Relevant bibliographies by topics / Shaft sinking

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Shaft sinking'

Author: Grafiati
Published: 4 June 2021
Last updated: 29 July 2024

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Journal articles on the topic "Shaft sinking"

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Levit, Viktor, Viacheslav Kamenets, and Yuriy Mukomel. "ABOUT EXPERIENCE AND PROSPECTS OF VERTICAL SHAFTS SINKING TECHNOLOGIES APPLICATION IN UKRAINE." SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”, no. 3(23)-4(24) 2020 (2020): 78–100. http://dx.doi.org/10.31474/2073-9575-2020-3(23)-4(24)-78-100.

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Purpose. Analysis of production experience, scientific and technical developments and assessment of the prospects for the application and development of technologies for the construction of vertical shafts in Ukraine in the context of the need to restore the coal mining industry to preserve the energy independence of the state. Methodology. The methods of analysis of the accumulated production experience of shaft sinking in Ukraine, in the post-Soviet space and in the leading mining countries, as well as scientific and technical literature were used. Results. The classification of technologies and methods of vertical shaft sinking is considered and supplemented, technological schemes and equipment used and promising for Ukraine for the construction of shafts by conventional and special methods are analyzed, the production experience of the Donetskshakhtoprokhodka and Spetsshakhtobureniie trusts is generalized from the point of view of applicability in the construction of shafts of block No. 12 of PJSC Shakhtopravlenie Pokrovskoe”. The possibility of using a modified parallel technological scheme of shaft sinking has been substantiated. The prospects of mechanized shaft sinking in Ukraine – by drilling and with the use of shaft-sinking machines – are assessed. The characteristics of the conditions for the construction and operation of shaft lining, the final element of the shaft, as a structure and functional complex are given. Variants of combined lining, including those with the use of fiber-reinforced concrete, are considered. Scientific novelty. The results of the analysis of technological schemes and methods of vertical shafts sinking, accumulated production experience and scientific and technical developments are generalized, trends and prospects for the development of technologies are considered. Practical value. The analysis of technological schemes and methods of sinking vertical shafts was carried out on the basis of domestic and foreign production experience. Key words: vertical shaft, sinking technology, shaft sinking flow chart, drilling and blasting operations, shafts drilling, shaft-sinking machine.
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Igolka, D. A., and F. Otten. "Rapid Mechanized Shaft Sinking." Mining Industry (Gornay Promishlennost), no. 6/2020 (December 29, 2020): 22–29. http://dx.doi.org/10.30686/1609-9192-2020-6-22-29.

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REDPATH DEILMANN GmbH from Germany has been sinking and lining two shafts and initial underground development since 2017 on the territory of the Republic of Belarus (Starobinskoe potassium salt deposit, Luban) by request of Slavkaliy LLC. Shaft sinking is one of the most complicated and time-consuming stages in renovation and construction of new underground mines. In the absolute majority of cases, shaft sinking and lining are at the critical path for implementation of such projects. Rapid rates of shaft construction ensure high technical and economic performance during the commissioning phase and earlier supply of end products to the market. The article introduces an innovative method of mechanized mine shaft sinking that provides rapid parallel sinking and lining of the mine shafts. Unique mechanized shaft boring roadheaders (SBR) manufactured by Herrenknecht are employed. Shaft sinking is done in complicate geotechnical and geological conditions intensified by a very low stability of the rocks using a dedicated rock freezing method. Modern materials are used for additional hydrosealing of the tubing liner. Workings in the near shaft insets are driven with roadheaders. A combination of all these solutions makes it possible to accelerate shaft sinking in a safe way without blasting operations and with high technical and economic performance both for the shaft sinking project and the overall construction of the mining and processing plant.
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Neye, Esther, Werner Burger, and Patrick Rennkamp. "Rapid shaft sinking." Mining Report 149, no. 4 (August 2013): 250–55. http://dx.doi.org/10.1002/mire.201300029.

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Borshchevskyi, S. V., K. M. Labinskyi, and S. Yu Halechko. "TO THE QUESTION OF THE ENHANCEMENT OF THE MECHANICAL PROPERTIES AND WATER RESISTANCE OF THE CONCRETE LINING." Science and Transport Progress, no. 17 (August 25, 2007): 195–201. http://dx.doi.org/10.15802/stp2007/17626.

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The basic ways on increase durability and hydroproof properties concrete fastening, promoting organization wаterleaks are considered at shaft vertical sinking of mines by development resources-protect technologies of shaft sinking. The questions of increase of waterproofing properties concrete of shafts are considered. The results of laboratory researches are submitted and the directions of perfection of technology shaft sinking in conditions raised water flows are offered.
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Prokopov, Albert, Marina Prokopova, and Andrey Medvedev. "The use of piles with an adjustable operation mode to restraint the shaft sinking systems’ supporting structures." E3S Web of Conferences 281 (2021): 01013. http://dx.doi.org/10.1051/e3sconf/202128101013.

