1Study on Prediction and Prevention of Dangerous Area of Spontaneous Combustion in Overlying Goaf of Extremely Close Coal SeamLIU Dongyang, WANG Jiren, ZHANG Xun, HUANG Ge, GUO Xiaoyang, ZHANG Jing, WANG LijieTest Research1-62Numerical Simulation of Fire in Intake Airway in Fully Mechanized Working FaceWANG Jianguo, WU Ruimeng, YIN Xiong, SU JunkaiTest Research7-11,153Study on Influence of Nitrogen Injection Flow Rate on Nitrogen Diffusion Radius in GoafCAO Zhigang, SHI Jilin, ZHANG Haiyang, CHU Xinlong, ZHAO KaiTest Research12-154Study on Coal Pillar Width and Control Technology on Gob-side Roadway of Isolated Fully Mechanized Working Face in Ultra-thick Coal SeamDU Peng, TU MinTest Research16-205Study on Mechanical Properties of Soil-rock Mixture in Open-pit Slope based on In-situ Push Shear TestLI MeihuaTest Research21-24,316Study on the Mechanical Environment and Adaptability of Fillings beside Non-pillar Mining RoadwayGAO Mingtao, XIN Hengqi, GUO Zhongping, MO Ji, PANG Jilu, LIU ChonglingTest Research25-317Damage-seepage Model of Borehole Coal and Its Application for Pressure Relief in Gas Extraction of Coal SeamHUANG XuemanTest Research32-368Preparation and Performance Test for Coal Mine Filling Material of Furnace Bottom Ash -Coal GangueZHANG Yuanxin, LU Qianming, WANG Zhenzhen, LIU XingyaTest Research37-419Numerical Simulation and Application of GPR in Advance Detection of Coal TunnelingQIU NianguangApplication Techniques42-4610Research and Application of Online Monitoring Technology for Mine Ventilation NetworkLUO Guang, ZOU Yinhui, NING Xiaoliang, JIN NiqianjunApplication Techniques47-50,5511Application of the Theory of Water and Gas Replacing in Hydraulic Fracturing Engineering of Coal SeamTANG Jianping, SUN Dongling, WU Wenbin, SUN PengApplication Techniques51-5512Properties and Sealing Effect of New Colloidal Materials for Drilling and Sealing for Gas ExtractionWANG Xiaopeng, LIN GuilingApplication Techniques56-59,6513Research and Application of Reasonable Width of Flexible-formwork Concrete Fillings beside Gob-side Entry Retaining in Medium-thickness Coal SeamHAO Xiaofei, HAO Bingyuan, XIE Yisheng, ZHANG TaoApplication Techniques60-6514Gas Drainage by High Position Directional Long Borehole in Close Distance Coal Seam GroupCHEN Gonghua, WEI Zeyun, LIANG Daofu, LI Xijian, LI Ming, WANG KaiTechnical Experience66-69,7415Research and Application of Gas Extraction Technology in Goaf by Separate Sources in Roof Strike High-level Long BoreholeLIU Xiubao, PANG Jinlun, FAN Yanyang, LI XinjianTechnical Experience70-7416Research and Application of Pressure Relived and Permeability Enhanced Effect of Perforated Slotting Borehole on CoalSUN ZhenminTechnical Experience75-79,8417Prediction of Water Inflow in Wenjiapo Coal Mine Working Face in Analytical MethodHOU Enke, LONG Tianwen, FAN ZhigangTechnical Experience80-8418Design and Implementation of Evaluation System for Pressure Relief Gas Drainage in GoafSONG Shuang, ZHANG Tianjun, LI Shugang, MA Li, PAN ShaoboTechnical Experience85-8919Application of High Density Resistivity Method for Water Accumulated Goaf Detection in Coal MineLIU Guoyong, YANG Mingrui, WANG YonggangTechnical Experience90-9420Gas Drainage Technology by Directional Long Borehole in Roof to Replace GatewayWANG Yong, MA JinkuiTechnical Experience95-98,103 