1Stability and Control Research on the Fully Mechanized Caving End Face in Weak Coal SeamFANG Xin-qiu, HE Hong-hua, ZANG Chuan-wei1-32Control and Analysis of Noise Mechanism of Hydraulic DriveWANG Rong-jie4-63Overburden Failure and Surface Feature Analysis of Mining in Condition of the Special NappeFU Xian-jie7-94Design of Universal Wheel of PR-12/6 Pedestrian Car in the RoadwayJIANG Mao-lin, MA Li-jun10-125Analysis of Freezing Borehole of Auxiliary Shaft in Suburb Coal MineZENG Fan-wei14-156Development and Reform of 35 kV Power Supply Breaker of Xuzhou Coal Mining Group Ltd.ZHENG Gang, LU Yan-yan16-177Determination of Bolting and Beam Supporting Parameters of Coal Roadway in Condition of Composite RoofCHEN Xiu-you, WANG Jian, ZHOU Feng19-218Analysis and Existing State of Mine Water in Xuzhou Coal Mining Group Ltd.WU Xiao-lan22-239Explosion-proof Measures and Mechanical Analysis of Explosion Shock of Piling Hole base Rocks for Acting on Wall ProtectionYUAN De-hai, YU Xiao-lu24-2610On Improvement and Cause of Water Leakage from Underground Drain Hole in Daliu Coal MineCHEN Chuan-dong, LI Shi-xin, ZHU Xiu-she27-2911Manufacture and Application of YCZ-50 Hydraulic Dismounting MachineREN Ming-kui, XU Ming-chu38-3912On Improvement of Liquid Press for Manufacturing the Blaster CapJIN Chun-yu40-4113Prevention, Endanger and Cause of Harmonic Wave in Enterprise Power networkLU Yan-yan, ZHENG Gang41-4314Knowledge and Practice of Roof Control of Coal Face in "Three Soft" Coal SeamTIAN Zhi-ming, REN Qi-chuan45-4715Distinguishing the Channel and Water Source of Water Leakage from No.7107 Working Face Roof in en al. Zhangshuanglou Coal Mine47-4816Stady on Management of Belt Transportation Based on the Mine Fire Accident of BeltWANG Wei-dong, JI Jian49-5017Prevention of Coal Spontaneous Combustion by Using the Pillarless Mining in Inflammable Thick Coal SeamAN Du-qin51-5218Cause of Local Gas Accumulation and Its PreventionGUAN Jin-hai54-5519Developing the Younger Creation Engineering of Enterprises for Going along the Sustaindble Development WayFENG Wei, XU Xiang-zuo58-59 