1Response of Porosity and Permeability of Powder Structural Coal on FreezeCHU Xiaosong, QU Zhenghui, YU Kun, YU Kelong, SHAO ChunjingTest·Research1-52Stability Analysis of Sealing Section in Gas Extraction Hole Based on Strain Softening ModelWANG Zhiming, WANG Yonglong, LIU Chun, XIA TongqiangTest·Research6-103Experimental Study on Cementing Materials Ratio of Briquette Coal Using in Coal and Gas Outburst SimulationYU Dayang, TANG Yibo, WANG Junfeng, ZHANG Xiyou, ZHAO ChunruiTest·Research11-14,194Gas Seepage-stress-damage Coupling Model in Mining Coal and RockLIU Li, LI Shugang, XU GangTest·Research15-195Experimental Study on Influence of Multi-factor on Expansion Energy of Initial Released GasJIANG Chenglin, ZHANG Qiang, TANG Jun, SHEN PengTest·Research20-226Apparent Resistivity Response Features Analysis of Hydraulic Fracturing in Highly Bursting Coal SeamPENG Yesheng, SONG Dazhao, GAO QinqiongTest·Research23-267Study on Logging Recognition for Coal Seam Surrounding Rock Oil and Gas in Huangling Coal Mining AreaTANG Enxian, DU Tianlin, LI Chuan, MA Gongshe, ZHAO JizhanTest·Research27-29,348A Research Method for Coal and Rock Permeability Based on Lattice Boltzmann MethodZHAO Zhigang, ZHANG Yongbo, ZHAO Tongbin, TAN YunliangTest·Research30-349Numerical Simulation and Measurement Research on Isolated Goaf Gas Drainage EffectLI Chuanheng, HE Qilin, LI Tongsuo, PAN XuTest·Research35-3810Migration Law and Controlling Measures for Toxic and Harmful Gas After Underground BlastingHU Yang, KANG Huaiyu, ZHU Jianfang, CHEN ShaojieTest·Research39-4211Study and Strength Analysis of Screen Pipe for Gas Drainage Borehole Completion in Underground Coal MinesWANG LiTest·Research43-47,5112Judgment of Combustion State in Coalfield Outcrop Fire AreaWANG Wencai, ZHANG Pei, WANG Xinzhou, ZHAO Jingwen, LIANG Boshuai, ZHANG GenyuanTest·Research48-5113Optimization of High Pressure Spray Nozzles Based on Multi-index Orthogonal ExperimentYANG Junlei, ZHUANG Xue'anTest·Research52-5514Experimental Study on Dust Distribution Laws of Advancing Support at Fully Mechanized Caving Faces Under Different Influencing FactorsWANG Ming, JIANG Zhong'an, CHEN JushiTest·Research56-5915Experiment of Processing Parameters for Loose Top-coal Under Caving Mining TechniqueCUI Jingkun, LI Haijiang, LI Xuning, LI Zhenyu, LI Mo, GU KeleiTest·Research60-62,6716Effects of Particle Size for Anthracite Nitrogen Adsorption TestGUO Weikun, QU Zhenghui, YU Kun, YU Kelong, SHAO ChunjingTest·Research63-6717Study on Layout of Roadway Position Under Island Coal PillarCHEN Feng, ZHANG Ming, LU YubingTest·Research68-71,7518Study on Ejection and Breaking Mechanism of Anchor Cable and Protection SchemesZHENG Hebin, ZHANG Zhaoqian, GU KaiTest·Research72-7519Analysis and Research of Three Degrees of Freedom Double Parallel Hydraulic SupportWANG Chengjun, HU Song, LIU Kai, CHEN Jinyan, HUANG RuhangTest·Research76-7920Analysis and Control Technology of Hydrogen Sulfide Emission in Steeply Inclined Thick Coal SeamZHANG Ge, LIU Kui, SUN Bingcheng, GUO ShengjunTechnology·Innovation80-84 