1@@前插12Selection on Mine Shaft Number and Equipment of Ultra Large Shaft Development MineYIN Jun-lianDesign and Technology1-33Key Issues Handled in General Planning Preparation of Coal Industrial Mining AreaNIU De-zhenDesign and Technology4-5,94Discussion on Application of Borehole Escape Mode to Refuge Chamber in Underground MineCHEN Bao-qiang, JIANG Shu-guang, SUN Qin-sheng, WANG Yun-hangDesign and Technology6-95Partical Reconstruction Technology of Mine-15m Level Transportation Roadway in Lugou MineLU Qian-ming, PENG Hai-feng, DONG Guan-jieDesign and Technology10-126Analysis on Aquifer in Sala Wusu Group Affected to Seam Mining in Hanglaiwan MinefieldWANG Chang-you, ZHENG Zhong-you, HUA Zhao-wen, WU Jiang, ZHANG ChaoDesign and Technology13-167Design on Monitoring System of Coal Mine Temperature and Humidity Based on Wireless Sensor NetworkMENG BiaoDesign and Technology17-19,228Research on Variable Frequency Control Technology for Asynchronous MotorLI Hong-hui, ZANG Chao-wei, ZHANG BingDesign and Technology20-229Application of PDMS 3D Software in Coal Preparation Plant DesignXU LeiDesign and Technology23-24,2710Topology Optimization for Steel Cylinder Silo DiaphragmLIU Jie-hui, WEI Zheng-zheng, WANG Gui-meiDesign and Technology25-2711Study on Site Measurement of Freezing Pressure in Cretaceous Strata Section of Mine ShaftLI Bo-rong, YANG Geng-she, XI Jia-mi, CHEN Xin-nian, QU Yong-longConstruction Technology28-3112Analysis on Effect of Automatic Water Refilling Method Applied to Prevent Mine Shaft CrackingDENG Xiao-ling, JIANG Chun-cai, XU Yan-chun, LI Jiang-hua, LIANG Li-mingConstruction Technology32-34,3713Analysis on Hazard Source and Prevention Countermeasures of Tunneling Working Site in Capital Construction MineZHANG Hong-bingConstruction Technology35-3714Study on Key Technology of Support for Thick Seam Gateway Retained Along Goaf in Mine with Mine Strata Pressure BumpingHE JieConstruction Technology38-4115Study on Support Technology of Wedge Wall at Intersection of Mine RoadwayWAN Yong-bin, LI Shao-quan, WU Gui-yi, WANG Feng, WEN Pai-keConstruction Technology42-4416Study and Application of Cutting Mode and Parameter Optimization of Hard Rock HeadingXU Gang, CHEN Guo-caiConstruction Technology45-4617Application of Support Technology to Excavation of Water Sump at Mine Shaft Bottom Passing Through Seam Group with Close DistanceGUO Zhi-weiConstruction Technology47-49,5218Treatment Scheme for Broken Pile Accident of Bridge Bored Cast-in-place pileZHANG PingConstruction Technology50-5219Integration Technology of Open Backfill Mining and Gateway Retained with Ultra High Water Material in Secondary Mining BlockYIN Bao-ting, SHANG Bao-bao, LI Nai-liang, LIU Shi-fa, LI Shao-huaProduction Technology53-55,5920Study and Application of Gob-Side Entry Retaining Technology in Large Section Coal Roadway of High Gas MineLUO ZhongProduction Technology56-59 