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The article deals with the problem of ensuring the stability of grillages and pile foundations used to hold shaft sinking systems during the construction of vertical subway shafts. The features of such foundations’ operation in the process of shaft sinking are investigated, in contrast to similar structures that receive pressure from a building under construction. The importance of taking into account the mutual influence of shaft sinking and pile foundations of the shaft sinking systems’ supporting structures is shown. The design of bored piles and the technological scheme of mortar injection are proposed, which provide a change in the operating mode of pile foundations and regulation of its bearing capacity.
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Bołoz, Łukasz. "The analysis of shaft sinking progress as a function of technical and organizational parameters." Multidisciplinary Aspects of Production Engineering 2, no. 1 (September 1, 2019): 203–12. http://dx.doi.org/10.2478/mape-2019-0020.

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Abstract In underground mines, where the deposit is located at considerable depths, mining shafts are key excavations. The project of making the deposit available requires selection of appropriate shaft sinking technology adapted to geological and hydrological conditions and natural hazards. Shafts can be made using the classic drilling and blasting technique or mechanical cutting of the shaft face. Mechanical cutting requires the use of a mining machine, which together with machines for loading and hauling the output and protecting the side walls is a shaft complex. Drilling using mechanized shaft complexes allows for high efficiency and work safety. To improve the efficiency of drilling, it is particularly important to implement many processes in parallel. The article presents an analysis of the progress of shaft sinking with a mechanized complex as a function of technical and organizational parameters. The analysis concerned a new generation cutting shaft complex, developed for the needs of shaft sinking for one of the Polish hard coal mines. The calculations were carried out for a shaft with a maximum diameter of 9.5 m and a total depth of 830 m. The article briefly presents a new solution for the shaft complex. There are presented results of calculations of daily drilling progress and total time of shaft sinking for the developed working technology of this complex. The efficiency of the complex depends on many factors related to technical parameters of individual machines and devices forming the complex and organizational parameters, hence a multi-variant analysis was carried out.
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d’Obyrn, Kajetan, Paweł Kamiński, and Jacek Motyka. "Influence of Hydrogeological Investigation’s Accuracy on Technology of Shaft Sinking and Design of Shaft Lining—Case Study from Southern Poland." Energies 14, no. 8 (April 7, 2021): 2050. http://dx.doi.org/10.3390/en14082050.

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Accuracy of hydrogeological and geotechnical investigation in place of shaft sinking is a key factor for selection of sinking method and design of the shaft lining. The following work presents the influence of the rising level of accuracy of geological data gathered in the area of shaft sinking in the Silesian Coal Basin and technical projects of shaft lining and technology of its sinking, which have been changing over the years. The initial project of the shaft was repeatedly modified. Each modification eventuated in rising requirements for the shaft lining, such as increasing its thickness or changing concrete class. It has become necessary to use additional methods of reinforcing rock mass around the shaft.
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Pershin, Vladimir, Aleksandr Kopytov, and Ahmed Wetti. "Research in the Impact of Dynamic Loads for the Development of Pentice Designs when Sinking Skip Shafts." E3S Web of Conferences 105 (2019): 01056. http://dx.doi.org/10.1051/e3sconf/201910501056.

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In order to protect workers engaged in shaft sinking works artificial protective equipment (buntons) with the support element from powerful I-beams or truss structures are used. They have to withstand enormous push loading, be strong, simple in design, have less labor input during construction and dismantling. Under shaft sinking in case of skip operational winding performance, a protective bunton can be exposed to the rock mass flow in the event of an emergency full skip run. To substantiate the variables and develop the design of pentices when sinking an active hoisting shaft, the skip falls time dependence on the changes in its fall height, taking into account the velocity and the air stream direction in the shaft, was established using mathematical modeling. LLC “SibGorComplexEngineering” together with the Department of Construction of Underground Structures and Mines of T.F. Gorbachev Kuzbass State Technical University have developed several new designs variants of protective buntons for vertical shafts sinking in case of operational winding performance. It is a Z-shaped structure of the offset in height, parallel to each other of upper and lower protective buntons, bushed with sloped reflective metal sheets and it is interconnected by a vertical division wall.
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Lashgari, Ali, Mohamad Majid Fouladgar, Abdolreza Yazdani-Chamzini, and Miroslaw J. Skibniewski. "USING AN INTEGRATED MODEL FOR SHAFT SINKING METHOD SELECTION / KOMPLEKSINIO MODELIO NAUDOJIMAS GRĘŽINIŲ ĮRENGIMO METODUI PARINKTI." Journal of Civil Engineering and Management 17, no. 4 (December 21, 2011): 569–80. http://dx.doi.org/10.3846/13923730.2011.628687.

