The optimization of coal-bed methane completion and stimulation technologies
YI Xin-bin1;2;DING Yun-hong2;WANG Xin2;LU Hai-bing2;HUANG Gao-chuan2

..............page:629-632

Experimental study on chemical permeability improvement of coal reservoir using chlorine dioxide
GUO Hong-yu1;2;SU Xian-bo1;2;CHEN Jun-hui2;WANG Hui-feng2;SI Qing2;Jiaozuo 454000;China;2.School of Energy Science and Engineering;Henan Polytechnic University;Jiaozuo 454000;China)

..............page:633-636

The geochemistry of trace elements in the No.2 coal seam of Qifengshan coalmine at Datong coalfield
LIU Dong-na 1;ZHAO Feng-hua 2;ZHOU An-chao 1;MA Mei-ling 1;WEN Xue-qin 1;Beijing 100083;China)

..............page:637-643

The petrological features and chemical structure in liquefaction residues of coal rich in semi-fusinite
WANG Shao-qing1;2;TANG Yue-gang1;2;Beijing 100083;China;2.State Key Laboratory of Coal Resources and Safe Mining;Beijing 100083;China)

..............page:644-650

Study on the varieties and distribution of sulfur minerals in CFBC ash/slag
QIAN Jue-shi;ZHANG Zhi-wei;ZHENG Hong-wei;WANG Zhi

..............page:651-656

A numerical simulation study on the flow field of wide-sizefraction coal flotation machine
YANG Run-quan;WANG Huai-fa

..............page:657-661

Protonation and deprotonation of fine kaolinite particles in the inert electrolyte solutions
LIU Ling-yun1;MIN Fan-fei1;ZHANG Ming-xu1;SONG Shao-xian2;LU Fang-qin1

..............page:662-667

Effect and mechanism analysis of calcination temperature on the sulfidation behaviors of iron-manganese based sorbents in hot coal gas
LU Xiao-fang 1;2;REN Xiu-rong 1;WANG Hai-tang 1;XIAO Yu 3;CHANG Li-ping 1

..............page:668-674

CO₂ capture behavior of white mud during its calcination/carbonation cycles
SUN Rong-yue1;2;LI Ying-jie1;2;LIU Chang-tian1;2;LU Chun-mei1;2

..............page:675-680

A contrastive study on reactivity of brown coal char gasification with steam and CO₂
FAN Dong-mei 1;2;ZHU Zhi-ping 1;NA Yong-jie 1;ZHANG Hai-xia 1;Lü Qing-gang 1

..............page:681-687

Study on additive preparation for gasification CWM by using behaved alkalinity lignin
WANG Guo-fang1;2

..............page:688-693

Influence of vapor heterogeneous condensation on the PM_2.5 particle size distribution
FAN Feng-xian;ZHANG Ming-jun

..............page:694-699

The rubber spring characteristics test of the main vibration spring in horizontal vibrating centrifuge
KAN Xiao-ping;LIANG Jin-gang;DONG Xiao-lei;LIANG Hao

..............page:700-706

Interval Type-Ⅱ fuzzy control on work device of hydraulic excavator
DONG Li-hong1;ZHAO Peng-bing2

..............page:707-714

Effect of antenna location on radiation field distribution in coal mine tunnels
HUO Yu 1;2;LIU Feng-xue 1;2;XU Zhao 1;2

..............page:715-720

mei tan xue bao zheng gao jian ze

..............page:722

zong he xin xi

..............page:534,547,609,667,680,687,693,706,714

Scenario predication for medium-long term scale of coal mine methane drainage in China
YUAN Liang;QIN Yong;CHENG Yuan-ping;MENG Jian-bing;SHEN Jian

..............page:529-534

3D numerical simulation of gas drainage from boreholes based on solid-gas coupling model of coal containing gas
YIN Guang-zhi1;2;LI Ming-hui1;2;LI Sheng-zhou1;2;LI Wen-pu1;2;YAO Jun-wei1;2;ZHANG Qian-gui1;3

..............page:535-541

Electromagnetic wave radiation energy influences on safety of gas in coal mine
PENG Xia

..............page:542-547

Experimental study on resistivity variation regularities of loading coal
CHEN Peng1;2;WANG En-yuan1;2;ZHU Ya-fei1;2

..............page:548-553

Characteristics of jet flow heat transfer in heading face
JI Jian-hu 1;2;3;LIAO Qiang 1;HU Qian-ting 2;3;CHU Zhao-xiang 2;3;ZHANG Xi-jun 2;3

..............page:554-560

Type classification and main characteristics of mine water disasters
WU Qiang1;CUI Fang-peng1;ZHAO Su-qi2;LIU Shou-qiang1;ZENG Yi-fan1;GU Ya-wei1;Beijing 100083;China;2.State Administration of Coal Mine Safety;Beijing 100713;China)

..............page:561-565

Research on the floor heave reasons and supporting measures of deep soft-fractured rock roadway
LIU Quan-sheng1;2;LIU Xue-wei1;HUANG Xing1;LIU Bin1

..............page:566-571

Evolution of surrounding rock in pioneering roadway with very weakly cemented strata through monitoring and analysising
MENG Qing-bin 1;HAN Li-jun 1;QIAO Wei-guo 2;LIN Deng-ge 2;FAN Jia-dong 1

..............page:572-579

Safety rock stratum thickness and reinforced support technology during mining face striding crosscuts
PAN Wei-dong1;2;LIU Jia-dun2;WEI Li-ke1;Beijing 100083;China;2.State Key Laboratory of Coal Resources and Safe Mining;China University of Mining and Technology;Beijing 100083;China)

..............page:580-586

Stability analysis of vertical shaft surrounding rock and supporting system in deep fault fracture
SUN Chuang;ZHANG Xiang-dong;ZHANG Jian-jun

..............page:587-594

Study on performance and microstructure of new type sealing material suitable for freezing hole at weakly cemented soft rock
LIU Juan-hong1;JI Hong-guang1;HE Zhen-ping2;ZHOU Xiao-min1

..............page:595-599

Study on radial loads of mine shaft lining in rock aquifer based on porosity of contact surface
BO Dong-liang1;YANG Wei-hao1;2;YANG Zhi-jiang1;2;HAN Tao2;ZHANG Chi1

..............page:600-603

The effects of impact velocity on energy and size distribution of rock crushing
JIANG Hong-xiang;DU Chang-long;LIU Song-yong

..............page:604-609

Development of test equipment for coupling stress-seepage on concrete adhesive interface
CHEN Xiao-xiang1;DU Ze-sheng2;CHEN Jin-yu3;XU Yi-chang1

..............page:610-616

Influences of branch parameters on productivity of CBM pinnate horizontal well
JIANG Ting-ting 1;YANG Xiu-juan 1;YAN Xiang-zhen 1;DING Yun-hong 2;WANG Xin 2;YANG Heng-lin 3;WANG Tong-tao 1;Qingdao 266580;China;2.Langfang Branch;Research Institute of Petroleum Exploration and Development;Langfang 065007;China;3.Institute of Drilling and Technology;China National Petroleum Corporation;Beijing 100195;China)

..............page:617-623

Rules of coal powder output under physical simulation experiments of single-phase water flow displacement
CAO Dai-yong1;YAO Zheng1;LI Xiao-ming1;2;WEI Ying-chun1;HU Ai-mei3;SONG Bo3;Beijing 100083;China;2.College of Safety Engineering;North China Institute of Science and Technology;Beijing 101601;China;3.Petro China Coalbed Methane Company Limited;Beijing 100028;China)

..............page:624-628