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Molecular dynamics simulations of CH4 diffusion in kaolinite: influence of water content
Springer Science and Business Media LLC - Tập 6 - Trang 556-563 - 2019
Bin Zhang, Jianting Kang, Tianhe Kang, Guanxian Kang, Guofei Zhao
Understanding the interaction of CH4 with kaolinite is significant for researchers in the fields of coalbed CH4 and shale gas. The diffusion behaviors of CH4 in kaolinite with water contents ranging from 0 to 5 wt% have been analyzed by molecular dynamics simulations. The results of the simulations indicate that CH4 molecules can jump between adjacent holes in the kaolinite matrix. CH4 diffusion c...... hiện toàn bộ
Semi-enclosed experimental system for coal spontaneous combustion for determining regional distribution of high-temperature zone of coal fire
Springer Science and Business Media LLC - - 2022
Jingyu Zhao, Hanqi Ming, Tao Guo, Yuxuan Zhang, Jun Deng, Jiaqi Song, Qiufeng Zeng, Chi‐Min Shu
AbstractTemperature variation and gas generation at different depths and positions in the coal combustion process were studied to determine the propagation and evolution of high temperature regions in the process of coal spontaneous combustion. This study selected coal samples from Mengcun, Shaanxi Province, People’s Republic of China, and developed a semi-enclosed...... hiện toàn bộ
Method for designing the optimal sealing depth in methane drainage boreholes to realize efficient drainage
Springer Science and Business Media LLC - Tập 8 - Trang 1400-1410 - 2021
Minghao Yi, Liang Wang, Congmeng Hao, Qingquan Liu, Zhenyang Wang
The purpose of underground methane drainage technology is to prevent methane disasters and enable the efficient use of coal mine methane (CMM), and the sealing depth is a key factor that affects the performance of underground methane drainage. In this work, the layouts of in-seam and crossing boreholes are considered to analyze the stress distribution and failure characteristics of roadway surroun...... hiện toàn bộ
Division of carbon sink functional areas and path to carbon neutrality in coal mines
Springer Science and Business Media LLC - - 2022
Boyu Yang, Zhongke Bai, Shuai Fu, Yingui Cao
AbstractRemote sensing image data of typical mining areas in the Loess Plateau from 1986 to 2018 were used to analyze the evolution of land use, explore the division of carbon sink functional areas, and propose carbon neutrality paths to provide a reference for the coal industry carbon peak, carbon-neutral action plan. Results show that (1) land use has changed sig...... hiện toàn bộ
Underground location algorithm based on random forest and environmental factor compensation
Springer Science and Business Media LLC - Tập 8 - Trang 1108-1117 - 2021
Xin Qiao, Fei Chang
Aiming at the poor location accuracy caused by the harsh and complex underground environment, long strip roadway, limited wireless transmission and sparse anchor nodes, an underground location algorithm based on random forest and compensation for environmental factors was proposed. Firstly, the underground wireless access point (AP) network model and tunnel environment were analyzed, and the finge...... hiện toàn bộ
Laboratory investigation into the use of soundless chemical demolitions agents for the breakage of hard rock
Springer Science and Business Media LLC - Tập 9 Số 1 - 2022
Kelly-Meriam Habib, Isaac Vennes, Hani S. Mitri
AbstractThe method of drilling and blasting with explosives is widely used in rock fragmentation applications in the mining industry for mine development and ore production. However, the use of explosives is associated with rigorous safety and environmental constraints as blasting creates toxic fumes, ground vibrations, and dust. This study is focused on the use of...... hiện toàn bộ
Research progress of monitoring, forecasting, and prevention of rockburst in underground coal mining in China
Springer Science and Business Media LLC - Tập 1 - Trang 278-288 - 2014
Lin-ming Dou, Zong-long Mu, Zhen-lei Li, An-ye Cao, Si-yuan Gong
As one of the dynamic disasters of coal mines, rockburst seriously affects underground safe coal mining. Based on the laboratory test, field test, and theoretical analysis, this study proposed the principle of the rock burst induced by the combination of dynamic and static stresses and divided such rock burst into three types, including induced by primary dynamic stress, mainly induced by dynamic ...... hiện toàn bộ
Reasonable location of stopping line in close-distance underlying coal seam and partition support of large cross-section roadway
Springer Science and Business Media LLC - Tập 9 - Trang 1-22 - 2022
Dongdong Chen, Yiyi Wu, Shengrong Xie, Fangfang Guo, Fulian He, Ruipeng Liu
Close-distance coal seams are widely distributed over China, and the coal pillars left by the overlying coal seams affect the retracement channel of the underlying coal seam in the stopping stage. Based on the engineering background of close-distance seam mining in a coal mine, the reasonable position of the underlying coal seam's stopping line and the support method of the large section roadway d...... hiện toàn bộ
Clean coal geology in China: Research advance and its future
Springer Science and Business Media LLC - Tập 7 Số 2 - Trang 299-310 - 2020
Xiaoshuai Wang, Yuegang Tang, Shaoqing Wang, Harold H. Schobert
AbstractIn China, the connection between coal utilization and environmental pollution has been increasingly evident due to the rapid growth in energy consumption. Clean coal technology (CCT) is one of the effective methods to address coal-associated pollution. However, CCT needs the practical and theoretical support of clean coal geology (CCG). In this paper, a new...... hiện toàn bộ
Petrographic characteristics and paleoenvironmental history of Eocene lignites of Cambay basin, Western India
Springer Science and Business Media LLC - - 2017
Prakash Singh, Vijay Kumar Singh, Mahendra Singh, Pramod K. Rajak
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