1The Latest Development of Mechanical Rock Breaking Drilling Technology and Equipment for Large Diameter Shaft in ChinaLIU Zhiqiang, SONG Zhaoyang1-92New Safety High Efficient Pretension Technology-bolt (anchor)Support System Applied in High Stress Zone of Soft Rock in Deep Underground MineZHANG Wuyi10-143Calculation on Pressure in Mine Shaft Lining Based on Mogi-Coulomb Strength CriterionGUAN Xiaodi, HE Shengdong, WEI Huanhuan, MA Di, ZHU Yongfeng15-204Optimal Design on Water Drainage System with Direct Drainage Borehole in Longgu Mine with High Mine Water InflowZENG Fanbiao, TAN Guolong, HE Fenghua21-2453D Seismic Information Applied to Explain Fault in Kouzi East MineLI Hongming25-296Study on Floor Failure Depth after Mining by Geophysical Prospecting and Numerical SimulationFU Xiang, YANG Yong, SHI Wenbao30-347Research on Frequency Conversion Energy Saving and Unattended Control System of Air Compressor Station During Shaft SinkingLI Xiaozhu, FAN Wenbo35-398Study on Surface Movement Observation Technology and Law of the First Mining Face in Hulusu Coal MineYIN Mingguo40-429Experimental Study on High Durability Concrete of Suae Subsea Tunnel StructureLIU Qingfang, FAN Guogang, KUANG Lianfei43-4810Analysis on Deep Clay Stratum Contributed to Long-term Sedimentation of Surface Ground Along Mine Shaft LiningCHE Ping, DIAO Zhixiang, WANG Qishi, SHANG Xiangyu49-54,7011Simulation Analysis on Steel Ball Friction Energy Absorber Based on Recurdyn and EDEMGONG Bin55-5912Simulation Analysis on Self-weight Sedimentation of Deep Thick Clay Layer in East China Mining AreaDIAO Zhixiang, SHANG Xiangyu, WANG Qishi, Zhu Qiyin, Zhou Guoqing60-6613Design of Controller for Double Liquid Grouting PumpWANG Junyong67-70