1Experimental Study on Influence of Gas Pressure on Adsorption Characteristics and Structure of CoalXU Youlin, WU XukunTest·Research1-4,92Fractures and Permeability Improvement Law of Liquid CO2 Considering Direction Effect of Coal BeddingZHAI Cheng, MA Zheng, ZHANG Jianguo, XU Jizhao, SUN YongTest·Research5-93Study on Strength Test of Coal Mass Containing Gas Based on Drop Hammer MethodGUO HuaiguangTest·Research10-134Experimental Study on Adsorption Characteristics of CH4, CO2 and Their Multi-component Gases in Huainan C13 CoalZHANG Qinghe, LIU Wenjie, LI Ning, DUAN ChangruiTest·Research14-175Microstructural Changes of Pulsating Hydraulic Fracturing Coal Seam and Its Engineering PracticeWANG Ning, LI Shugang, DENG ZengsheTest·Research18-226Study on Influence Mechanism of Negative Pressure on Gas Drainage EffectZHANG Huaisen, QIN Yujin, SU WeiweiTest·Research23-26,317Experiments on Different Pore Saturation of Coal Containing Gas HydrateJI PengfeiTest·Research27-318Study on Characteristics of Nano-pore Structure of Anthracite in Xinjing Coal Mine by Atomic Force MicroscopicWANG XiaodongTest·Research32-359Study on Atomization Characteristics and Dust Reduction Performance of Common Pressure NozzlesWANG Jian, LIU Ronghua, WANG Pengfei, TAN Xuanhao, SHI Yijie, TIAN ChangTest·Research36-4010Experimental Study on Dust Control in Bolt-shotcrete Working FaceWANG Zhibao, GONG XiaobingTest·Research41-4511Influence of Moisture Content on Spontaneous Combustion Reaction of Long Flame CoalZHU Jianguo, DAI Guanglong, TANG MingyunTest·Research46-50,5512Numerical Simulation and Experimental Study on Effect of Section Shape of Roadway on Safety and Stability of StructuresZHANG Han, ZHANG Junhua, DAI LipingTest·Research51-5513Research on Hydrogeochemical Characteristics in Balasu Well Field of Yuheng Mining AreaFANG Gang, YANG JianTest·Research56-6214Study on Rock Burst Mechanism of Isolated Downhill Coal Body in Thick Coal Seam of Ultra Deep WellWANG Gaoang, ZHU Sitao, ZUO Erning, YANG Guangyu, WANG Baoqi, ZHOU Tao, KONG ZhenTest·Research63-66,7115Study of Creep Mechanics of Shale with Chemical Corrosion EffectWANG Yanchun, WANG Yongyan, LI JianguangTest·Research67-7116Automatic Expansion and Fast Sealing Device and Technology for Approximate Horizontal Coalbed Gas Drainage Drilling and Its ApplicationHAN BingTechnology·Innovation72-74,7917Research on Shotcrete Control Technology for Replacing Coal Pillars by Gangue Wall Along Gob SideTU Qiang, YIN XiaoqiangTechnology·Innovation75-7918Validation Methods of Upper Long Distance Goaf Harmful Gas Discharge Based on Drilling Camera and Tracer TechnologyLI JieTechnology·Innovation80-8319High-strength Combined Supporting Technology of Coal Roadway with Large Thickness and Thin-Layered Composite RoofZHAO Mingzhou, YANG Renshu, FANG JuanTechnology·Innovation84-8720Roof Fall Mechanism Analysis and Reinforced Support Technology of Return Roadway in Bulianta MineLIU Weifeng, ZHUANG XinTechnology·Innovation88-91 