1Occurrence of Coalbed Methane in Coal_seam and It′s ControlsSu Xianbo, Liu Baomin157-1602Wave Process Analysis of Sedimentary Basin and Erosion Quantity of UnconformitiesQi Yongan, Liu Guochen161-1653Study on the Destruction Laws of the Cover Rocks of the Thick Coal_seam by Different Mining MethodsYin Zengde, Li Wei, Wang Zongsheng166-1684Mathematical Models of Unstable Air Pressure Field and Unstable Temperature Field and Heat_pressure Calculating of Three_dimension in the GoafDu Liming, Yang Yunliang169-1735Crey Prediction of Catastrophe About the Occurance Date of Working Front Roof AccidentsJia Mingkui, Wang Yongjian174-1776An Experimental Study on the Prediction of Formation Drillability and Rate of Penetration by Sonic Log DataLi Zukui, Li Chuncheng, Yuan Yongsong, Yan Jing, Zhai Yinghu, Wang Kexiong178-1817Design of Hardware on the Chebyshov Neural NetworksLiu Zurui, Zeng Zhezhao182-1848Soft Surrounding Rock Mass Control Technology on High Cut in Fully_mechanization FaceWu Shiliang185-1889Breaker Line Management and Working Effect Research in Unstable Roof Working FaceFeng Xiwen, Wang Guangping189-19210A Speedy Construction in the Baserock Section of the Vertical ShaftsLi Yinqiao, Lan Yusheng, Li Zhenfeng, Wu Shuli193-19611Study on the Explosion and Safety Technology for Coal Uncovering in Gas Tunnels in Yuntai MountainsShao Juntao197-20212Geological Tectonic Condition of Wenbinshan Field Effected on the Gas Reservation and its Preventing MeasuresLai Guanhuan203-20613Discusion on the Resource of Coal_seam Gas and its Present Developing Situation in ChinaSui Shiqing, Xu Huijun, Li Zhongfeng, Tie Lei207-21014The Application of the Tectonic Stress and its Motion Laws to the Field Tectonic Dividing Regions in GengcunRu Aijun, Tang Hui, Wang Liucheng, Chen Jiangfeng211-21415Two Problems in the Tests of the Loess Saturated YieldingLiu Yu215-21816The Study of Viscoelastic Numerical Stimulation of Shaft Lining Fracture under Special Strata ConditionLiu Xiliang, Luo Jing, Hua Anzeng219-22217Study of Damage Mechanism and Reinforcement Technology of the Soft Rock Drifts in Juji Coal MineCheng Dongquan223-22718Machining the Inner Hole Measurements of the Cylinder Block with the Same DatumYang Wuzhou228-23019Fischer Inequality of M_matrices and Inverse M_matricesZheng Yumin, Cui Runqing231 