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Shafts have critical importance in deep mines and underground constructions. There are several traditional and mechanized methods for shaft sinking operations. Using mechanized excavation technique is an applicable alternative to improve project performance, although impose a huge capital cost. There are a number of key parameters for this selection which often are in conflict with each other and decision maker should seek a balance between these parameters. Therefore, shaft sinking method selection is a multi criteria decision making problem. This paper intends to use the combination of analytical hierarchy process and TOPSIS (Technique for Order Performance by Similarity to Ideal Solution) methods under fuzzy environment in order to select a proper shaft sinking method. A real world application is conducted to illustrate the utilization of the model for the shaft sinking problem in Parvadeh Coal Mine. The results show that using raise boring machine is selected as the most appropriate shaft sinking method for this mine. Santrauka Gręžiniai yra labai svarbūs giliose šachtose ir požeminėse konstrukcijose. Gręžiniai įrengiami keliais tradiciniais ir mechanizuotais metodais. Mechanizuotos žemės kasimo technologijos yra galima alternatyva, gerinanti projekto įgyvendinimą, tačiau tam reikia didžiulių kapitalo išlaidų. Pasirinkimui įtaką daro daug tarpusavyje nederančių rodiklių, tad sprendimą priimantis asmuo turi rasti balansą tarp jų. Todėl grųžiniu įrengimo metodo parinkimas yra daugiakriterinių sprendimų priėmimo problemą. Šiame straipsnyje naudojama analitinio hierarchinio proceso ir TOPSIS (artumo idealiajam taškui) metodo neraiškioje aplinkoje kombinacija tinkamam gręžinių įrengimo metodui parinkti. Modelio naudojimo atvejis iliustruojamas realiu pavyzdžiu, sprendžiant gręžinių irengimo problemą Parvadeh anglių kasykloje. Rezultatai rodo, kad keliamasis gręžimo įrenginys parenkamas kaip tinkamiausias gręžiniams įrengti šioje kasykloje.
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Jiang, Hao Liang, and Ri Hui Liu. "Experimental Study on Inner Reinforced Concrete-Block Composite Shaft Lining." Advanced Materials Research 163-167 (December 2010): 1316–20. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.1316.

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Inner reinforced concrete-block composite shaft lining was widely used in vertical shaft sinking by vertical shaft sinking machine (VSM) and freezing shaft. In this paper, the deformation characteristic, failure Patten and the load Bering capacity of inner reinforced concrete-block composite shaft lining are presented ,based on the model test .and the test data are provide for the design and calculation of this kinds of composite shaft lining.
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Dissertations / Theses on the topic "Shaft sinking"

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Evans, John Simon. "Problems in shaft sinking." Thesis, University of Nottingham, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358167.

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Taylor, Amy Jean. "Full-scale-lateral-load test of a 1.2 m diameter drilled shaft in sand /." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1263.pdf.

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Rocio, Marco Aurélio Ramalho. "Caracterização da rede aqüífera da região de Caçapava-Paraibuna com o emprego de técnicas de sensoriamento remoto." Instituto Nacional de Pesquisas Espaciais, 1993. https://web.bndes.gov.br/bib/jspui/handle/1408/13737.

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Este trabalho teve como objetivos a definição, do ponto de vista lito-estrutural, de áreas favoráveis à descarga das águas subterrâneas em rochas do embasamento, na escala de 1:50.000 e, nessas áreas, a localização de pontos para perfuração de poços tubulares. Foram empregados dados planialtimétricos, lito-estruturais fotointerpretados e de campo. Foram discriminados altos e baixos topográficos, altos e baixos estruturais e áreas de diferentes densidades de zona de junta e hierarquizadas as unidades geológicas em função das freqüências de junta associadas. A integração dos dados levou à discriminação de áreas pouco a muito favoráveis à descarga relativas a cada unidade litológica. Os dados de capacidade específica de poços existentes apontam uma correlação satisfatória com a classificação feita para as áreas favoráveis à descarga das águas subterrâneas no embasamento.
The integration of topographic, remote sensing and field data was carried out in order to define favourable groundwater discharge sites on a basement area, in the scale of 1:50.000, and also to locate water boreholes. There were defined topographic high and low areas, structural highs and lows, areas with different joint zone densities and the lithological units were ordered in relation to their associated joint frequencies. Less to more favourable discharge areas were defined. Specific output data show fair correlation with the areas classified as favourable to groundwater discharge.
Bibliografia: p. 53-55.
Dissertação (mestrado) - Instituto Brasileiro de Pesquisas Espaciais, São José dos Campos, 1993
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Santos, Tainan Gabardo Miranda dos. "Análise e modelagem do escoamento transitório de fluidos de perfuração." Universidade Tecnológica Federal do Paraná, 2015. http://repositorio.utfpr.edu.br/jspui/handle/1/1660.

