1Discussion on 110&N00 method and development conception of underground coal miningZHAO Yu-dong1-52Analysis on stress disturbance of initial caving to stope in fully-mechanized top coal caving faceTANG Yu6-83Research and analysis of top coal caving in 110501 working face of Yushutian Coal MineGUO Yan, WU Zhao-peng9-124Effect of particle size distribution of 420 powder on bulk densityZHANG Ke13-14,295Failure reason and control technology of super front section in fully-mechanized working faceYANG Chun-yu15-176Influence of water-grey ratio on pressure strength and permeability of borehole-support foam concreteWANG Ning, LIU Chang-lai, WU Jie18-217Research on Flexible Airbag Anti-collapse Support Device for Drilling Drilling in Soft Coal SeamZHOU Jian-wei, FAN Fu-huai, HUANG Xiao-sheng22-25,388Study on energy saving optimization system of belt conveyorZHANG Ming-wei, ZHAI Wen-chao26-299Effects of vacuum atomized CuCrZr powder smelting process on powder preparation in additive manufacturingTANG Yue-yue, YE Guo-chen, Wei Fang, ZHANG Ke30-3410Influence of feeding speed of die steel powderon vibrating screenWEI Fang, YE Guo-chen, TANG Yue-yue, ZHANG Ke35-3811Study on strength characteristics of new alkali activated material solidified iron tailingsLI Chun-miao, LI Min, MEI Jun39-40,5112Design and practice of fire control scheme for A3015 working face in Saier No.6 Coal MineKANG Cong-yong, SHAN Xin-xin41-4413Study on distribution characteristics and control technology of"Three Zones"of spontaneous combustion in goaf of 1308 fully-mechanized caving face in Guojiahe Coal Mine and its applicationYANG Jian-kun45-4814Analysis on double prevention mechanism of coal mineLI Yang49-5115Study and application of prevention and control measures of gas extraction in fully-mechanized working faceCHEN Jian-yong, ZHOU Da-wei52-5516Research and application of advance supporting of entry along gob in 71coal seam of Qidong Coal MineMA Chuan-yue, HUI Xin-dong, XU Ai-min56-59,6717Technology of floor supporting and passing through middle connecting roadway in fully-mechanized working face with unstable surrounding rockZHAO Rong-kuo60-6218Research and application of supporting technology for coal winning roadway in large dip island coal faceWAN Wei63-6719Analysis of stress characteristics of bolt and cable and its application in 11-1042 roadway of Sanjiaohe Coal MineLI Jiong-chen68-7120Research and application of visualized real time monitoring and wireless communication system for endless rope winchSUN Jin-dong, ZHOU De-tao, ZHOU Zhi-xuan72-73 