1Combination characteristics of unconventional gas in coal measure in the west margin of Ordos BasinCAO Dai-yong, LIU Kang, LIU Jin-cheng, XU Hao, LI Jing, QIN Guo-hong277-2852Control effect of plate tectonics on coal measures in northern Qinghai-Tibet PlateauTAN Jie-qing, MA Zhi-kai, GAO Ke-fei, SONG Shi-yu, CAO Dai-yong286-2933Characteristics of coal resources and their geological background at Northern Qinghai Tibet PlateauQIAO Jun-wei, LI Cong-cong, FAN Qi, TAN Jie-qing, XIE Tao, YANG Cheng, L(U) Jun-e294-3024Metal mineral types and distribution characteristics in coal in Northern ChinaZHU Hua-xiong, CHEN Han-yong, ZHANG Wei, NING Shu-zheng, HAN Liang303-3095Distribution characteristics of trace elements in coal of Inner Mongolia Baiyinhua coalfieldZHANG Jian-qiang, ZHANG Heng-li, DU Jin-long, HUO Chao, PAN Hai-yang, DING Lian310-3156Evaluation of Al, Ga resources in coal measures based on AHP-GCA methodNING Shu-zheng, HAN Liang, ZHU Shi-fei, ZHANG Wei, ZHU Hua-xiong, CHEN Han-yong, QIN Guo-hong316-3237Experiment on swelling strain of confined coal mass with CO2 sequestrationZHANG Bei-ning, LIANG Wei-guo, HAN Jun-jie, LI Zhi-gang324-3318Seismic weak signal identification and noise elimination based on curvelet domainJIN Dan, CHENG Jian-yuan, WANG Bao-li, ZHANG Xian-xu, SUN Yong-liang332-3379Water inrush control and restoration of shaft construction in cretaceous aquifer338-34410Laboratory grouting experiment based CT analysis of grouted soft rocks in deep minesYANG Ren-shu, XUE Hua-jun, GUO Dong-ming, HE Tian-yu, LI Tao-tao, ZHAO Peng-fei, ZHANG Yan-qiu345-35111Theoretical model of drawing body in LTCC miningWANG Jia-chen, SONG Zheng-yang, ZHANG Jin-wang, CHEN Yi352-35812Analysis on the top-coal caving structure of extra-thick hard coalseam with shallow depth in fully mechanized sublevel caving miningXIE Xing-zhi, ZHAO Tie-lin359-36613Evolution of the superimposed mining induced stress-fissure field under extracting of close distance coal seam groupCHENG Zhi-heng, QI Qing-xin, LI Hong-yan, ZHANG Lang, LIU Xiao-gang367-37514Adaptability theory of roadside support in gob-side entry retaining and its supporting designTAN Yun-liang, YU Feng-hai, NING Jian-guo, ZHAO Tong-bin376-38215Continuous curved beam formation and strata control theory in coal backfill miningLIU Jian-gong, ZHAO Jia-wei, LI Meng-meng, ZUO Jian-ping383-39116Analysis on the strength increase law of filling material based on response surface methodLI Dian, FENG Guo-rui, GUO Yu-xia, QI Ting-ye, JIA Xue-qiang, FENG Jia-rui, LI Zhen392-39817Dimensionless analysis of gas emission in coal particles based on finite volume methodQIN Yue-ping, WANG Jian399-40518Experimental study on overburden strata fracture evolution law in three dimensional mine-induced stress conditionsYIN Guang-zhi, LI Xing, HAN Pei-bo, LI Ming-hui, LI Wen-pu, DENG Bo-zhi406-41319Experimental study on the influence of drainage borehole position on dynamic parameters of coal seam in CBM recovery processWANG Wei-zhong, LIU Dong, XU Jiang, TAO Yun-qi, PENG Shou-jian, LIU Long-rong414-42320Investigation on fracture mechanism of coal rock on three-point bending tests under different gas pressuresYIN Zhi-qiang, XIE Guang-xiang, HU Zu-xiang, ZHU Chuan-qi424-431 