1Study on the influence of injection pressure variation caused by flow on hydraulic fracturing effectLIU Le, HU Qianting, LI Quangui, JIANG Zhizhong, WU Xiaobin, SONG MingyangTest Research1-5,112Study on optimization of water-cement ratio of the cement grout for sealing boreholes in gas drainageWEI LeTest Research6-113Study on gas-water two-phase flow coupling model and gas drainage simulationYU Bo, BI Huijie, DENG Zhigang, ZHANG Kun, SU Zhenguo, MA BinwenTest Research12-164Temporal and spatial distribution characteristics and key influencing factors of gas emission in coal seam with low gas content by high intensity miningGONG Xuanping, CHEN Long, CHEN Shanwen, BAI Tinghai, LIN Haifei, GAO Han, CHENG XiaoyuTest Research17-23,285Study on reinforcement technology of roadway under mining condition of medium and short distance underlying working faceYANG YonggangTest Research24-286Simulation study on stress characteristics of roof surrounding rock in fully mechanized working faceHAO Xue, HU Zuxiang, XING Lifen, XU XiaobenTest Research29-33,387Study on optimization of resistance reducing agent for hydraulic permeability increasing in underground coal mineXIONG Wei, PENG Minghui, BA QuanbinTest Research34-388Research on mine microseismic signal recognition based on empirical wavelet transformWU Yiwen, CHENG Tiedong, YI Qiwen, ZHAO KuiTest Research39-449Numerical simulation of the impact risk in stope under different fault slopeSHENG Kaihua, WANG Lu, LIU Yanqing, LI Zhihong, ZHANG ZhenyangTest Research45-50,5610Early warning technology of coal and gas outburst based on big dataNING XiaoliangApplication Techniques51-5611Research and application of technological parameters of ultra-high pressure water jet slotting in deep outburst coal seamLI Shengzhou, QIAO Wei, WANG JianApplication Techniques57-6112Research on the application of hydraulic pressure relived and permeability enhanced technology in cross-cut rapid uncovering coalFENG KangwuApplication Techniques62-6513Limit parameter changes and hazardous area determination of residual coal spontaneous combustion in compound goafZHANG FeiApplication Techniques66-7214Multi-parameter monitoring and early warning system of rock burst under "two hard" conditionLI Lili, WANG NingApplication Techniques73-7615Influence of surface mountain load on mining pressure of shallow buried deep working faceREN YanfangTechnical Experience77-81,8716Research on fracturing treatment technology of concentrated stress disaster by the overlying coal pillar in close distance shallow seamYANG Junzhe, ZHENG Kaige, ZHAO Jizhan, LI Yanjun, DAI Nan, YANG HuanTechnical Experience82-8717Deformation mechanism and control technology of the external dislocation roadway under the close distance coal seamXU JunjianTechnical Experience88-9218Research on the hole bottom installation method of acoustic emission monitoring sensor for coal and rock dynamic disasters in mineLI JiangongTechnical Experience93-96,10219Prevention measures and mechanism of water inrush in south wing roadway of Beixinyao Coal MineLU Xi, HE Yadong, WANG MinTechnical Experience97-10220Response characteristics of transient electromagnetic in advance detection of goaf waterYUAN Yongbang, YI Hongchun, XIAN PenghuiTechnical Experience103-106,111 