1Influence of Dynamic Change of Slippage Coefficient on CBM MigrationLI Ligong, KANG TianheTest·Research1-62"Vertical Three Zones"Determination of Overburden Based on Tracer Gas MethodZOU YongmingTest·Research7-103Experimental Study on Treatment of Modified Lye with Hydrogen Sulfide in Coal MinesLI Shugang, WANG Ning, ZHANG Chao, FAN Jingdao, DENG Zengshe, ZHANG JingfeiTest·Research11-14,184Research on Coal Seam Permeability Improvement by High-voltage Electric Pulse DischargeMA ShuaiqiTest·Research15-185Determination Method of Drainage Radius of Pre-draining Boreholes Based on Standard Evaluation of Drainage CapacityLIANG WenxuTest·Research19-226Distribution Characteristics and Impact Mechanism of In-situ Stress Field in Fold Tectonic Mining AreaZHAO Yaozhong, ZHANG Ningbo, DENG Zhigang, ZHAO Shankun, CHAI Haitao, LI ShaogangTest·Research23-26,307Adsorption and Desorption Characteristics of CO2 and CH4 for AnthraciteLYU Qianlong, LIU Wei, SONG Yipeng, WU DeyaoTest·Research27-308Experimental Study on Effect of Reducing Mine Pressure by Cutting Roof Strata on Failure Zone Depth of Coal Seam Floor Under Confined AquifersLI Jianbo, HAO Wei, WANG XinmeiTest·Research31-34,389Experimental Study on Influence of Temperature on Isothermal Dehydration of AnthraciteLI PengTest·Research35-3810Overburden Movement Law of Fully Mechanized Top Coal Caving Face in Thick Coal SeamYANG Haobo, TU Zhiling, GAO YonggangTest·Research39-41,4611Influence of Gas Drainage in"U+L"Ventilation Face on Spontaneous Combustion Danger Area in GoafAI XingTest·Research42-4612Experimental Study on Droplet Diameter for PM10 of Mine DustZHANG Jiangshi, YANG XuesongTest·Research47-5013Experimental Study on Mine-used Foam Dust RemoverMENG Qingguo, SUO Cong, SHI Jingwen, LAN Wenlong, LIU Hui, ZHANG DaopengTest·Research51-5514Study on Synthesis and Performance of Compound Powder Coal Dust SuppressantWANG Zhenyu, WANG FeiTest·Research56-5915Calculation of Residual Water Inflow From Water Inrush Point of Coalmine Based on Steady Flow Pumping TestHUANG Jianfei, ZHOU Zhenfang, FENG Jie, LIU Zhaoxing, SHANG Hongbo, WANG ShuyongTest·Research60-6316Field Test of Hydraulic Fracturing and Weakening of Hard Roof to Protect Gob-side RoadwayZHENG Yubin, QIN FeilongTest·Research64-6617Influence of Close Distance Coal Seam Occurrence on Staggered Distance of Simultaneous Mining FaceXU GuoqingTest·Research67-7118Experimental Study on Mixture Ratio of Superfine Cement Slurry with Low ViscosityGUO Dongming, LI Yanyan, ZUO Zhihao, ZHANG Yingshi, MA YoubaoTest·Research72-7719Treatment Technology of Shallow Buried Depth and Close Distance Coal Seam Mining Overlying Small Coal Mines Fire AreaZHANG Liguo, CAO Naifu, GUO HaixiangTechnology·Innovation78-8220Weakening Technology of Hard Coal Seam Based on Improving Coal Cutting EfficiencyLI Jianwei, ZHAO Yajie, BU QingweiTechnology·Innovation83-86,90 