1Numerical Simulation Study on Rational Layout Density and Method of Coal Migration Tracing MarkWANG Jia-chen, GENG Hua-le, ZHANG Jin-wangDesign and Technology1-32Normal Projection Method Applied to Design of Parking Line LotsLI Huan-jinDesign and Technology4-63Study on Stratohorizon Selection Design of Development Roadway in Hudi MineCHU Dong-shengDesign and Technology7-84Study on Pillarless Coal and Gas Simultaneous Mining Technology of Thin Seam Protective SeamZHONG Yao-hua, XIE Wen-bing, XIE Xiao-ping, DING Guo-feng, SHI Ji-heDesign and Technology9-11,145Design on Additional Submersible Pump System in Xinji No.2 MineGAO Li-kuiDesign and Technology12-146Design Plan of Frozen Soil Blasting in Copper and Molybdenum Mine of Wunugetu MountainLI Qi-jun, WANG Ze-jun, WANG Wei, GONG Xin-zhongDesign and Technology15-187Design on Intelligent Power Charging System of Mine UPSCUI Hao-chen, LI Yue, SHA Cheng, YANG ChaoDesign and Technology19-218Experimental Study on Secondary Floatation of High Ash Difficult Floated SlimeZHANG Long-xin, XIAO Yan, NI ChaoDesign and Technology22-24,279Experiences on Design of Shear Wall Structure for High Building in Fumei GardenWANG Zhao-xia, TIAN Ya-zhen, LI Sheng-liDesign and Technology25-2710Application of Rapid Heading Technology with Deep Borehole Blasting in Mine Large Cross Section Rock RoadwayHUANG Qi-ming, FENG Xing-yu, ZHAO WeiConstruction Technology28-30,3311Analysis and Treatment on Drilling Pipe Broken Accident of Mine Large Diameter Shaft in Binchang Mining AreaMO Hai-taoConstruction Technology31-3312Study on Floor Heave Measurement and Control Technology of Mine Roadway in Chahasu MineLIU Yao-ming, QIN Jiang-yan, WANG Jian-feng, ZHANG Zhi-shanConstruction Technology34-3613Study on Grouting and Reinforcement Technology of Broken Roof in Fully Mechanized Top Coal Caving Mining FaceLI Peng, WANG GangConstruction Technology37-38,4214Study and Application of Flowing Water Grouting Technology with New High Strength and Micro Expansion Grouting MaterialLI Jin-wang, ZHANG Yao-hui, YE Yun-na, ZHANG Wang-lei, CHEN Peng-yuConstruction Technology39-4215Application of Backfill and Water Shutoff Technology in Annular Space of Freezing Pipe and Quality ControlWANG KaiConstruction Technology43-4516Rapid Installation Technology of Fully Mechanized Inclined Mining Face with High Inclination and High CuttingZHU Ruo-jun, LI Zhi-hua, YANG KeProduction Technology46-4817Practices on Secondary Mining Technology of Goaf Coal Pillars in Previous Gateway of Fully Mechanized Coal Mining FaceJIN Sheng-yao, HUA Xin-zhu, ZHA Wen-huaProduction Technology49-51,5418Study on Comprehensive Control Technology of Large Area Firing Zone in Above Seam Mining Goaf of Bulianta MineZHANG Xin-hai, LI Hao, ZHANG Li-huiProduction Technology52-5419Study on Pre-Cracking Technology of Mine Roof in Fully Mechanized Top Coal Caving Mining FaceZHENG Wen-xiangProduction Technology55-5720Study on Iron Rust Cause and Solution of Gas Drainage PumpLIAN Zhen-shan, ZHAO Jing, WANG Da-wei, WANG Shuan-lin, ZHANG Zhi-rongProduction Technology58-59 