehensive Evaluation of the Coupling Construction Progress and Quality of High Core Rockfill Dam." Applied Mechanics and Materials 256-259 (December 2012): 2439–43. http://dx.doi.org/10.4028/www.scientific.net/amm.256-259.2439.

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Construction progress and quality are two important objectives in the construction of high core rockfill dam. It is of great significance to evaluate their control effect comprehensively. In this paper, the progress and quality of high core rockfill dam construction management are the study objectives. in order to achieve the real-time control of coupling them, the comprehensive evaluation method for the quantitative analysis of their complex relationship is proposed. Based on the comprehensive analysis of the mechanisms of the influence related factors in the construction process, the comprehensive evaluation index system of the high core rockfill dam coupling construction progress and quality is designed ; the comprehensive evaluation index data acquisition process is analyzed; the comprehensive evaluation method for the high core rockfill dam filling unit is put forward. finally, a comprehensive evaluation of high core rockfill dam filling unit model based on TOPSIS is established. Engineering examples show that this method plays a guiding role in real-time control of coupling high core rockfill dam construction progress and quality.

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27

Zhang, X. Q., P. W. M. Tam, and W. Zheng. "Construction, operation, and maintenance of rubber dams." Canadian Journal of Civil Engineering 29, no. 3 (June 1, 2002): 409–20. http://dx.doi.org/10.1139/l02-016.

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Rubber dams are inflatable and deflatable hydraulic structures. Thousands of rubber dams have been installed worldwide for various purposes: irrigation, water supply, power generation, tidal barrier, flood control, environmental improvement, and recreation. Furthermore, rubber dams have been used in cold areas where the temperature is as low as 40°C. The simplicity and flexibility of the rubber dam structure and its proven reliability are key considerations in its wide scope of applications. Based on the management practices of 20 rubber dams in Hong Kong in the past 35 years, interviews with rubber dam experts and practitioners, and the investigation to the construction of a recent rubber dam, this paper provides a detailed discussion on various issues related to the construction, operation, maintenance, and repair of rubber dams.Key words: construction, hydraulic structure, maintenance, operation, repair, rubber dam.

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28

Lei, Wei Dong, Tie Lin Fu, Rui Chen, and Wen Bin Luo. "Influences of Loading Mode and Construction Speed on Position of Phreatic Line of a Tailings Dam." Advanced Materials Research 261-263 (May 2011): 1724–28. http://dx.doi.org/10.4028/www.scientific.net/amr.261-263.1724.

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The location of phreatic line of a tailings dam is of significant importance on the stability of the tailings dam. In this study, extensive numerical analysis in ABAQUS have been performed to study the influences of loading mode and construction speed on position of the phreatic line of tailings dam in the process of construction from the existing elevation of 59 m to the final elevation of 100 m. The results show that the location of the phreatic line changes very little at the lower part of the dam; by contrast, the location of phreatic line dramatically changes at the upper part of the dam. At a certain construction speed, loading mode has negligible influence on the position of the phreatic line during the duration of one rising round for the tailings dam. The construction speed has more significant influences on the position of phreatic line in the middle term in the service duration of the tailings dam than in the later period.

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29

Ji, Dong Yu. "Three-Dimensional Finite Element Analysis for Concrete Gravity Dam of Shachang Reservoir." Applied Mechanics and Materials 488-489 (January 2014): 565–68. http://dx.doi.org/10.4028/www.scientific.net/amm.488-489.565.

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Through analyzing concrete gravity dam structures mechanical characteristics in construction process and operating process, this paper adopts finite element method to carry out structural analysis for concrete gravity dam of Shachang reservoir. Deducing distribution law of the dams stress and displacement in construction process and operating process. Analysis results show that, concrete gravity dam of Shachang reservoir is reasonable, it meets the requirements for design. The analysis results provide a certain reference for design and construction of concrete gravity dam structure.

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30

Huang, Shu Ping, Jian Yun Fu, and Yan Cai Li. "Temperature Control Measures Optimization of RCC Gravity Dam." Applied Mechanics and Materials 226-228 (November 2012): 1153–56. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.1153.

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With the continuous development of dam construction technology, the RCC dam becomes one of the most popular types of dam in the world with its unique advantages. Temperature control measures research is one of the key issues of design and construction of mass concrete structures. How to choose the proper temperature control measures to prevent concrete cracks becomes the important problem of dam construction technology. In a RCC gravity dam, the climate environment is so severe that a single temperature control measure can’t meet the requirements of temperature control and crack prevention. In this paper, 3D FEM simulation analysis is used to calculate temperature field and thermal creep stress field during the whole construction process. According to the simulation results, the temperature control measures design of the dam has been comprehensively evaluated and the temperature control measures of this project have been put forward.