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Petrobras; CNPq
Fluidos de perfuração apresentam comportamento tixotrópico e normalmente gelificam quando em repouso. A gelificação é fundamental para evitar que cascalhos provenientes da perfuração do poço se depositem sobre a broca em eventuais paradas no processo. Nessas condições são necessárias altas pressões para reiniciar o escoamento do fluido e, consequentemente, a perfuração. Por outro lado, pressões muito elevadas podem danificar as formações rochosas no fundo do poço. Dessa forma, um maior conhecimento sobre tixotropia e sobre o escoamento de materiais tixotrópicos se torna inevitável para melhor controle do processo. O mecanismo que controla o fenômeno de tixotropia ainda não é bem definido e a modelagem matemática representa um desafio. O objetivo do trabalho proposto é desenvolver um modelo matemático para o estudo da transmissão de pressão em fluidos de perfuração. A presente dissertação apresenta uma revisão de trabalhos encontrados na literatura aberta que abordam e modelam o fenômeno de tixotropia e o escoamento transitório de fluidos compressíveis. O problema é formulado como o escoamento entre o interior da coluna de perfuração e o espaço anular entre a parede externa da coluna de perfuração e a parede do poço. As equações que modelam o problema (conservação da massa, constitutiva do modelo tixotrópico, de estado e da quantidade de movimento) são discretizadas e resolvidas numericamente através de um algoritmo computacional em linguagem Fortran. O modelo é validado com resultados experimentais e numéricos obtidos da literatura. Comparações entre os dados de um fluido de perfuração utilizado em campo pela Petrobras medidos experimentalmente e calculados por três modelos viscoplásticos e um pseudoplástico são realizadas. Os fluidos viscoplásticos, devido à tensão limite de escoamento, não transmitem a pressão à saída do espaço anular. Análises de sensibilidade são realizadas mostrando o efeito da tixotropia do fluido na transmissão de pressão.
Drilling fluids present a thixotropic behavior and they usually gel when at rest. The sol-gel transition is fundamental to prevent the deposit of rock fragments, generated by drilling the well, over the drill bit during eventual stops. Under those conditions, high pressures are then required in order to break-up the gel when circulation is resumed. Moreover, very high pressures can damage the rock formation at the bottom of the well. Thus, a better understanding of thixotropy and the behavior of thixotropic materials becomes increasingly important for process control. The mechanisms that control thixotropy are not yet well defined and modeling is still a challenge. The objective of this work is to develop a mathematical model to study the pressure transmission in drilling fluids. This work presents a review of thixotropy and of different mathematical models found in the literature that are used to predict such characteristic. It also shows a review of transient flows of compressible fluids. The problem is modeled as the flow between the drillpipe and the annular region (space between the wall and the external part of the drillpipe). The equations that describe the problem (mass conservation, momentum balance, constitutive and state) are then discretized and numerically solved by using a computational algorithm in Fortran. The model is validated with experimental and numerical data obtained from the literature. Comparisons between experimental data obtained from Petrobras and calculated by three viscoplastic and one pseudoplastic models are conducted. The viscoplastic fluids, due to the yield stress, do not fully transmit the pressure to the outlet of the annular space. Sensibility analyses are then conducted in order to evaluate the thixotropic effect in pressure transmission.
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Харін, Сергій Анатолійович, Сергей Анатолиевич Харин, and S. A. Kharin. "Розвиток наукових основ проектування будівництва залізорудних шахт на великих глибинах." Thesis, Видавництво НГУ, 2012. http://ir.nmu.org.ua/handle/123456789/175.

