1Adsorption and Desorption Characteristics of CH4 on Coal with Different Depths in Gujiao Mining Area of Xishan CoalfieldZHOU Jiarui, SONG Xiaoxia, LI WeiTest·Research1-72Effects of Cementing Agent and Particle Size Distribution on Adsorption and Permeability of BriquetteSU Shilong, LI Libing, GUO Xiaoyang, MU YongliangTest·Research8-113Experiment and Application Study of Two-component Composite Grouting Material for MineBAI Longjian, YAN GuochaoTest·Research12-17,224Study on Response Law of Coal Pore Structure and Permeability Affected by Different Time of AcidificationQIN XinglinTest·Research18-225Influence of Pore Structure of Coal-based Activated Carbon on Separation of Low-concentration GasZHANG Yachao, FU Hanghang, WANG Fujun, WENG Qi, DOU ChengyiTest·Research23-266Study on Thermal Loss and Heat Transfer Characteristics of Oxidized Spontaneous Combustion of Coal-based Activated CarbonPANG Pan, XIAO Yang, LIU Kunhua, HUANG Chuanliang, LU XiaodongTest·Research27-337Study on Hydraulic Connection of Multiple Aquifers Based on Dewatering Test of Sandstone Aquifer from FloorZHAO Baofeng, LYU YuguangTest·Research34-398Simulation Study on Parameters of"High-level Annular Body"for Surface Drilling and Drainage FaceGUO Zhongkai, HUANG He, YU Guofeng, CHEN Benliang, CHENG Haiyan, YU YunfeiTest·Research40-449Risk Prediction of Water Inrush from Roof of Ultra Thick Coal Seam Based on GISLONG Liangliang, WANG Shengquan, XIAO Lele, NIU ChaoTest·Research45-49,5510Effect of Low Temperature Oxidation Process on Coal Quality Characteristics of Coal with Different Metamorphic DegreesWANG Hao, SONG Wanxin, WANG Chuanyi, ZHANG Quan, YANG ShengqiangTest·Research50-5511Study on Deformation and Failure Laws of Surrounding Rock in Layered Rock Roadway by Discrete Element MethodWANG Huifeng, SONG LibingTest·Research56-6212Study on Developing Mechanism of Coal Pillar Pressure of Shallow Coal Seams with Thick Seam Spacing Passing Through Overlying GoafZHANG Jie, CHEN Cheng, ZHANG Jianchen, ZHOU Fuwei, LONG JingjingTest·Research63-6813Influence of Physical Parameters of Coal Seam on"Cross"Phenomenon of Rayleigh In-seam Wave Dispersion CurveHE Daxi, ZHU Peimin, SHEN Suishui, CAI Wei, WANG WengangTest·Research69-7414Mine Comprehensive Fire Prevention and Extinguishing Technology for Shallow Buried Short Distance Coal Seam GroupAN ShigangTechnology·Innovation75-7815Technology of Long-Distance Draining Goaf Water Under the Condition of Repeated MiningLI Xiaolong, MU PengfeiTechnology·Innovation79-8416Surrounding Rock Stability Control Technology of Soft Rock Roadway Passing Water Conductive FaultWANG JunliangTechnology·Innovation85-92,9917Support Technology of Limestone Roof Roadway in Qiuji Coal MineWU Shanyuan, ZHU Qingwen, YUN Ming, LI Tingchun, XU Qingguo, GUO HongyunTechnology·Innovation93-9918Mine Outburst Prevention Information Prediction Equipment System and Its Application EffectXU XuezhanDesign·Development100-10419Safe Operation Technology of Main Fan in Zhaogu No.1 Coal MineHU YongliDesign·Development105-10820Analysis of Influencing Factors of Wireless Charging Safety in Underground Coal Mine and CountermeasuresMENG Jijian, CHEN YongranDesign·Development109-112 