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31

Chang, Jun, Bo Cui, and Deng Hua Zhong. "Research on Construction Schedule Real-Time Control of High Core Rock-Fill Dam Based on Digital Monitoring." Advanced Materials Research 588-589 (November 2012): 1062–67. http://dx.doi.org/10.4028/www.scientific.net/amr.588-589.1062.

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The real-time control of the construction schedule for the high core rock-fill dam is researched, and the construction schedule forecasting and analysis method for the high core rock-fill dam is proposed based on the real-time monitoring and simulation. According to the basic principles of schedule control, the control process of construction schedule for the high core rock-fill dam is established, and the implementation method of the dynamic adjustment and control for construction schedule of the high core rock-fill dam is put forward by comparing the current construction schedule with the plan and combining measures such as earthwork dynamic balance optimization and dynamic adjustment and optimization of construction method. The achievement has been used in a hydropower project in southwest China, which provides strong technical support for the high standard construction of the project.

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32

Liu, Ke Ding. "Finite Element Simulation Analysis for Gravity Wall Rockfill Dam of Gaozhai Reservoir with Engineering Mechanics." Advanced Materials Research 644 (January 2013): 362–65. http://dx.doi.org/10.4028/www.scientific.net/amr.644.362.

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Through researching gravity wall rockfill dam structure’s mechanical characteristics in construction and operating process, this paper adopts finite element method to carry out simulation analysis for gravity wall rockfill dam of Gaozhai reservoir. Deducing distribution laws of the dam’s stress and displacement in construction and operating process. Analysis results show that, gravity wall rockfill dam construction of Gaozhai reservoir is reasonable, it meets the requirements for design.

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33

Ozcelik, Mehmet. "Effects of construction material properties on dam type selection (Sariguzel Dam – Turkey)." International Journal of Geotechnical Engineering 11, no. 4 (August 24, 2016): 368–75. http://dx.doi.org/10.1080/19386362.2016.1223264.

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34

Morita, Kentaro, Shoichiro Yamamoto, and Noboru Hoshino. "Extreme life history change of white-spotted char (Salvelinus leucomaenis) after damming." Canadian Journal of Fisheries and Aquatic Sciences 57, no. 6 (June 1, 2000): 1300–1306. http://dx.doi.org/10.1139/f00-050.

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Dam construction has serious consequences for anadromous fishes. We examined the effects of migration barriers formed following dam construction on the migratory behavior of white-spotted char (Salvelinus leucomaenis) by comparing migrants in accessible below-dam river sections with migrants in inaccessible above-dam river sections. The frequency of smolts (i.e., potential migrant) was higher for the below-dam sections than for the above-dam sections, and in contrast, the frequency of residents was higher for the above-dam sections. Above-dam sections had lower fry (age 0+) densities and consequently had higher growth rates compared with below-dam sections. A transplant experiment revealed that the majority of the below-dam fish adopted a resident strategy, as well as above-dam fish, when both had experienced the above-dam environment. We conclude that high growth as a result of low density promotes residency in the above-dam sections.

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35

Tan, Min. "Application of Finite Element Method for Dry Masonry Overflow Dam Analysis." Applied Mechanics and Materials 394 (September 2013): 332–35. http://dx.doi.org/10.4028/www.scientific.net/amm.394.332.

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Through analyzing dry masonry overflow dam structures mechanical characteristics in construction process and operational process, this paper adopts finite element method to carry out simulation analysis for dry masonry overflow dam of Daxilong reservoir. Deducing distribution law of the dams stress and displacement in construction process and operational process. Analysis results show that, dry masonry overflow dam of Daxilong reservoir construction is reasonable, it meets the requirements for design.

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36

Yamazawa, Shuichi, Kanae Moriya, and Mikiyasu Nakayama. "Gender Issues in Involuntary Resettlement due to Dam Construction: “Dam Brides” and the Tokuyama Dam in Japan." International Journal of Social Science Studies 6, no. 4 (February 23, 2018): 13. http://dx.doi.org/10.11114/ijsss.v6i4.2954.

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Many dams have been constructed around the world. Consequently, a great number of people have been displaced from their homelands by dam construction. These developments have tended to overlook gender differences. Thus, the resettlement process may exacerbate existing gender disparities in the communities affected by the project. Gender issues have seldom been studied in involuntary resettlements due to dam construction projects in Japan. This study was conducted about the Tokuyama dam, which has the largest storage capacity in Japan. Previous studies implicitly assume that all of the displaced people were originally from the submerged old Tokuyama village. However, our study revealed that some resettlers were in fact from outside of the old Tokuyama village. These were women called “dam brides” because they married men who were originally from Tokuyama, in the period immediately prior to the dam construction and subsequent resettlement. The men mostly met these “dam brides” in cities where they worked as seasonal workers in the winter. Knowing that the men would secure hefty compensation by leaving their homes in the old Tokuyama village, the “dam brides” decided to get married. They lived in the old Tokuyama village for only a few years before relocating to areas which were more “urban” than Tokuyama. These “dam brides,” originally from cities, behaved differently after relocation than those from Tokuyama. They were keener to establish amicable relations with the people in the host community and were thus pivotal in accelerating the merging of the resettlers into their host community.