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Дисертація на здобуття наукового ступіня доктора технічних наук за спеціальністю 05.15.04 «Шахтне і підземне будівництво». – ДВНЗ «Національній гірничий університет». – Дніпропетровськ, 2012.
Диссертация на соискание ученой степени доктора технических наук по специальности 05.15.04 «Шахтное и подземное строительство». – ГВУЗ «Национальный горный университет». – Днепропетровск, 2012.
Thesis for a Doctor’s Degree of Engineering, Speciality 05.15.04 “Shaft Sinking and Underground Mining”. – State Higher Educational Institution “National Mining University”. - Dnipropetrovs’k, 2012.
Робота присвячена розвитку організаційно-технологічних основ проектування будівництва залізорудних шахт на великих глибинах для забезпечення їх безперервного ефективного функціонування в умовах реконструкції. Знайдені залежності експлуатаційної продуктивності засобів буріння шпурів, навантажування породи і кріплення для вертикальних стволів шахт і протяжних горизонтальних виробок як чинників, що забезпечують, у взаємодії, певні темпи проведення виробок, які відповідають директивному часу реконструкції шахти при використанні другого ступеня розкриття. Встановлені залежності, що характеризують будівництво горизонтів другого ступеня розкриття при різному числі напрямів робіт. За допомогою розроблених в дисертації моделі і комп'ютерної програми отримані поєднання швидкостей проходки комплексу різних виробок горизонтів другого ступеня розкриття родовища, що забезпечують визначений час будівництва таких горизонтів та експлуатаційних продуктивностей засобів буріння, навантажування і кріплення, які відповідають вказаним швидкостям і дозволяють досягати мінімальних витрат на прохідницьке обладнання. На підставі результатів досліджень розроблений комплекс методів управління організаційно-технологічними параметрами будівництва шахт на великих глибинах при ступінчастому розтині родовища.
Работа посвящена развитию организационно-технологических основ проектирования строительства железорудных шахт на больших глубинах для обеспечения их непрерывного эффективного функционирования в условиях реконструкции. Анализ запасов богатых железных руд, находящихся в полях действующих в настоящее время шахт Криворожского бассейна, в диапазоне глубин 1500-2500 м составляет порядка 730 млн. т, а их стоимость в нынешних ценах может быть оценена величиной более 77 млрд. долл. В диссертации установлены зависимости скорости проходки ν протяженных горизонтальных выработок и стволов шахт от крепости горных пород f, в которых осуществляется строительство. Показано, например, что в горизонтальных выработках увеличение f в 2 раза по отношению к базовому уровню приводит к снижению ν в среднем в 1,64 раза. В общем виде зависимость скорости проходки от коэффициента крепости пород может быть отражена с наибольшей достоверностью экспоненциальной функцией. Получены зависимости скорости проходки протяженных горизонтальных выработок и стволов шахт от производительности средств бурения шпуров и погрузки породы, которые носят логарифмический характер. Отмечено, что в горизонтальных выработках возрастание в 2 раза эксплуатационной производительности средств бурения приводит к росту скорости проходки выработки для различных случаев в 1,5-1,72 раза. Увеличение в 2 раза производительности средств погрузки приводит к росту скорости проходки выработки в 1,17 раза. Возрастание в 3 раза производительности средств бурения приводит к росту скорости проходки выработки в 2,1-2,23 раза. Увеличение в 3 раза производительности средств погрузки приводит к росту скорости проходки выработки в 1,24 раза. Установлено, что для темпов проведения стволов весьма большое значение имеют производительность средств бурения, особенно в крепких породах, и средств погрузки. Влияние последнего фактора в этом случае существенно выше, чем в горизонтальных выработках. Исследовано изменение скорости проходки протяженных горизонтальных выработок и стволов шахт от влияния ряда факторов БВР, а также при применении контурного взрывания. Для условий глубоких шахт получены зависимости, отражающие влияние глубины шахты на скорость бурения шпуров и эксплуатационную производительность бурового оборудования. В результате проведенных исследований найдены зависимости эксплуатационной производительности средств бурения шпуров, уборки породы и крепления выработок для вертикальных стволов шахт и протяженных горизонтальных выработок как факторов, обеспечивающих во взаимодействии, определенные темпы проведения выработок, отвечающие директивному времени реконструкции шахты при использовании второй ступени вскрытия. На основе системы предложенных коэффициентов, исследована интенсивность прироста скорости проходки выработок, а также соответствующих этой скорости производительностей бурения, погрузки и крепления по фактору времени сооружения объекта. Установлена значимость различных типов выработок на основании предложенных коэффициентов значимости по требуемой скорости проходки выработки или параметров производительности средств бурения, погрузки и крепления, обеспечивающих данную величину скорости при различной интенсивности добычи полезного ископаемого. Получили дальнейшее развитие схемы ступенчатого вскрытия горизонтов глубоких шахт с помощью слепых капитальных стволов. В предложенных в диссертационной работе новых схемах, в отличие от существующих, реализована возможность ведения работ по вскрытию горизонта второй ступени с помощью множества точек приложения работ; рассматриваются также схемы, целесообразные для применения в условиях шахт с большой протяженностью рудного тела по простиранию. В работе, на основе предложенных организационно-технических параметров, найдены зависимости, характеризующие строительство горизонтов второй ступени вскрытия при различном числе направлений работ. С помощью разработанных в диссертации модели и компьютерной программы получены массивы сочетания скоростей проходки комплекса различных выработок горизонтов второй ступени вскрытия месторождения, обеспечивающие определенное время строительства таких горизонтов и эксплуатационных производительностей средств бурения, погрузки и крепления, отвечающие этим скоростям и позволяющие достигать минимальных затрат на эксплуатацию проходческого оборудования. Получены выражения, отражающие влияние крепости пород на минимальные затраты на эксплуатацию проходческого оборудования и организационно-технологические параметры проходки. В результате исследований определены зависимости, характеризующие влияние параметров буровзрывных работ на минимальные затраты на эксплуатацию оборудования и организационно-технологические параметры проходки. На основании результатов исследований разработан комплекс методов управления организационно-технологическими параметрами строительства шахт на больших глубинах при ступенчатом вскрытии месторождения.
The research deals with the organizational and technological base development of deep iron ore shaft sinking designing in order to ensure their continuous effective functioning under reconstruction conditions. The operational productivity dependences of blasthole drilling, refuse disposal and excavation support means for vertical shafts and extended drifts were found, they being the factors ensuring in their combination certain driving rates in order to meet the reconstruction scheduled time in case of the second opening stage. The dependences characterizing horizon construction of the second opening stage in case of different number of operation directions were found. With the help of the developed model and computer programme some rate combinations of sinking a complex of different drives of the second opening stage were obtained ensuring a certain time period of constructing such horizons and operational productivity of drilling, loading and excavation support means and enabling to minimize the driving equipment operating costs. On the basis of the research a complex of management methods concerning the organizational and technological parameters of deep shaft sinking in case of stepline opening was developed.
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Gandelman, Ariel Dov Ber. "Dureza ao riscamento e coeficiente de atrito de revestimentos de Inconel 625 depositados pelo processo TIG alimentado com duplo arame aquecido." Universidade Tecnológica Federal do Paraná, 2017. http://repositorio.utfpr.edu.br/jspui/handle/1/2834.

