Results 31 to 40 of about 435,468 (196)
Difference analysis of methane diffusion properties between tectonic coal and primary coal
, 2022 Primary coal destroyed by geological stresses will form different types of coal structures, and the accumulation and migration of coalbed methane(CBM) are affected by the changes in pore structures, adsorption/desorption, diffusion and permeability.
Kun, ZHANG, Zhen, SHEN, Zhaoping, MENG
core
Adsorption Dynamics Characteristic of Tectonic Coal in Yuwu Coal Mine
, 2020 Aiming at the methane adsorption dynamics characteristics of tectonic coals, Yuwu Coal Mine of Lu’an Group in Shanxi Province was chosen as the engineering background.
ZHANG Zhe, QIN Xinglin
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Geofluids, 2022 Gas extraction by bedding boreholes is a key means to realize safe mining of coal mine and protect the environment. The traditional bedding boreholes are usually constructed in the center of the coal seam, which may not obtain a high methane extraction ...
Chenxu Chang, Jun Dong, Wenqiang Ju
doaj +1 more source
Energies, 2022 As a kind of clean energy, the exploration and development of coalbed methane (CBM) are of great importance and significance. In this paper, the CBM reservoir parameters of a working area in Western Guizhou Province, China, were predicted by using 3D ...
Yuanlong Wei +6 more
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, 2022 In order to achieve high-efficiency gas drainage in stratified tectonic coal seams, this paper takes Yushutian Coal Mine as the test point to carry out the research on high-efficiency gas drainage technology of directional drilling hydraulic fracturing ...
HE Mingchuan
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Energies, 2021 The uniquely soft and fragile nature of tectonic coal makes it difficult to obtain core samples suitable for laboratory experimentation. Preparation of reconstituted tectonic coal (RTC) samples generally adopts the secondary forming method. Reliable coal
Jishi Geng +3 more
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Coal body structure identification and development effect evaluation based on logging response
Meikuang Anquan, 2021 According to the logging response characteristics of different coal structures, this paper quantitatively identified and described the coal structure in the research area, verified the results by drilling and coring.
LI Quanzhong, ZHAO Lingyun, HU Haiyang
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Critical expansion points: Mechanical signs of surrounding rock instability
Deep Underground Science and Engineering, EarlyView.This study proposes the Rock Bearing‐Expansion Model (RockBEM) with critical expansion points (CEPs) to quantify post‐peak damage stages in deep‐buried rock masses via plane strain compression test (PSCT). CEP hysteresis&interval ratios reveal bearing performance dynamics and failure severity, advancing mechanistic insights into deep underground rock ...
Jiaqi Wen +4 more
wiley +1 more source
Deformation characteristics of coal measures and gas occurrence law of coal mines in North China
, 2021 Gas is not only one of the important disaster-causing factors in coal mines, but also an important clean energy. Understanding the deformation characteristics of coal measures and the occurrence of gas is the basis for coal mine gas disaster prevention ...
Wei, WANG +3 more
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Insights into fundamental problems of rockburst under the modern structure stress field
Scientific Reports, 2022 Rockbursts are some of the most severe dynamic disasters in coal mines. In this paper, the discrimination method of the tectonic stress field is proposed by analyzing the modern stress field in China.
Hai Rong +4 more
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