1Effect of Pore Fractal Characteristics of Gas Coal on Gas AdsorptionLIU Jikun, LI Chengzhu, WANG CuixiaTest·Research1-5,102Experimental Study on Pressure Relief Gas Extraction of Goaf with Large Diameter Borehole in High Gas Close Distance Coal SeamsSHAO Guoan, ZOU YongmingTest·Research6-103Effect of Electric Potential Gradient on Methane Adsorption and Desorption Behaviors in Lean Coal Modified by Electrochemical TreatmentZHANG Xiaoyu, KANG Tianhe, ZHANG Runxu, ZHANG Bin, KANG Guanxian, ZHANG LiankunTest·Research11-154Sensitivity Analysis of Influence of Many Factors on Coal Permeability Under Non-isostatic Deviating StressZHANG Yaqi, PENG WenqingTest·Research16-195Influence of Different Geological Structures in Yangquan Mining Area on Outburst-related Physical Parameters of CoalLINGHU Jianshe, YAN Zhiming, XU ChaoTest·Research20-23,296Experimental Study on Air-drying Heat and Spontaneous Combustion Characteristics of Hydrated CoalDONG Ziwen, PI Zikun, LUO Chen, PENG Bin, MENG Liping, WEI ShilongTest·Research24-297Preparation and Properties of a Novel Coal Dust Inhibitor with Cross-linked Network StructureHUANG Xueman, DING Guanghui, ZHANG Qian, LU WeiTest·Research30-348Study on Applicability of Different Desorption Formulas to Gas Desorption of Mixed Particle CoalLI XiuleiTest·Research35-409Preparation and Properties of High Water Filling Material for Coal Gasification SlagXU Yang, XU Zaigang, XIE Hongfei, LI Cuiqin, CAO Yang, CHEN QianlinTest·Research41-46,5110Study on Micro-pores Characteristics of Coking Coal Under Long-term Gas ActionNIU Wenxing, FENG Zijun, YANG Yifan, WAN ZhijunTest·Research47-5111Study on Reasonable Location of Top and Bottom Extraction Roadway of Confined Water Based on High Precision Micro-seismic MonitoringYU Chunsheng, ZHAI ChangzhiTest·Research52-5812Study on Evolution and Subsidence Fractal Characteristics of Overlying Strata in Thick Loose Layers and Thin BedrocksGUO Longhui, CHENG Hua, PENG Shilong, FU BaojieTest·Research59-6413Aeolian Sand Paste Filling Material Ratio Based on Repeated Orthogonal TestCAO Xiaofan, TANG Yichuan, DENG Niandong, SHANG Hui, WANG YiTest·Research65-7014Butted Technology Between Underground Directional Drilling Borehole and Vertical Well of Surface U-type Well GroupYANG Junzhe, JIN Xin, GENG ZengyangTechnology·Innovation71-74,8015Collaborative Prevention and Control Technology of Coal Spontaneous Combustion in Goaf Under the Influence of High Pumping AlleyXING Lijie, LIU Fen, JIN Yan, SONG Yushan, GUO JunTechnology·Innovation75-8016Air Leakage Technology of Micro Positive Pressure Sealing by Nitrogen Injection in Connection RoadwayLIU Zhongquan, WANG WeiTechnology·Innovation81-84,8817Control Technology of Coal Spontaneous Combustion Fire in Complicated SurroundingsCAO KaiTechnology·Innovation85-8818Prevention and Control Technology of Rock Burst in Roadway Excavation in Irregular Remaining Coal Pillar Area Adjacent to Goaf SideDONG Jingyuan, XUE Chengchun, CAO Anye, BAI Xianxi, GU Yu, ZHOU ChangfengTechnology·Innovation89-9319Treatment Technology of Roof Watering in Ditch Driving Roadway of Shallow Coal SeamGAO Bin, JI Zhongkui, YANG Fan, ZHANG Chi, REN Zhizhi, LUO Ankun, XUE XiaoyuanTechnology·Innovation94-9720A Device for Straight Drilling of Coal Mine Gas Extraction BoreholeDUAN ZhiguoDesign·Development98-100 