1Mix Ratio Design and Application of High Strength and HighPerformance Concrete to Mine Freezing Shaft LinerSUN Shi-yuan, YAO Zhi-shu1-42Open-off Cut Support Technology of No.22801 Fully Mechanized Top CoalCaving Mining Face in Tanyaoyu MineYU Wei5-83Rapid Driving Technique of Large Cross Section Full Seam GatewaySONG Yi-ping9-11,84Design on Long Distance Time-Sharing Transportation System of Coal RefuseLI Jing-chao12-155Grouting Construction with Additional Boreholes in Pre-Groutingat Mine Shaft Sinking FaceZHOU Xin-qing, LI Feng-guo, LIU Cheng-wu, QI Ke-hui16-17,156Study on Cryogenic Heat Transfer Features and High Efficient CoolingTransfer Application of PVC PipeLI Fang-zheng, ZHANG Song, CUI Bing-bing, DING Hang18-237Analysis on Stability of Pressure-Bearing Drill Rod in VerticalSlotted Hole Drilling24-278Optimized Design and Analysis on Mechanics Features of Loading DeviceApplied to Triaxial and High Strength Mine Shaft Liner TestSHEN Ze-hong, RONG Chuan-xin, CHENG Hua, WANG Bin28-319Study on α Cutting Blasting and Heading Technology with Ultra-DeepHoles in Hard RockJIANG Ren-yi, XU Hong-liang, ZHANG Ming-feng32-34,410Study on Stability Quantitative Evaluation Standard of Surrounding Rockalong Tunnel with Top Soft and Bottom Hard StratumZHAO Wen-juan, WU Bo35-38,4711Calculation Method Comparison on Drilling Trajectory Parameters ofSurface Ground Pre-Grouting BoreholeTIAN Qi39-4212Analysis on Safety Stability of Deep Tunnel Initial Support in SwellingLoess Based on FLAC3DJI Yu-guo, YU Fei-fei, ZHANG Xian-tang, LI Hui, ZHOU Hong-min43-4713Evolution Analysis on Danger Coefficient of Surrounding Rock along CrossPassage under Vertical Shaft of Metro SystemMA Feng-kai, XIAO Hong-tian, YAN Qiang-gang48-5214Study on Factor Affected to Instable Failure of Surrounding Rockalong Tunnel with Top Soft and Bottom Hard StratumZHAO Wen-juan, WU Bo53-58,27 