1Study on Microscopic Pore Structures of Coal Based on Nuclear Magnetic Resonance TechnologyXU Xiaomeng, MA Hongxing, TIAN Jianwei, WANG Jiajian, LI GuangyaoTest·Research1-42Analysis and Field Experimental Research on Water Jet Slotting DepthHUANG Zhenfei, ZHAO Xusheng, DAI Linchao, YANG HuimingTest·Research5-83Numerical Simulation of Underground Coal Seam Gas Pressure Measurement by Direct MethodZHAO Rong, QI Liming, WANG Wei, ZHANG Kai, ZHANG XukunTest·Research9-124Experiment on Advanced Mining-included Pressure Relief Gas Extraction of Current Seam in Wuyang Coal MineWU Renlun, WANG Jilin, CHENG Hui, SHE Zhilong, WANG Yafei, ZHANG Fanbo, WANG DongzeTest·Research13-165Experimental Study on Acoustic Emission Monitoring Technique and Pre-warning of Stress Type Outburst Disasters in Deep MineYANG HuimingTest·Research17-20,256Research on Pore Structure of Coal with Low PermeabilityGU Yifan, WANG Zhaofeng, QI LinglingTest·Research21-257Study on Influence of Low Concentration Gas on Lower Explosive Limit of Coal DustWANG ZhepengTest·Research26-27,328Optimization of Coal Grouting Materials and Uniaxial Compression Test of Reinforced CoalTest·Research28-329Parameters Optimization of Negative Pressure Suction Type Atomization Device and Dust Fall Experiment StudyLIU Bo, LIU QiuzuTest·Research33-35,3910Simulation Study on Diffusion Area of Gaseous Pollutants Released from Coalfield FireZHOU Hongwen, ZHAO FeiTest·Research36-3911Experiment Research on Remaining Coal Spontaneous Combustion in Wangwa No.2 Mine Higher SliceTest·Research40-4312Experiment Research on Dust-reducing Effect by Adhesive-type Dust Isolation CurtainZHANG Jiangshi, MA Shuang, LYU Ganggang, ZHU Wen, DU YanfeiTest·Research44-4713Industrial Contrast Test of Deep Hole Pre-splitting Blasting Technology and Hydraulic Fracturing TechnologyHU Bin, LIANG Xiaoxing, WANG Youfa, WEI Wenzhong, WU XiaoweiTest·Research48-5114Similarity Simulation of Water-inrush from Reverse Fault Roof Under Mining EffectHU Tao, ZHAO DeshenTest·Research52-5515Distribution Laws of Temperature Field in Mine Surrounding RockCHEN Liu, HAN FeiTest·Research56-59,6416Study on Bifurcated Angle Effect of Surrounding Rock Deformation Law of Large-section Hard Rock Bifurcation RoadwayZHAO Qingmin, SHI Xianyuan, CHANG QingliangTest·Research60-6417Study on Lateral Stability of Hydraulic Support at Large Inclined Angle Working FaceCAO Lianmin, DAI Qingyun, ZHANG Dan, YU Yongna, WANG Zhongtao, SUN YunluTest·Research65-6818Study on the Maximum Safety Gap for Flame Arresters of Explosion-proof Diesel EngineWANG RuilongTest·Research69-71,7519Research on Pipe Flow Resistance Loss of High Concentration Filling Materials in Coal MineYU YUE, ZHENG Weiyu, CHENG Kun, JIANG BinTest·Research72-7520Frequency Spectrum Characteristics of Blasting Seismic Wave Attenuation Laws in Surface Coal MineGAO Fuqiang, ZHANG Guangxiong, YANG JunTest·Research76-78,82 