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À medida que a tecnologia de perfuração de poços desenvolveu-se nos últimos anos, explorando cada vez maiores profundidades, os efeitos do desgaste e corrosão têm aumentado proporcionalmente. Uma forma de viabilizar a exploração em águas profundas é revestir as ligas de aço de menor custo com ligas especiais de melhores propriedades, como a liga Inconel® 625. Os parâmetros de soldagem utilizados para a deposição de camadas sobre o substrato influenciam diretamente na qualidade e nas propriedades desses revestimentos. O objetivo deste trabalho foi determinar a influência das principais variáveis de soldagem sobre a dureza ao riscamento e coeficiente de atrito da superfície originada após a deposição de cordões de solda para revestimento. Foi utilizada a técnica de soldagem TIG alimentado automaticamente com duplo arame aquecido. As variáveis estudadas foram: Corrente de Soldagem; Velocidade de Soldagem; Corrente para Aquecimento do Material de Adição; Velocidade de Alimentação do Material de Adição e Composição do Gás de Proteção. Para a realização do estudo foi elaborado um planejamento experimental (DoE), composto central, de 05 fatores, totalizando 32 condições, cada uma correspondendo a cordões de solda depositados com diferentes conjuntos de variáveis. Os cordões foram submetidos ao ensaio de riscamento, onde foram medidos a área do sulco e o coeficiente de atrito da superfície. Os riscos gerados foram analisados em tribômetro para obtenção da topografia em 3D, e em Microscópio Eletrônico de Varredura (MEV). A análise da influência das variáveis de soldagem sobre a área do sulco e o coeficiente de atrito foi realizada pela metodologia de superfície de resposta (RSM). Foram obtidos modelos matemáticos de 1ª e 2ª ordem correlacionando as variáveis de soldagem à área do sulco e ao coeficiente de atrito da superfície. Também foram geradas superfícies que correlacionam as variáveis às respostas. Observou-se que as variáveis de principal influência sobre a área do sulco são a velocidade de soldagem, corrente do arame e gás de soldagem, e que a velocidade de alimentação do arame possui forte influência quando relacionada com as outras variáveis de processo. Para o coeficiente de atrito, os fatores de maior influência foram as correlações entre as variáveis, principalmente a corrente de soldagem.
As well drilling technology has developed in recent years, exploring ever greater depths, the effects of wear and corrosion have increased proportionately. One way to make deep-water exploration feasible is to coat lower-cost steel alloys with special alloys of better properties, such as the Inconel® 625 alloy. The welding parameters used for deposition of layers on the substrate directly influence the quality and properties of these coatings. The objective of this work was to determine the influence of the main welding variables on the hardness to scratch and surface friction coefficient originated after the deposition of weld beads for coating. The GTAW welding technique was automatically fed with double heated wire. The variables studied were: Welding Current; Welding Speed; Current for Heating the Addition Material; Feed Speed of Addition Material and Shielding Gas Composition. Design of Experiments (DoE) technique was applied, central composite, of 05 factors, totalizing 32 conditions, each corresponding to weld beads deposited with different sets of variables. The beads were subjected to the scratch test, where the scar area and the surface friction coefficient were measured. The scratches were analyzed in tribometer to obtain the topography in 3D, and Scanning Electron Microscope (SEM). The analysis of the influence of the welding variables on the scar area and the friction coefficient was performed by the response surface methodology (RSM). First and second order mathematical models were obtained, correlating the welding variables to the scar area and the surface friction coefficient. Surfaces that correlate variables with responses were also generated. It was observed that the variables of main influence on the scar area are the welding speed, wire current and welding gas, and that the wire feed speed has a strong influence when related to the other process variables. For the coefficient of friction, the factors of greater influence were the correlations among the variables, mainly the welding current.
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7

Kose, Sadi. "Conventional method vs. coupled analysis in the numerical modeling of shaft sinking." 1996. http://catalog.hathitrust.org/api/volumes/oclc/37329688.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 1996.
Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 38-39).
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Mateveke, Raymond, and Raymond Mateveke. "Excavating through the kalahari group rock masses: practical experience from a small-scale shaft sinking project." Thesis, 2019. https://hdl.handle.net/10539/29154.

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A research report submitted to the Faculty of Engineering and the Built Environment, University of the Witwatersrand, Johannesburg, in fulfilment of the requirements for the degree of Master of Science in Engineering
Tunnelling projects in the weak Kalahari rock masses of the Northern Cape, South Africa present significant design challenges for both large and small-scale excavations. Most of the design of tunnelling and support carried out at present in the Kalahari is based on experience, analytical and empirical methods. The approach typically makes use of limited geotechnical information from the project site.The Kalahari basin is a complex geotechnical environment. Tunnelling projects are sensitive to the variable ground and groundwater conditions. A detailed site investigation to establish the geological and geotechnical model is critical in the selection of the appropriate excavation method and tunnel design. A review of early tunnelling projects revealed that in situ stresses and water infiltration is a long-term stability concern for inadequately lined tunnels through the red clay and weathered rock masses.This project explores the use of numerical modelling to predict the expected failure modes of the weak rock masses, with emphasis placed on concrete liner support for maintaining stability. The support models are analysed using 2D numerical models to determine the Factor of Safety of the liner. A support design criterion for reinforced and unreinforced concrete is introduced and appliedto the models to evaluate the lining thickness. The effect of using 2D plane strain models instead of3D analysis was also investigated. The total displacement of numerical models built in RS2 wascompared to RS3 models.
NG (2020)
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Books on the topic "Shaft sinking"

1

Institution of Mining and Metallurgy (Great Britain), Institution of Civil Engineers (Great Britain), and Institution of Mining Engineers (Great Britain), eds. Shaft engineering: Papers presented at the Shaft Engineering conference. London, England: Institution of Mining and Metallurgy, 1989.

