1Consideration on Planning System of Coal IndustryLI Rui-fengExperts Forum1-32Analysis on Formation Mechanism of Contradiction Between Coal and Electric Power Industries in ChinaLIU TaoExperts Forum4-63Practices on Unequal Length Adjusted Inclined Mining of Fully Mechanized Coal Mining Face Under High Inclined and Complicated Geological ConditionsYU Zhi-zhuoDesign and Technology7-94Discussion on Rational Width of Protective Coal Pillar for Mine Soft Rock RoadwayJING Huan-qing, GAO Ming-zhong, YANG De-chuan, LI Liang-shan, ZHANG Xiao-mingDesign and Technology10-12,185Rational Defined Parameters for Mine Water Pumping Test and Dewatering DesignWANG He-sheng, SUN Ya-jun, LI YanDesign and Technology13-156Research on Voltage Type PWM Rectifier Base on Voltage Outer Loop and Power Inner loopJIA MiaoDesign and Technology16-187Research on Improvement Technology of Electric Power Quality in Mine Electric NetworkDUAN Peng-fei, JING Wu, WANG Zi-yi, LIU Jian-gong, Meng Guo-yingDesign and Technology19-208Study on Optimization of Clarified Coal and Clean Water System in Xieqiao Coal Preparation PlantZHANG HongDesign and Technology21-229Highway Design and Traffic SafetyREN Bao-li, GAO Guo-bangDesign and Technology23-24,2710Design and Application of Larger Diameter Pile to ProjectsWANG Chang-junDesign and Technology25-2711Technology for Large Cross Section Seam Gateway Passing Through Fault Under Complicated ConditionsCEHN AiConstruction Technology28-3012Application of Bolt and Anchor Combined Support to Large Span Seam GatewaySONG Yuan-yuan, JIN Zhi-weiConstruction Technology31-3313Research on Support Technology of Mine High Deformed RoadwayWANG BoConstruction Technology34-35,3814Discussion on New Mining Technique with Ultra High Water Material Backfill in Taoyi MineZHANG Wen-tao, FENG Guang-ming, LI Peng-ju, FAN Wei-gang, YANG BingConstruction Technology36-3815Discussion on Determination of Total Resistance and Effect Point Location for Four Leg Hydraulic Powered Caving SupportConstruction Technology39-4116Support Technology of Gateway Along Goaf in High Gassy Fully Mechanized Top Coal Caving Mining FaceConstruction Technology42-4417Application of Water Prevention and Control Technology to Goaf in Liuzhuang MineREN Yu-juanProduction Technology45-46,4918Prediction of Gas Emission From Coal Mining Face in No.2 Seam of Zhengyang MineJIANG Yu-ChaoProduction Technology47-4919Comments on Water Supply Status and Capacity Approval of Tashan MineXU Xi-chengProduction Technology50-5120Discussion on Preparation Technique of Carboniferous-Permian Coal in Yanzishan MineLIU Wen-xuan, LI Zhen-taoProduction Technology52-54,57 