1Mine Strata Pressure Activity Law and Surrounding Rock Control Technology of Fully Mechanized Coal Mining Face with the Gateway Retained along the Goaf in Thick SeamPAN Zhongde, SHANG Limin, WANG Chenkai1-6,622Analysis on Engineering Geological Features of Watery Soft Soil and Design on Drilling Fluid PerformancesSHI Zhenghong, CHEN Zhenguo, TIAN Le, YANG Ming7-93Detection and Control Technology of Mine Shaft Sinking Passed Through GoafLIU Yanjie10-154Analysis on Deformation Law of Stratum Grouted with Horizontal Drilling Hole in Watery Soft SoilLI Wei, LI Peipei, LI Fangzheng, ZUO Yongjiang, GAO Wei16-195Geological and Hydrogeological Features of Ordovician Limestone in East Area of Kaiping CoalfieldZHANG Liyu20-236Construction with Ground Pre-grouting in No .2 Mine Air Intake Shaft and Air Return Shaft of Majialiang MineCHEN Long, LIANG Min24-287Static Sounding Technology Applied to Evaluation on Grouting Effect of Horizontal Drilling HoleYU Ning, SHANG Yanna, LI Fangzheng, WANG Hua, LI Shengsheng29-328Geological Radar Detection Method Applied to Evaluation of Grouting Effect in Horizontal Drilling HoleMA Jianmin, XU Qingming, YANG Xue, CHEN Hui, GAO Xiaogeng33-359Surrounding Rock Deformation Features and Support Technology of Deep Roadway in Shuiyu MineLIU Dong, ZHANG Jian, LIU Aiqing, LI Li, MENG Xiaogang36-4110Analysis on Dynamic Characteristics of Interaction System in Coal Pile and Coal Falling Silo under Different Coal Storage ConditionsWU Chunye, ZHAO Na, LI Chuantao42-4511Study on Numerical Simulation Optimization of Ground Freezing Construction Plan in Libi MineZHANG Wei, RONG Chuanxin, WANG Bin, SHI Xin, SUN Shicheng, JIANG Xiaogang46-5112Characterization on Multiple Uncertain Factors of Freezing Mine Shaft and Analysis on Reliability of Mine Shaft LinerYANG Jinhong, WANG Tao52-56,6213Study and Design on Lifting Device for Disassembling and Assembling of Shield Tunneling Machine in Mine ShaftSUN Tao, ZHOU Shuisheng57-6214Application of Total Station Gyroscope to the Reformation of Mine Plane Control SystemYIN Mingguo63-65 