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Shaft Engineering Conference (1989 Harrogate, England). Shaft engineering: Papers presented at the Shaft Engineering conference, organized by the Institution of Mining and Metallurgy in association with the Institution of Civil Engineers and the Institution of Mining Engineers, and held in Harrogate, England, from 5 to 7 June, 1989. London: Institution of Mining and Metallurgy, 1989.

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Bennett, Robert D. State-of-the-art construction technology for deep tunnels and shafts in rock. Vicksburg, Miss: Dept.of the Army, Waterways Experiment Station, Corps of Engineers, 1985.

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Bennett, Robert D. State-of-the-art construction technology for deep tunnels and shafts in rock. Vicksburg, Miss: Dept.of the Army, Waterways Experiment Station, Corps of Engineers, 1985.

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I, Tarasʹev V., ed. Ispolʹzovanie i raspredelenie moshchnosteĭ shakhtostroitelʹnykh organizat͡s︡iĭ. Moskva: "Nedra", 1986.

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Bennett, Robert D. State-of-the-art construction technology for deep tunnels and shafts in rock. Vicksburg, Miss: Dept.of the Army, Waterways Experiment Station, Corps of Engineers, 1985.

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G, Potapov A., and Institut geologii i razrabotki gori͡u︡chikh iskopaemykh (Russia), eds. Tekhniko-tekhnologicheskie osobennosti stroitelʹstva skvazhin v predelakh primorskogo svoda Prikaspiĭskoĭ vpadiny: Sbornik nauchnykh trudov. Moskva: In-t geologii i razrabotki gori͡u︡chikh iskopaemykh, 1987.

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-Ing, Lange Wolfgang Dr, ed. Spezialverfahren im Bergbau und Bauwesen: Vorträge zu einem Kolloquium im September 1986 in Freiberg. Leipzig: Deutscher Verlag für Grundstoffindustrie, 1988.

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Hanna, Kanaan. Coal mine entry intersection behavior study. Washington, D.C. (2401 E St., N.W., MS #9800, Washington 20241-0001): U.S. Dept. of the Interior, Bureau of Mines, 1991.

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János, Zambó. A bányaművelés alapjai. Budapest: Akadémiai Kiadó, 1985.

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Book chapters on the topic "Shaft sinking"

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Wen’an, Zhou, Feng Yu, Hu Feng, Ba Zhaolun, Zhang Qinli, Wang Xiaojun, and Xu Kuangdi. "Conventional Shaft-Sinking." In The ECPH Encyclopedia of Mining and Metallurgy, 1–4. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-0740-1_308-1.

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Qinli, Zhang, An Jianying, and Xu Kuangdi. "Simultaneous Shaft-Sinking." In The ECPH Encyclopedia of Mining and Metallurgy, 1. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-0740-1_400-1.

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Weilian, Zhang, Ba Zhaolun, Cui Guangxin, Xu Changlei, and Xu Kuangdi. "Freezing Shaft-Sinking Method." In The ECPH Encyclopedia of Mining and Metallurgy, 1–3. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-0740-1_430-1.

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Xiangrong, Xia, Yang Wenheng, and Xu Kuangdi. "Deep Shaft Sinking Technique in Ancient China." In The ECPH Encyclopedia of Mining and Metallurgy, 1–4. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-0740-1_583-1.

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Zhaolun, Ba, Cui Guangxin, Ma Yingming, Xu Changlei, and Xu Kuangdi. "Special Shaft Sinking Method, Types and Application of." In The ECPH Encyclopedia of Mining and Metallurgy, 1–2. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-0740-1_57-1.

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Brown, M., D. W. Durieux, C. McGuire, and D. Witow. "A case study in successful use of spot cooling for underground shaft sinking." In Underground Ventilation, 34–41. London: CRC Press, 2023. http://dx.doi.org/10.1201/9781003429241-4.

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"shaft sinking." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik, 1209. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_192549.

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"(shaft) sinking." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik, 1209. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_192550.

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"Shaft sinking." In Surface and Underground Excavations. Taylor & Francis, 2005. http://dx.doi.org/10.1201/9781439834220.ch14.

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"Shaft sinking." In Surface and Underground Excavations, 2nd Edition. CRC Press, 2013. http://dx.doi.org/10.1201/b14818-15.

