1Study on Ignition Technology of Underground Coal Gasification in LiaoheZHANG Hong, MENG Qing-kun, XIA Yan-dongTest and Research1-42Numerical Simulation of Gas Explosion Overpressure Field in TubeLI Xiao-dong, LIU Qing-ming, BAI Chun-hua, JIANG LiTest and Research5-73Testing Study on Utilizing "Drill Hole Wall" to Prevent Gas Emission in Thick Coal Seam of Inhaling as TunnelingWANG Zhao-feng, FANG Qian-cheng, YANG Li-ping, LI Qing-songTest and Research8-104Study on Mining-Induced Fracture Distribution of Coal and Rock Mass near Protective Layer MinedWANG Yan, WANG Lu-jun, ZHANG Xing-hua, HU Xiao-jiTest and Research11-145Research on Distributed Measurement System for Mine Main Fan PerformanceHE Xin-jian, JIANG Shu-guang, WU Zheng-yan, WANG Lan-yun, SHAO Hao, QIN Jun-huiTest and Research15-17,216Study on Relationship between Ventilation Parameters and Methane Delivery in Coal MineXIE Dong-hai, FENG Tao, LI Run-qiuTest and Research18-217Study on Strata Behavior Regularity of Fully Mechanized Coal face for Deeply Inclined Coal sSeamLIU Qiug-lin, MENG Xiang-rui, ZHAO Guang-ming, ZHAO Qi-fengTest and Research22-248Development of Intrinsically- safe Explosion- proof Phone CouplerZHANG Min, TANG Chong, PAN Ai-xianTest and Research25-27