1Development Mode of Research-Design Institute Integration in Coal Construction Industry with the Trinity of Researching, Designing and Construction BusinessSHEN Bin-xue, YE Jian-min, ZHENG Zhong-youExpert Forum1-52Research on the Feasibility of Over-goaf Mining with Room and Pillar Mining in Residual Mining AreaGUAN Rui-binDesign Technology6-93Precise Design for Improving Comprehensive Efficiency of Loose Blasting in Soft-hard Interbedded Rock MassMA Rui-cheng, CHENG Peng, QIAO Hai-ping, LI Fang, CHEN HaoDesign Technology10-134Design and Implementation of a Mine Drainage Centralized Control System Based on iFixLIU Di, YU Zhen-jie, ZENG Shang-qi, LI ZheDesign Technology14-175Environment Impact Post-assessment for Open-pit Coal Mine in Arid GrasslandQIN Hong-zhengDesign Technology18-226Parametric Modeling of Hyperbolic Weigh BinLI Xu, SUN Guo-shun, ZHAO Jian-yangDesign Technology23-277Application of Frozen Wall Formation Characteristics Forecasting and Freezing Control Mechanism in West Air Shaft of Zhaogu No. 2 Coal MineZENG Fan-wei, CHEN Dao-chong, ZENG Fan-yi, CHEN Hong-leiConstruction Technology28-328Construction Technology of Rapid Excavation and Laying by Freezing Blasting in Vertical Shaft with Ultra-deep AlluviumYU Jian-xin, GUO Min, ZHANG Ying-cai, ZENG Fan-wei, ZHANG Dao-hai, ZENG PengConstruction Technology33-379Pre-Grouting Reinfocement Technology with Ground Directional L-shaped Feather Branch Hole for Thick Weathered and Oxidized Zone in Coal Seam RoofLI Ming-jing, ZHANG Dun-xi, LI Wan-feng, LI Shi-huiConstruction Technology38-4110Effects Analysis for Goaf Gas Extraction Using Ground Directional DrillingGUO Xiang-qian, LI Chao, ZHANG Ao, HU Sheng-yong, LIU Ying-ke, KANG Jian-hongConstruction Technology42-4511Key Equipment and Application Effect Analysis of Ultra-long Directional Drilling along Coal SeamWANG Xian, XU Chao, LIU Fei, JIANG Lei, BI Zhi-qinConstruction Technology46-5012Surrounding Rock Control Technology of Pressure Relief and Support Coupling Dynamic Pressure Roadway in Ganhe Coal MineLI Zhong-wei, XUE Xu-hui, HAO Deng-yunConstruction Technology51-5413Study on the Mining Pressure Law of 8. 8m Fully Mechanized Mining Face in Shangwan Coal MineDUAN WeiProduction Technology55-5914Working Face Regional Mine Pressure Analysis Based on Big Data of Support Working ResistanceZUO Ling-yunProduction Technology60-6415Application Test of Permeability Enhancement by Hydraulic Jet Cavity in Regional Outburst Prevention of Heading FaceZHANG Qian, LI LeiProduction Technology65-6816Study on Roof Support Technology for Retracing Channel of Fully Mechanized Mining Face in Shallow SeamYANG Shang, NING Jian-guo, SHANG He-fu, RU Wen-kai, HAO Jia-weiProduction Technology69-7317The Key Technology of Fire Prevention for Spontaneous Combustion Working Face Retraction in High Gas Adjacent Coal SeamsHAO Yu, LIU Zhong-quanProduction Technology74-7918Analysis and Selection for Desulphurization Wastewater Zero Discharge Technology Roadmap in Coal-fired Power PlantLI Hong-yuanProduction Technology80-8519Study on the Failure Law of Overburden with Thin Bedrock and Thick Unconsolidated LayersYI Si-hai, ZHU Wei, LIU De-minResearch and Discussion86-9120Research and Control Technology of Dynamic Pressure Roadway in Extra-thick Coal Seam under Coal PillarWU Le, FENG Zhi-jie, HE Jie, FENG You-liang, HAO Deng-yunResearch and Discussion92-96 