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Conference papers on the topic "Shaft sinking"

1

Zhang, Yongtao, Yonghui Li, Ming Chen, and Chengming Peng. "Construction technology innovation of Sunk Shaft foundation and composite tower of 1200m highway and railway cable-stayed bridge." In IABSE Symposium, Istanbul 2023: Long Span Bridges. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2023. http://dx.doi.org/10.2749/istanbul.2023.0961.

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<p>The Changtai Yangtze River Bridge is an impressive feat of engineering, boasting the world's largest span cable-stayed bridge with a main span of 1176 meters. The foundation of the cable tower adopted a sunk shaft foundation with a structure size of 95.4×58.2×64m. The tower is 352m high, the middle and lower towers are spatial diamond type four-tower limb concrete towers, and the upper tower is steel-core concrete composite tower. Innovative technologies were utilized during the bridge's construction, including an automated air-lift soil extraction equipment and cluster control system, along with a three-dimensional panoramic rapid imaging technology for efficient and visualized soil extraction and sinking of the sinkhole. Additionally, an intelligent auxiliary decision-making algorithm and control system were developed for digital sinking. The steel reinforcement of the tower adopts the block-based reinforced bar product construction process, and develops the intelligent production line and equipment for component steel reinforcement to achieve high precision, high efficiency and unmanned production of steel components. The tower's concrete construction utilized a new intelligent hydraulic climbing system, which integrated automatic concrete pouring, intelligent maintenance, and synchronous climbing systems, improving quality and safety. The research and development of the W12000-450 intelligent tower crane was also crucial to the bridge's construction, capable of lifting up to 450 tons with a lifting width of 75 meters, including active anti-collision, wire rope wear self-test, and frequency conversion rotation functions.Overall, the implementation of these innovative technologies has made the Changtai Yangtze River Bridge a landmark achievement in modern engineering.</p>
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Khudoyberdiev, Farrukh, Dilmurod Makhmudov, Mansur Israilov, Feruz Pardaev, Yorkin Nurboboev, and Islomitdin Kudratov. "Improving the parameters of drilling and blasting operations during the sinking of the vertical shaft of the second tier of the Sev at the Pskem HPP." In 2021 ASIA-PACIFIC CONFERENCE ON APPLIED MATHEMATICS AND STATISTICS. AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0089545.

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Luo, K., R. W. H. Herrick, A. Majumdar, and P. Petroff. "Internal Temperature Distribution of a Vertical-Cavity Surface-Emitting Lasers Measured by Scanning Thermal Microscopy." In ASME 1996 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/imece1996-1332.

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Abstract This paper presents the first measurements of the temperature distribution inside a vertical-cavity surface-emitting laser. The peak temperature occurred at the intersection of the optical axis and the active region and increased with laser current. The peak temperature was found to be lower, by a factor of two, than numerical predictions and previous measurements using temperature-dependent shift in the output laser wavelength. Comparison of the temperature distribution, that is responsible for thermal lensing of the output laser mode, showed that the measured axial temperature distribution deviated significantly from numerical predictions, primarily due to heat sinking on the top surface near the p mirror. The measured radial temperature distributions along the quantum wells were in very good agreement with numerical predictions.
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Hoorelbeke, Jean-Michel, Joël Chupeau, Jean Loubrieu, Jean-Baptiste Poisson, and Richard Poisson. "The Research in France on Disposal Concepts for High Level and Long Lived Radioactive Waste in Deep Clay Formation." In ASME 2001 8th International Conference on Radioactive Waste Management and Environmental Remediation. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/icem2001-1292.

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Abstract The 15 year research on high level and long lived radioactive waste disposal in deep geological formations is being carried out by the ANDRA within the framework of the 1991 law. The status of the research program corresponds to the sinking of the shafts of the Meuse/Haute-Marne Underground Research Laboratory in an argilite layer. A set of preliminary concepts associated to this argillite layer has been studied to help address the issues raised by the feasibility analysis of a potential repository with respect to safety objectives. These concepts deal with transuranic no heat emitting waste, high level vitrified waste and potentially disposed spent fuel. Provision is made for a high level of flexibility, in particular regarding the reversibility of the step by step disposal process. The architecture of the repository concepts distinguishes disposal zones dedicated respectively to transuranic (type B) waste, vitrified high level (type C) waste, UOX and MOX spent fuel (if the case arrises). Each zone is itself divided into modules. The modular design, which segregates the waste categories, guarantees in particular the flexibility of the repository to contend with potential variations in inventory or waste management modes. This makes it possible to study the feasibility of disposal of each type of waste, in an independent way from the others. For each disposal zone and waste category, current studies, including safety and cost analysis, enable to compare various design options of the disposal cells and modules, prior to selecting those which will be presented in 2005. The paper mentions research targets of the program aiming at answering major scientific and technological questions raised by the concepts. The next milestone of the research program is scheduled at the end of the year 2001. It aims at tuning the approach to be used to assess the feasibility of disposal by 2005. The design will progressively benefit from the research carried out in the Meuse/Haute Marne underground research laboratory and other fields: The resulting data make it possible to fit the models used to dimension the structures, especially in the 2002–2005 period.
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