1Fundamental concepts and mechanical analysis of water-resisting key strata in water-preserved miningMIAO Xie-xing, CHEN Rong-hua, BAI Hai-bo561-5642Existing problem on longwall remaining coal pillars support miningLIU Yang, SHI Ping-wu565-5693The changes of mechanical properties of sandstone in deep in-situ stress fieldHAN Song, CAI Mei-feng570-5724The loss of stability and supporting method for the soft and dynamic tunnelsZENG Fan-yu573-5765Mechanism on the failure and caving of roof strata in pillar and house miningMENG Da, WANG Jia-chen, WANG Jin-xue577-5806Modification of calculation method for the load of mining-induced strataJIANG Bin-song, ZHANG Qiang, HAN Li-jun581-5857Cause analysis of Hujiagou coal wastes landslide in Nantong mining district of Wansheng,ChongqingDONG Qian, LIU Dong-yan, ZHU Zheng-wei, SUN Hai-tao586-5918Regional forecast of coal and gas burst based on fuzzy pattern recognitionZHANG Zi-xu, LIU Gao-feng, L(U) Run-sheng, ZHANG Jun592-5959Testing study on the law of anthracite's impacting dust particle-size distribution596-59910Study of intelligent gas discharging system based on switch resistance motorHUO Hong-yi, LI Lei-jun600-60311Study on influence factors of dust concentration measuredWANG Zi-liang, ZHAO En-biao, L(U) Yin-zhuang, GUO Sheng-jun604-60712Application of new fireproofing and dust-depressorSHI Chun-hong, JIN Long-zhe, LIU Jie-you608-61113Comprehensive evaluation model for the safety of fully mechanized mining face based on unascertained measure and AHMLI Wan-qing, MA Li-hua, MENG Wen-qing612-61614Research of improving slurrying property of Shenhua coal by microwave pre-heatingZHOU Jun-hu, LI Yan-chang, CHENG Jun, LI Shan-shan, ZHAO Xiao-hui, LIU Jian-zhong, CEN Ke-fa617-62115Alkali-fly ash preventing technic on sulfur pollution of coal wastesBI Yin-li, SU Gao-hua, GUO Jing-ting, LIU Yin-ping622-62516Study on variation of micro-pores(＜100 nm) and volatile components of different rank coals during carbonizationSHEN Jun, WANG Zhi-zhong626-62917The clean coal technology model and its applicationYANG Li, CHEN Gui-feng630-63318Selection of several degradation lignin funguns and the experimental study of their coopporation to biodegradation of coalZHANG Ming-xu, WANG Long-gui, OU Ze-shen, SHEN Guo-juan634-63819Study on the technology of decreasing ash and sulfur in coking coal concentrate by deep-cleaningLI An, LI Ping, CHEN Song-mei639-64220Rheological behavior in Xinglongzhuang coal washery sludge pump system of CFB boilerTANG Xiao-ming, YANG Jia-lin, JIANG Xu-guang, CHI Yong, YAN Jian-hua643-646 