1Factor Analysis on Deformation of Gob-Side Entry Retaining with Entry-In Packing in Top-Coal Caving Mining FaceZHANG Dong-sheng, MA Li-qiang, MIAO Xie-xing, DONG Guo-wei1-62Critical Ventilation Speed Between Platform and Concourse at Subway StationGU Zheng-hong, CHENG Yuan-ping, ZHOU Shi-ning7-103Nitrogen Fixation of Three-Phase Foam and Its Inerting PropertiesZHOU Fu-bao, WANG De-ming, ZHANG Yu-liang, LI Xiang11-144Distribution of Twelve Toxic Trace Elements in Coals from Southwest ChinaLI Da-hua, TANG Yue-gang, CHEN Kun, DENG Tao, CHENG Fang-ping, LIU Dong15-205Material Decision and Elevation Design of Coal Waste Filling Reclamation in Mining AreasCHEN Long-qian, HU Zhao-ling, WANG Hui, BIE Zhi, HAN Ke-qi21-246Experiment Research on Underground Coal Gasification of Xiyang AnthraciteLIANG Jie, ZHANG Yan-chun, WEI Chuan-yu, FENG Yin-Hui25-28,347Research on the Volatility of Lead During Sub-critical Water Treatment of CoalWANG Bao-feng, LI Wen, LI Bao-qing, CHEN Hao-kan, WANG Gang29-348Analysis of Mixed Inflammable Gases with Catalytic SensorTONG Min-ming, ZHANG Yu, Dai Xin-lian35-389Influence of Wall Roughness on Flame Transmission of Gas ExplosionZHAI Cheng, LIN Bai-quan, JIAN Cong-guang, LI Chao39-4310Research on Detecting Technique for Inferior Strata CombinationJIA Ming-kui44-4811Numerical Simulation on Dynamic Variation of the Permeability of High Rank Coal Reservoirs during Gas RecoveryCHEN Jin-gang, QIN Yong, FU Xue-hai49-5312Analysis of Safety Supervision Effect on Coal Mine Using Game TheoryZHOU Min, XIAO Zhong-hai54-6013Carbon Tetrachloride Pollution Pathway of A Karst Groundwater Supply SourceHAN Bao-ping, ZHU Xue-qiang, SUN Xiao-fei, WANG Xiao-ying61-6514Study of the Tribological Behaviors of Nylon 1010 Filled with Glass PowdersLIU Li-guo, GE Shi-rong, HAN Dong-tai, WANG Qing-liang, ZHU Hua66-6915Fractal Effects on Subcritical Crack Growth of ConcreteDUAN Qing-quan, LIU Cai-ping, JU Yang, XIE He-ping70-7416Rheologic Characteristics Experiment of Coal SlurryZHAO Xue-yi, FU Jian-zhuo, CUI Yu-jiang, WU Miao75-7817Restraint of the Common Mode Voltage in Matrix Converter-Permanent Magnetic Synchronous Machine SystemGE Hong-juan, ZHANG Shao, MU Xin-hua, ZHOU Bo79-8318Accumulation and Identification of Heavy Metals in Xuzhou Urban TopsoilWANG Xue-song, QIN Yong84-8819Fractal Character of Over-Excavation of Tunnel Surrounding RockSU Yong-hua, SUN Xiao-ming, ZHAO Ming-hua89-9320Spot Testing on Mechanical Characteristics of Surrounding Rock in Gates of Fully Mechanized Top-Coal Caving FaceXIE Guang-xiang, YANG Ke, CHANG Ju-cai94-98 