CFX-based numerical simulation of pipeline leakage of coal mine main gas drainage system
矿业科学学报, 2021 To understand the pipeline leakage characteristics of the large-scale main gas drainage system in coal mines and the multi-physical fields of the gas flow in pipeline, a three-dimensional numerical model is developed based on Ansys CFX and the process of
Cai Jitao +4 more
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Preparation and Sealing Performance of a New Coal Dust Polymer Composite Sealing Material
Advances in Materials Science and Engineering, 2018 In this study, a new coal-dust polymer composite material (CP) was fabricated to improve the borehole gas drainage effect and address the limitations of traditional sealing materials.
Bo Li +3 more
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Gas control technology of directional high-level long borehole at upper corner
Gong-kuang zidonghua, 2020 For problems that normal roof high-level borehole hardly drilled to design position because borehole direction and dip-angle cannot be controlled, and had short effective extraction hole segment, many drainage blind areas, discontinuous drainage and so ...
BAI Gang, YANG Zhong, DUAN Huiju
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Research of Drainage Gas Recovery Technology in Gas Wells
Open Journal of Fluid Dynamics, 2014 Drainage gas recovery technology is the main method of gas recovery process in gas field, which has domestically and internationally been the main gas recovery processing measure in later stage of gas field production. In this context, produced water or condensate liquid will not be carried out of pit shaft by natural gas with the gradual drop of ...
Shuren Yang +4 more
openaire +2 more sources
Adaptive Control Strategy and Model of Gas-Drainage Parameters in Coal Seam [PDF]
, 2022 For a long time, the serious mismatch between negative pressure and drainage parameters of underground gas drainage has been the main reason for the standing engineering problems in coal mines, such as low gas drainage concentration, fast decay, and low ...
Zilong Li +6 more
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Critical point network for drainage between rough surfaces [PDF]
, 2007 In this paper, we present a network method for computing two-phase flows between two rough surfaces with significant contact areas. Low-capillary number drainage is investigated here since one-phase flows have been previously investigated in other ...
Plouraboué, Franck +9 more
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Application of gas drainage technology with separated sources in steep thick seam
Gong-kuang zidonghua, 2014 In order to solve problems of gas overrunning in No.735 Coal Mining Face of Dahuangshan Mine, a gas drainage technology with separated sources was put forward based on analysis of main sources of gas emission of the coal mining face, that is, gas in goaf
CHEN Xinrun, HOU Tiejun, ZHAO Yunfeng
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Investigation on the Gas Drainage Effectiveness from Coal Seams by Parallel Boreholes [PDF]
, 2023 Gas drainage is an important technology to prevent coal and gas outburst, and the drained gas is a kind of clean energy. The gas pressure can characterize gas drainage effectiveness. In this paper, we investigated the effectiveness of gas drainage by gas
Yingfeng Sun +3 more
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Study on Gas Control in Goaf of High Gas Coal Seam: A Case Study of Tingnan Coal Mine, China
Geofluids, 2022 When stratified mining is used in extrathick coal seam, the gas emission in goaf of the first mining face is large, and it is easy to cause gas overrun in the upper corner during the rapid advance of the working face, which seriously affects the safe and
Jiamei Chai
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Research on effective drainage radius and rational borehole spacing of parallel boreholes
Gong-kuang zidonghua, 2019 In order to determine rational borehole spacing of parallel boreholes for gas drainage, a fluid-solid coupling model of gas drainage was established by deducing gas migration equation of coal seam, deformation equation of coal and rock, and coupling ...
SANG Naiwen, YANG Shengqiang, SONG Yawei
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