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Progress of coal fines agglomeration and settlement mechanism based on high efficiency coalbed methane drainage
LI Yong, HAN Wenlong, WANG Yanbin, MENG Shangzhi, WU Xiang, WANG Zhuangsen, MA Zhentao, LIU Du, ZHAO Shihu
2021, 49(2): 1-12. DOI: 10.3969/j.issn.1001-1986.2021.02.001
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Geological unit division and development countermeasures of deep coalbed methane in Southern Yanchuan Block
CHEN Zhenlong
2021, 49(2): 13-20. DOI: 10.3969/j.issn.1001-1986.2021.02.002
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Study on the main controlling geological factors of high yield deep CBM in Southern Yanchuan Block
GAO Yuqiao, LI Xin, HE Xipeng, CHEN Zhenlong, CHEN Gang
2021, 49(2): 21-27. DOI: 10.3969/j.issn.1001-1986.2021.02.003
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Optimization on particle size fraction of lightweight coated ceramsite proppant in coal reservoir
CHANG Xiaoliang, LYU Runsheng, WANG Peng, LI Bing, GAO Lin
2021, 49(2): 28-33. DOI: 10.3969/j.issn.1001-1986.2021.02.004
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Causes for low CBM production of vertical wells and efficient development technology in northern Zhengzhuang Block in Qinshui Basin
JIA Huimin, HU Qiujia, FAN Bin, MAO Chonghao, ZHANG Qing
2021, 49(2): 34-42. DOI: 10.3969/j.issn.1001-1986.2021.02.005
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Numerical simulation of the influence of no-flow recharge aquifer on CBM drainage
LIU Bing, ZHANG Songhang, TANG Shuheng, WANG Pengfei, ZHAI Jiayu, JI Chaoqi
2021, 49(2): 43-53. DOI: 10.3969/j.issn.1001-1986.2021.02.006
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Numerical simulation and test of gas drainage with water jet layered pressure relief and permeability enhancement in soft coal seam
LIU Xiao, LI Yong, XUAN Dequan, HU Shixiong, JING Tianxiang, XU Sen
2021, 49(2): 54-61. DOI: 10.3969/j.issn.1001-1986.2021.02.007
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The enrichment and high yield law of CBM in Yanjiao syncline in Zhijin Block, Guizhou Province
GUO Tao
2021, 49(2): 62-69. DOI: 10.3969/j.issn.1001-1986.2021.02.008
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Practice of enhanced gas extraction by staged fracturing with comb-shaped long hole in coal mine roof
JIA Bingyi, CHEN Dongdong, WU Jie, SUN Siqing, WANG Jianli, ZHAO Jizhan, ZHANG Jie
2021, 49(2): 70-76. DOI: 10.3969/j.issn.1001-1986.2021.02.009
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New mathematical model and key parameters of capillary pressure curves of high-rank coal samples
CHEN Ke, TANG Lei, YIN Chao, HE Wei, ZHANG Wei, QUAN Zheng
2021, 49(2): 77-82. DOI: 10.3969/j.issn.1001-1986.2021.02.010
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Study on Mesozoic magmatic intrusion and Paleozoic multi-mineral genesis mechanism in Huanghebei Coalfield，Shandong Province
WANG Huaihong, SHEN Lijun, WANG Dongdong, ZHU Yuzhen, LI Zengxue, WANG Yongjun, MAO Qiang
2021, 49(2): 83-92. DOI: 10.3969/j.issn.1001-1986.2021.02.011
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3D geological model construction and error analysis of intelligent mining working face
WANG Xinmiao, HAN Baoshan, SONG Tao, SHEN Kai, YUE Hui, LEI Xiaoyu
2021, 49(2): 93-101,109. DOI: 10.3969/j.issn.1001-1986.2021.02.012
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Different-source prediction of gas emission based on SAPSO-ELM and its application
REN Haifeng, YAN Youji, WU Qinghai
2021, 49(2): 102-109. DOI: 10.3969/j.issn.1001-1986.2021.02.013
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Mechanism and control of strong ground pressure in fully mechanized mining face
ZHANG Yin, ZHAO Yi, LI Hao
2021, 49(2): 110-116. DOI: 10.3969/j.issn.1001-1986.2021.02.014
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Evaluation of the development potential of the coalbed methane resources in mining area based on AHP-entropy method
JIA Zhichao, HUANG Huazhou, HUANG Shaobo, ZHOU Yu, WANG Bo
2021, 49(2): 117-124. DOI: 10.3969/j.issn.1001-1986.2021.02.015
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Multi-level fuzzy mathematics-based comprehensive evaluation model of CBM well productivity
FENG Yulong, ZHOU Linyuan, WANG Qian, LIU Chengrui
2021, 49(2): 125-132. DOI: 10.3969/j.issn.1001-1986.2021.02.016
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Geochemical characteristics and genesis of coalbed methane in Baode area
LI Yangbing, ZENG Lei, HU Weiqiang, CHEN Xin, MA Litao, LIU Cheng, HUANG Ying, QIAO Fang
2021, 49(2): 133-141,151. DOI: 10.3969/j.issn.1001-1986.2021.02.017