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37

Wang, Hong Xia, and Ya Hui Gao. "Study on Dam Construction Technology without Foundation." Applied Mechanics and Materials 170-173 (May 2012): 1903–6. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.1903.

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In the impervious system of dam construction technology without foundation and the cofferdam, the cut-off wall, seepage curtain or high-pressure jet, oblique wall, etc. do not exist. It does not require pumping pit and need a lot of pit excavation. the technology can save a lot of investment and greatly speed up the construction speed, shorten the construction period. To study dam construction technology without foundation, the method is technically feasible, and no adverse consequences, completely meet the project needs.

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38

Naylor, D. J., E. Maranha Das Neves, D. Mattar, and A. A. Veiga Pinto. "Prediction of construction performance of Beliche Dam." Géotechnique 36, no. 3 (September 1986): 359–76. http://dx.doi.org/10.1680/geot.1986.36.3.359.

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39

Kamata, Toshiharu. "Construction of Tamagawa Dam by RCD Method." Concrete Journal 25, no. 5 (1987): 28–38. http://dx.doi.org/10.3151/coj1975.25.5_28.

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40

Soemarwoto, Otto. "Minimizing the social impacts of dam construction." Waterlines 10, no. 2 (October 1991): 6–8. http://dx.doi.org/10.3362/0262-8104.1991.032.

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41

WILLIAMS, O. P., and R. A. READER. "DESIGN AND CONSTRUCTION OF KALAVASOS DAM, CYPRUS." Proceedings of the Institution of Civil Engineers 90, no. 5 (October 1991): 975–92. http://dx.doi.org/10.1680/iicep.1991.16186.

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42

Radchenko, V. G., and V. M. Semenkov. "Use of geosynthetic materials in dam construction." Hydrotechnical Construction 26, no. 10 (October 1992): 685–91. http://dx.doi.org/10.1007/bf01544774.

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43

Drozdov, G. M., E. G. Levchenko, M. V. Shchelkanova, and G. K. Skripitsyn. "Monitoring during construction of the Miatla dam." Hydrotechnical Construction 23, no. 3 (March 1989): 138–40. http://dx.doi.org/10.1007/bf01427760.

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44

Zarfl, Christiane, Alexander E. Lumsdon, Jürgen Berlekamp, Laura Tydecks, and Klement Tockner. "A global boom in hydropower dam construction." Aquatic Sciences 77, no. 1 (October 25, 2014): 161–70. http://dx.doi.org/10.1007/s00027-014-0377-0.

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45

Wisafri. "Gerusan Lokal yang Terjadi di Hilir Bendung dan Upaya Pengendaliannya." Jurnal Ilmiah Poli Rekayasa 9, no. 2 (April 15, 2014): 74. http://dx.doi.org/10.30630/jipr.9.2.74.

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Majarity of damages on the dam construction in Indonesia is caused by continuous local scouring at the end side of the dam construction. It grows and reach its lower/bottorm part. It could results in degradation in the dam operation safety. This local scouring was caused by major water flowing passing the dam where there is a high difference level between the top and the end of the dam. Furthermore, it generates inbalancing water flow speed and additional water turbulence. There are different approachs to prevent such damage, and for example by providing one or more additional construction at the end part of the dam. This structure is designed and installed at the bottom part of the dam. Various empirical functions have been developed to design this structure, and one of them is developed by Lacey. The function is reprsented by D = 0.47 * (Q/F)1/2 (D= scouring depth, Q= Discharge, F= the size of the sand particle). However, that function has some limitation. For examples are the local river and dam construction characteristics. Therefore, it is required to be validated by developing a model of dam contructed in a laboratory. Experiments was undertaken by using the model with different characteristics of water flow in order to investigate the scouring pattern, and than method prefentif work

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46

Zheng, Yuexin, Guangxin Zhang, Yanfeng Wu, Y. Jun Xu, and Changlei Dai. "Dam Effects on Downstream Riparian Wetlands: The Nenjiang River, Northeast China." Water 11, no. 10 (September 29, 2019): 2038. http://dx.doi.org/10.3390/w11102038.

