1Study on Comparison and Analysis on Pressure Releasing Effect of Boreholes in Soft and Hard SeamYI En-bing, MU Zong-long, DOU Lin-ming, JU Jian-guo, XIE Long, XU Da-lianMining and Underground Engineering1-5,852Roof Support Technology of Open-Off Cut for Fully Mechanized Coal Mining Face Under Goaf AreaWANG Yuan-ming, FENG Wei, BAI Jian-biaoMining and Underground Engineering6-8,113Study on Pilot Roof Support Pressure Distribution Law of Coal Mining Face in Dongqu MineXUE Cheng, ZHAO Jian-feng, WANG Gang-shengMining and Underground Engineering9-114Experiment Study on Mine Pressure Bumping Prevention and Control with Directional Hydraulic Fracturing in SeamGUO Xiang-binMining and Underground Engineering12-14,745Study on Abnormal Mine Strata Pressure Behavior During Deep MiningWANG Ying-qi, CHEN Yong, ZHENG You-lei, GUI Bing, WANG Zhi-fengMining and Underground Engineering15-176Study on Relationship Between Initial Support Force of Hydraulic Powered Support and Mine Strata Pressure Behavior of Coal Mining FaceWAN Feng, ZHANG Hong-qing, HAN Zhen-guoMining and Underground Engineering18-20,257Experiment Study on Backfill Mining with High Water Swelling MaterialLIU Shu-jiang, SHI Jian-xin, WANG Wei, LI Zhi-pei, WANG Xiang-hong, GUO Chuan-junMining and Underground Engineering21-258Design on Powerful Advance Support System of Mining Gateway in Fully Mechanized Top Coal Caving Mining Face in Deep MineZENG Ming-shengMining and Underground Engineering26-299Experiment Study on Pre-cracking Blasting and Permeability Improvement Effect with Deep Borehole for Seam Opening of CrosscutLIU Jian, LIU Ze-gong, CAI FengSafety Technology and Engineering30-32,12810Goaf Gas Flow Law and Application of Gas Drainage Technology with Separated Gas ResourcesHE Zhi-gang, LU Jie, HAN Zhao-yan, L(U) Zi-wei, LI HaoSafety Technology and Engineering33-3511Study and Application of Emulated Dynamic Simulation for Mine Ventilation SystemZHOU Sheng-cai, CHEN Jiu-fu, ZHOU Zheng-lin, PAN Xin, LIAO LiSafety Technology and Engineering36-38,4112Outburst Prevention Technology of Seam Opening in South Ventilation Shaft of Yuwu Coal Mining CompanyJIANG Wan-gang, Lin Fu-jin, ZHANG JunSafety Technology and Engineering39-4113Analysis on Thermal Environment and Selection of Airflow Cooling Methods in Coal Mining FaceWANG Wei, YANG De-yuanSafety Technology and Engineering42-4514Optimized Design of Seam Gas Pre-drainage PlanLI Jian-yunSafety Technology and Engineering46-4815Application of Q JR-350/3.3S Soft Starter to Mine Scraper ConveyorWANG Hai-jun, GAO XinMachinery Electric and Automatization Hot Technology49-51,8116Research on Handy Plasma Coating on Intermediate Pan of Scraper ConveyorLIU Ming-fang, ZHANG Bing-quan, MA Zong-binMachinery Electric and Automatization Hot Technology52-5417Study on Sealing Performance Evaluation Technology of Sealing Element for Hydraulic Cylinder of Hydraulic Powered SupportZHANG Xi, LIU Jie, XU Qi, LIU Xue-li, ZHANG Ji-yeMachinery Electric and Automatization Hot Technology55-5718Fast Switching Device Applied to Power Supply of Main Ventilator in Yuecheng MineMA Hong-liMachinery Electric and Automatization Hot Technology58-6019Summary of Intrinsic Safety Electric Circuit TechnologyYU Yue-sen, XIE Dong-ying, LI Shi-guang, WU Xiao-jieMachinery Electric and Automatization Hot Technology61-6520Study on Bypassing Trip for Electric Power Supply System in Coal MineYIN Cheng-xun, PAN Xian-quanMachinery Electric and Automatization Hot Technology66-69 