1Causes and prevention of powered support jammed in fully-mechanized top coal caving mining face in ultra thick seam with watery roofXu GangMining and Underground Engineering1-52Surface movement law of underground wide strip mining under super thick loess layer and parameter optimizationYu Xueyi, Guo Wenbin, Zhao Bingchao, Liu ZhangrongMining and Underground Engineering6-103Roof falling control technology of conveyor tail in fully-mechanized ultra high cutting coal mining faceFeng XiaobinMining and Underground Engineering17-214Inspection and application of blasting and pressure released technology to mine pressure bump prevention and controlGu Helong, Nan Hua, Wang Wen, Xu Chengchuan, Lin DongMining and Underground Engineering22-265Analysis on roadside control technology of gob-side entry retaining and applicable conditionsCao Shugang, Chen Xianzhe, Yang Hongyun, Wang Shuai, Zou DejunMining and Underground Engineering27-336Coal wall spalling mechanism and prevention technology of unstable seam with soft roof, soft coal and soft floorHan Hongqiang, Wang Zhenjiang, Guo BingbingMining and Underground Engineering34-387Study on instability mechanism and control technology of mine roadway in continued breaking regionWei Sijiang, Nan Hua, Xu YaohuiMining and Underground Engineering39-448Experiment study on gas absorption effect promoted by temperature reducing of coal massYue Gaowei, Wang Zhaofeng, Xie Ce, Li XiaojunSafety Technology and Engineering45-499Study and application of guide slot directional hydraulic pressurized penetration and permeability improved technologyLi YanzengSafety Technology and Engineering50-5410Study on drilling technique of high level directional long boreholeYan BaoyongSafety Technology and Engineering55-5811Optimized design and application of three dimensional gas drainage boreholes in driving faceLi YunSafety Technology and Engineering59-6312Study on porous structure difference of soft coal and hard coal based on mercury intrusion methodGu Yifan, Wang Zhaofeng, Qi LinglingSafety Technology and Engineering64-6713Advanced control method and theoretical analysis on reversed airflow of mine main shaft in winterNie Baisheng, Guo Jianhua, Zhao Bi, Wang Chunliang, Li MogengSafety Technology and Engineering68-7214Study on coupling simulation of gas and coal spontaneous combustion in high gassy and easy spontaneous combustion goafPei Xiaodong, Zhang Renwei, Ma WeinanSafety Technology and Engineering73-7715Relationship between oxidized spontaneous combustion zone and nitrogen injection quantity in goaf of fully-mechanized top coal caving mining faceMa Dong, Qin BotaoSafety Technology and Engineering78-8216Study on manufacturing technology of hydraulic powered supportCao Lianmin, Sun Yunlu, Pang Bin, Han Songsong, Liu BingMachinery Electric and Automatization83-8817Study on cutting trace planning of longitudinal roadheader and boundary control methodWang Suyu, Tian Jie, Wu MiaoMachinery Electric and Automatization89-94,11818Experimental study on shearer positioning method based on SINS and EncoderLi Ang, Hao Shangqing, Wang Shibo, Ge Zhaoliang, Ge ShirongMachinery Electric and Automatization95-10019Changeful load feature analysis of supports in longwall and large mining height fully-mechanized face of steeply dipping seamXie Panshi, Wu Yongping, Zhang Hao, Liu Zikai, Wang HongweiMachinery Electric and Automatization101-10520Study on drilling depth detection technology of underground coal mineGao JunMachinery Electric and Automatization106-109 