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Many studies have found that damming a river can change downstream hydrology, sediment transport, channel morphology, and fish habitat. However, little is known about river dam effects on downstream riparian wetland dynamics and their quantitative relationship with hydrological alterations. In this study, hydrological time series and wetland distribution data spanning nearly 40 years (1978–2016) before and after the construction of a large dam in 2005 across the Nenjiang River in Northeast China were used to reveal the impact of dam on the downstream discharge regime and wetland degradation. Hydro-statistical and stepwise multiple regression analyses were performed to quantify the relationship of riparian wetland area with a metrics of 33 hydrological indicators. Dam construction caused decline in peak discharge, flood frequency, and magnitude. Moreover, 150 km riparian wetlands along the downstream of the dam was largely reduced. The count and duration of high flow pulses, 1-day maximum, and date of maximum discharge changed significantly after the dam construction. The hydrological changes have made a significant contribution to the 44% reduction in riparian wetlands following the dam construction. Our results indicated that hydrological alterations caused by dam regulation led to the area reduction of downstream riparian wetlands. The findings provide relevant information for developing best dam operation practices to protect and restore downstream wetland ecosystems.

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Han, Li Xin. "Force Analysis of Inclined Asphalt Concrete Wall Rockfill Dam Structure." Advanced Materials Research 391-392 (December 2011): 724–27. http://dx.doi.org/10.4028/www.scientific.net/amr.391-392.724.

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Through analyzing inclined asphalt concrete wall rockfill dam structure’s mechanical characteristics in construction process and operational process, this paper adopts finite element method to carry out simulation analysis for inclined asphalt concrete wall rockfill dam of Mobankeng reservoir. Deducing distribution law of the dam’s stress and displacement in construction process and operational process. Analysis results show that, inclined asphalt concrete wall rockfill dam of Mobankeng reservoir construction is reasonable, it meets the requirements for design.

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Xie, Xiang Zan. "Force Analysis for Asphalt Concrete Inclined Wall Rockfill Dam of Zhengcha Reservoir." Applied Mechanics and Materials 488-489 (January 2014): 597–600. http://dx.doi.org/10.4028/www.scientific.net/amm.488-489.597.

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Through analyzing asphalt concrete inclined wall rockfill dam structures mechanical characteristics in construction process and operating process, this paper adopts finite element method to carry out simulation analysis for asphalt concrete inclined wall rockfill dam of Zhengcha reservoir. Deducing distribution law of the dams stress and displacement in construction process and operating process. Analysis results show that, asphalt concrete inclined wall rockfill dam of Zhengcha reservoir construction is reasonable, it meets the requirements for design.

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Huzita, Tomohumi, and Chihiro Kayo. "Regional Economic Impacts from Timber Check Dam Construction—A Comparison with Concrete Check Dam Construction, Part II: The Question of Premium Vouchers." Forests 12, no. 3 (March 15, 2021): 347. http://dx.doi.org/10.3390/f12030347.

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The regional economic impacts of the construction of timber and concrete check dams in Akita prefecture, Japan, were compared. When functions are appropriately unified, a concrete check dam is cheaper to build than a timber one; the difference in construction costs can be used by the government to issue premium vouchers as a regional promotion measure. To evaluate the effect of this, we extended the latest input–output table for Akita Prefecture to include timber and concrete check dam construction sectors. Concrete check dam construction with premium-voucher issuance had a total effect of 46,064,000 yen (economic impact ratio: 1.49; increased employment: 4.68 people). It also had an indirect economic impact on the plywood sector, since plywood was used as formwork, and issuing premium vouchers had a ripple effect on many industries in the region. However, timber check-dam construction had a total effect of 57,706,000 yen (economic impact ratio: 1.86; increased employment: 5.11 people) and a larger effect on the timber, logs, and silviculture sectors. Therefore, despite higher initial costs, timber check dam construction has the greater economic and employment impact on a region through its large ripple effects on the forestry and wood industries.

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Sakamoto, Koji, Yoshimitsu Takayama, and Shoichiro Yamamura. "Technical Features of Tsuruta Dam Redevelopment Project." Journal of Disaster Research 13, no. 4 (August 1, 2018): 605–15. http://dx.doi.org/10.20965/jdr.2018.p0605.

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In general, redevelopment projects of existing dams can significantly reduce the social, financial, and environmental impacts on a community in comparison to the construction of new dams. In addition, as redevelopment projects of existing dams can accomplish the project purpose more quickly than new construction, the expectation is that such projects will be required more frequently. Tsuruta Dam was constructed in 1966 as a multipurpose dam on the first-class Sendai River. After an unprecedented flood in July 2006, a redevelopment project of the dam began in April of the following year (2007). The project was required to minimize the effect to the flood control function of Tsuruta Dam and to minimize the effects to the power generation company, the dam user. Construction work of the upstream-side cofferdam included a reservoir construction at a significant depth of 60 m or more and a dam body drilling work, and had to be conducted under a complicated and tight schedule. This paper is intended to summarize the Tsuruta Dam redevelopment project as an introduction of the experience and technology obtained and provide some lessons to future redevelopment projects of existing dams.

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