1Fracture mechanical model of key roof for fully-mechanized top-coal caving in shallow thick coalseamCHEN Zhong-hui, FENG Jing-jing, XIAO Cai-cai, LI Rui-hua449-4522Mechanical mechanism analysis of water inrush condition on mechanized top-coal caving in steep seam in Zhaogezhuang coal mineLI Jian-min, ZHU Bin, WU Qiang453-4573Research of isolated section-grouting technology for overburden bed separation space to reduce subsidenceZHU Wei-bing, XU Jia-lin, LAI Wen-qi, WANG Zhi-gang458-4624Study on the rock damage characteristics based on the technique of CT image processingYANG Geng-she, LIU Hui463-4685Comprehensive treatment of the surface water system in subsidence area of coal mineXU Liang-ji, YAN Jia-ping469-4726Automatic monitor system of slope stabilityLIU Xiao-sheng, ZHANG Xue-zhuang, WANG Ai-gong473-4767The open-pit truck dispatching method based on the completion of production target and the truck flow saturationXING Jun, SUN Xiao-yu477-4808Study of the land use and class method based on remote sensing imageZHOU Xing-dong, YU Sheng-wen, ZHAO Chang-sheng, WANG Zhi-yong481-4849The sequence stratigraphy of the Middle Jurassic coal measures in the Laogaoquan region of the northern Qaidam basinHUANG Man, SHAO Long-yi, LU Jing, LIU Tian-ji, WANG Hao, WEN Huai-jun, JU Qi485-48910Numerical simulation of control of fold structures on mining subsidenceSUN Xue-yang, XIA Yu-cheng, BAI Hong-mei490-49311Numerical simulation of three level seepage of coalbed methane on flame coal reservoirs in Tiefa basinFU Xue-hai, PENG Jin-ning494-49812Numerical simulation of improving permeability by deep-hole presplitting explosion in loose-soft and low permeability coal seamCAI Feng, LIU Ze-gong, ZHANG Chao-ju, LIN Bai-quan499-50313Different-source gas emission prediction model of working face based on BP artificial neural network and its applicationZHU Hong-qing, CHANG Wen-jie, ZHANG Bin504-50814Effect of semi-spherical shaped grate obstruction on pressure wave of flammable vapor cloud deflagrationCONG Li-xin, BI Ming-shu, XIAO Chuan-bing509-51215Study on characteristics of the maximum allowable oxygen content of common industrial flammable gases (liquids)ZHANG Zeng-liang, LI Gemei513-51616Numerical simulation on aggregation dynamics of coal-fired PM10 by magnetic seedingLI Yong-wang, ZHAO Chang-sui, WU Xin, LU Duan-feng, HAN Song517-52117Research on dynamic characteristics of residue granularity in coal water slurry suspension combustionJI Deng-gao, ZHANG Li-juan, WANG Zu-ne, FU Xiao-heng522-52518The gasifying comparison between the multi-nozzle opposition gasifier and a new coal water slurry gasifierYU Hai-long, LIU Jian-zhong, ZHANG Chao, CEN Ke-fa526-53019The mechanism of oscillating flotation to improve selectivityCHENG Hong-zhi, LU Mai-xi, SHI Huan, ZHANG Xiao-jun, SHI Ying-xiang531-53420The depression characteristics of polymers of ferric-polysilicate on coal-pyrite during flotationYANG Hong-li, FAN Min-qiang535-538 