1Review of the Theory and Practice of Strata Control Around Longwall Face in Recent 20 YearsQIAN Ming-gao1-42Support Mechanism of Rock Bolts with Large Prestress, Fast Resistance Increasing and High Working ResistanceLU Shi-liang, QI Tai-yue5-83Study on Pattern and Control of Gas Emission at Coal Face in ChinaYU Qi-xiang, WANG Kai, YANG Sheng-qiang9-144Comprehensive Optimization of Production Rate and Related Decision-Making Factors for Large MinesZHANG You-di, JI Chang-sheng15-195Study on Uncertainties of Spatial Objects in GISGUO Da-zhi, HU Zhao-ling, CHEN Yun-hao20-246Advance in the Key Strata Theory of Mining RockmassMIAO Xie-xing, QIAN Ming-gao25-297Computer Simulation System of Mining-Excavation PlanHAN Ke-qi, HU Ji-feng, CAI Heng-bing, LIU Yin-zhi, Mei Wen-ze, CAO Qi-jian30-338Application of Dynamic Mechanics Model of Overlying Strata Movement and Damage Above GoafWU Kan, WANG Yue-han, DENG Ka-zhong34-369Theoretical Analysis and Calculation of Methane Gas Explosion in Coal GangwayDING Guang-xiang37-4010Study on Windows-Based Software for Mine Ventilation Network SolutionWANG De-ming, ZHOU Fu-bao41-4411Analysis and Lab Measurement of Flame Thickness in Gas ExplosionLin Bai-quan, Chen Bo-hui45-4712Gray Correlation Analysis of Production Cost of Surface MinesJI Chang-sheng, ZHANG You-di48-5113Study on Prediction and Control of Surface Subsidence in Deep MiningDENG Ka-zhong, ZHANG Dong-zhi, ZHANG Zhou-quan52-5514Fuzzy Fault-Tree Analysis with Triangular Fuzzy Number and Its ApplicationLI Qing, LU Ting-jin, LI Ning-ping, ZHANG Yu-zhu56-5915Automatic Extraction of Coordinate Grid Lines from Scanned Mining MapsSHENG Ye-hua, GUO Da-zhi, DU Pei-jun, Tang Hong60-6216Linear Discriminatory Analysis on Coal-Gas Outburst Danger and Its Critical ValueJIANG Cheng-lin63-6617Module of CAD Software System in MiningLIN Zai-kang, YAN Xue-feng, TAO Wei-zhong, XIANG Zong-kai67-69,7718Soft Rock Weathering and Its Effect on Roadway MaintenanceLIU Chang-wu, LU Shi-liang70-7219Critical Height of Immediate Roof and Working Resistance of SupportCAO Sheng-gen, QIAN Ming-gao, MIAO Xie-xing, LIU Chang-you73-7720Study on Drainage of Relieved Methane from Overlying Coal Seam Far Away from the Protective Seam by Surface WellXU Jia-lin, QIAN Ming-gao78-81 