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Characteristics of shale gas reservoir in Upper Paleozoic coal measures in Yangquan Block, Qinshui Basin
LI Yangyang, LI Xianqing, ZHANG Xueqing, XIAO Xianming, YU Zhenfeng, WANG Baoyu
2021, 49(2): 142-151. DOI: 10.3969/j.issn.1001-1986.2021.02.018
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Prediction of coal seam gas content based on ABC-BP model
ZANG Zijing, WU Haibo, ZHANG Pingsong, DONG Shouhua
2021, 49(2): 152-158. DOI: 10.3969/j.issn.1001-1986.2021.02.019
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Discussion on roof water loss control method of coal seam based on pre-splitting grouting reformation(P-G)
ZHAO Chunhu, WANG Hao, JIN Dewu
2021, 49(2): 159-167. DOI: 10.3969/j.issn.1001-1986.2021.02.020
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Comprehensive exploration of collaps column and three-dimensional construction technology of water plug based on directional horizontal drilling
TIAN Gan, NAN Shenghui, LIN Xudong, FAN Juan
2021, 49(2): 168-175. DOI: 10.3969/j.issn.1001-1986.2021.02.021
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Fracture feature recognition of sandstone after high temperature based on RA/AF
GE Zhenlong, SUN Qiang, WANG Miaomiao, ZHAO Chunhu
2021, 49(2): 176-183. DOI: 10.3969/j.issn.1001-1986.2021.02.022
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Development of deep geothermal energy and its influence on geothermal water flow field: Taking the development of deep geothermal energy in Lankao County for an example
SONG Qianjin, WANG Gang, XU Yichuan, CHENG Lei
2021, 49(2): 184-193. DOI: 10.3969/j.issn.1001-1986.2021.02.023
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Long-term heat transfer performance of underground coaxial heat exchanger for medium-deep geothermal
LI Fengcui, HAN Ershuai, LIANG Lei, WU Jing'an, LU Bingxue
2021, 49(2): 194-201. DOI: 10.3969/j.issn.1001-1986.2021.02.024
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Effect of arbuscular mycorrhizal fungi and Hippophae rhamnoides on the improvement of the dump of open-pit coal mine in the eastern grassland
MIAO Chunguang, YANG Huihui, BI Yinli, SONG Ziheng, GUO Nan
2021, 49(2): 202-206. DOI: 10.3969/j.issn.1001-1986.2021.02.025
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Vegetation disturbance analysis in coal mining area with high ground water level based on Landsat time series NDVI data
FANG Liangcheng, CHEN Yongchun, AN Shikai, XU Yanfei, YIN Mengjie, LI Zhihui, ZHAO Ping, CHEN Yeyu
2021, 49(2): 207-215. DOI: 10.3969/j.issn.1001-1986.2021.02.026
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Beneficial CBM area prediction based on structural elemental quantitative cluster classification
LIU Jing, CHANG Suoliang, LIU Zuiliang, ZHANG Sheng, CHEN Qiang, LIU Bo
2021, 49(2): 216-224,233. DOI: 10.3969/j.issn.1001-1986.2021.02.027
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Analysis of geophone array method in low SNR complex area of Ordos Basin
WANG Zhengliang, XIAO Guoqiang, FU Qunli, LYU Zhenchuan, YAO Zonghui, SHI Qingyang, GAO Bin, YI Hongbin, GAO Qiang, ZHANG Peng, HOU Jie, SHI Bingcheng, WANG Yanduo, JIAO Guixing
2021, 49(2): 225-233. DOI: 10.3969/j.issn.1001-1986.2021.02.028
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Forward simulation of fault detection by transmitting channel wave in thin alternating coal seams
MA Yanlong
2021, 49(2): 234-239. DOI: 10.3969/j.issn.1001-1986.2021.02.029
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Rock breaking mechanism of composite impact of full-size PDC bit based on finite element analysis
PENG Xu, HAO Shijun
2021, 49(2): 240-246,252. DOI: 10.3969/j.issn.1001-1986.2021.02.030
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Difficulties and optimization of wire-line core drilling technology for broken formation in complex structure area of northwest Hunan
KONG Xiangwang, ZHANG Shaohe, WANG Wenbin, SUN Pinghe, WU Dongyu, XIAO Jincheng, HE Hongsheng
2021, 49(2): 247-252. DOI: 10.3969/j.issn.1001-1986.2021.02.031
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Research on the grouting and setting pressure of the automatic hole sealing device in underground coal mine
LI Chengcheng, WANG Yi, WANG Li, DUAN Huijun
2021, 49(2): 253-259. DOI: 10.3969/j.issn.1001-1986.2021.02.032
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Numerical simulation of safe distance through roadway drilling under dynamic load of large diameter rescue well
LI Bizhi, HAO Shijun, LIU Mingjun, ZHANG Qiang, BAI Gang, MO Haitao
2021, 49(2): 260-266. DOI: 10.3969/j.issn.1001-1986.2021.02.033
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