1Evaluation of composite water disaster and comprehensive water prevention and control countermeasures in No.24901 working face of Zhangshuanglou Coal MineSONG Zheng-yu, SUN Yan-chen, XIAO Qing, CHEN Tian-ci, LI Nan-jun, XU Zhi-minQuestion Discussion1-82Characteristics of heavy metal pollution in soil and wheat of agricultural land around gangue hills of closed pit coal mineJU Qian, MA Rong, LIU Wei, WANG Yan-jun, ZHAGN Mei, HE Jian-guoQuestion Discussion9-143Analysis of coal seam and coal accumulating environment analysis in Bayintaolegai exploration area,Dongsheng CoalfieldZU Xin-xu, CHEN Qian-qian, LI Feng, LIU Ming-mingQuestion Discussion15-18,264Review on mechanical response of anchored fractured rock mass under freeze-thaw actionZHANG Xin-zhou, LI Cong, WU Liang-liang, XIE Tian, ZHAO Kai-yi, CAI Wei-zhen, ZHANG Rong-tangQuestion Discussion19-265Study on width of yield interval coal pillar during final mining of fully-mechanized mining faceZHANG Jun, ZHU You-hengQuestion Discussion27-316Optimization design of layered mining under extra thick coal seam in No.2502 mining area of Yanbei Coal MineGONG Zhong-louQuestion Discussion32-35,407Study on mine pressure behavior law of intelligent working face with large mining heightFANG Ping, CHEN Jian-chong, LIU Zhi-gang, SUN Yan-ning, ZHU De-he, XU Liang-keQuestion Discussion36-408Efficient drilling technology of directional drilling for interbedded sections of limestone and mudstone underground mineDONG Hai-chao, SUN YangQuestion Discussion41-449Experimental study on relationship between hydraulic head pressure and voltage in electro-osmotic technologySI Xiang, WANG Dang-liang, LIU Ke-rui, YANG Dao-kun, JIAO Jian-ruiExperimental Study45-4910Dynamic stress distribution and energy evolution characteristics of deep roadway surrounding rock under dynamic loadsSUN Hai-yu, HUANG Wei-hong, FAN Dong-fangExperimental Study50-57,6311Study on failure mechanism and supporting parameters of coal-rock roadway in deep wellYUAN Yi-pingExperimental Study58-6312Research on failure characteristics and supporting technology of surrounding rock in gob-side entry driving of close-distance underlying coal seamZHAO Hong-zhi, MA Qi-wei, ZHAO Yi-mingExperimental Study64-69,7713Research on failure mechanism and control technology of surrounding rock in mining roadwayXING Yun-fengExperimental Study70-7714Research and application of multifunctional operation vehicle in roadway of Xinglongzhuang Coal MineZHOU Feng, TIAN Sheng-li, DING Lin-song, SU Li-tang, XU Guo-dong, JIANG Kuo-feng, HAN Xin, WU Lin-linExperimental Study78-8115Research on bearing capacity of mining W-shaped steel beltPANG Wei-feng, YANG Dong, LIANG Xiao-wei, MA Jia-huiExperimental Study86-8816Determination of index gas of coal spontaneous combustion prediction and analysis of CO sources in working facesWANG Zheng-shuaiCoal Safety89-9317Research on N2 migration law in goaf of large inclined coal seamLI Wen-tao, ZHAO Xiao-gang, DONG Hao-fu, ZHANG Wei, LIU Dong-liang, SHI Bo-bo, SONG Xiao-linCoal Safety94-97,10418Gas control technology and application of"replacing roadways with holes"in complex coal and rock layers of Liangbei Coal MineAI Zi-chuang, DU Chen-jun, WANG Yu-haoCoal Safety98-10419Distribution characteristics of"three-zone"in Bofang Coal Mine goaf and its application in high and long drilling extractionGUO Ze-ming, HE Shou-peng, AN KangCoal Safety105-11020Study on gas extraction radius of main coal seam in No.8 well of Sikeshu mining areaZHANG Kang, YANG Zhou, WANG Zheng-shuaiCoal Safety111-114,119 