1Study on Types of Tectonic Coal from Xutuan Coal Mine in Huaibei Coalfield and Its Pore CharacteristicsTest·Research1-42Study on Seepage Laws in Coal Bed Methane Mining Through Injecting Thermal in Low Permeability Coal SeamWANG LudiTest·Research5-83Experimental Study on Hydraulic Fracturing Technology in Outburst Coal Seam with Low Permeability in Yutianbao MineYUAN Guangming, CHEN Yutao, TIAN Weidong, HUANG WenxiangTest·Research9-124Study on Erosion Capability of Gas-liquid Two-phase JetWEI Sixiang, YANG Wei, QIAO ShiheTest·Research13-15,195Influence of Ignition Energy on Explosion Behavior of Pulverized CoalCUI Rui, CHENG WuyiTest·Research16-196Simulation Study on Flow Field and Particle Trajectory of Vortex Condensation RegionZHANG Jiangshi, ZHU Wen, WU Longgang, LYU Ganggang, MA ShuangTest·Research20-237Thermogravimetric-infrared Experimental Research on Coal Spontaneous Combustion Under the Condition of Lean OxygenDENG Jun, YANG Junyi, ZHANG Yutao, LI YaqingTest·Research24-288Experimental Study on Laws of Fault Activation Induced by MiningZHU Yanqiu, YANG LiTest·Research29-31,359Experiment Research on Gas Permeability of Soft Tectonic Coal Under the Condition of Negative Pressure ExtractionLI Xinglong, CUI XuefengTest·Research32-3510Experimental Study on Spontaneous Cooling Process of CoalTest·Research36-3911Numerical Simulation of Spreading Laws of Coal Mine Belt Conveyer FireWANG Weifeng, MA Li, WANG Liubing, ZHANG LirongTest·Research40-4312Numerical Analysis of Underground Flue Effect on Mine Roadway FireZHANG Xinhai, DING Feng, ZHANG Yutao, WAN Xu, MIAO YuhuiTest·Research48-5113Influence of Mining Degree on Surface Subsidence Characteristics Under the Condition of Mining Thick Unconsolidated LayersYANG Junwei, HOU DefengTest·Research52-54,5814Research on Detonator Millisecond Delay Time Recognition in Coal Mine Freezing Vertical Shaft BlastingFU Xiaoqiang, YANG Liyun, CHEN Cheng, CHEN Shuaizhi, CHEN QifanTest·Research55-5815Micro Seismic Monitoring Research on Roof Fracture at the First Fully Mechanized Mining Face in Special Thick Coal Seam Under GoafDENG Weiyuan, KANG TianheTest·Research59-6216Prediction of Pressure Relief Gas Distribution and Extraction Technology for Lower Protective Seam MiningGUO Jing, SUO RuoqiTechnology·Innovation63-66,7017Fast Outburst Elimination Technology by High-pressure Water Jet Cross-cut Coal Uncovering in Xin'an Coal Field and Its ApplicationZHANG Xule, LU JianshouTechnology·Innovation67-7018Rapid Outburst Elimination Technology for Closed Distance Coal and Rock Roadways Going Forward One by OneSU Weiwei, WANG ChunguangTechnology·Innovation71-74,7819Fire Prevention Technology at 12205 Working Face of Selian No.2 Coal Mine in Finished PeriodWEN Hu, HU Wei, LIU Wenyong, ZHANG Ze, CHENG ShuangliTechnology·Innovation75-7820Application of Coal Detection Technology in Close Coal Seam Rock Drift Heading FaceJIA XiaoliangTechnology·Innovation79-82 