1Design of Remote Signal Transmission System in Mine Roof Descending MonitoringHOU BoAchievements of Science and Research1-42Design of Remote Monitoring and Control System of Coal Output Based on ModemLI Mu-dan, YUAN Li-bingAchievements of Science and Research4-73Research of Automatic Sprinkling Water Control System before Shooting of Coal MineXU Le-nian, ZHAO Qing-chuan, HAO Ni-ni, LIU Hua-weiAchievements of Science and Research8-104Control System of Electromagnetic High-frequency Screen Based on PIC18F452QIU Li-cun, TANG Yue-huaAchievements of Science and Research11-135Application Research of Arcing Chamber with Sealed Pole in Mine-used High-voltage Vacuum BreakerAchievements of Science and Research14-156Discussion on Development Situation and Key Technologies of Digital Mine in ChinaL(U) Peng-fei, GUO JunTechnology Discussion16-207An Automatic Detecting Method for Position and Posture of Boom-type Roadheader Based on Laser GuideDENG Guo-huaLaboratory Research20-238Application Research of Data Mining Technology with Association Rules in Early-warning System for Coal Mine SafetyZHANG Zhi-bin, JIANG Ya-nan, GUO Zheng-huiLaboratory Research24-269Application of T-S Fuzzy Model in Discharging System of JiggerFU Jia-cai, TENG Ji-rongLaboratory Research27-3010Research of Ball Mill System Based on Fuzzy Internal Model ControlSU Wei-xia, HAO Wei, CHEN Hong, WANG He-jinLaboratory Research30-3411Evaluation of Top Coal Caving Characteristics for 1604 Fully Mechanized Caving Face of Lutian Coal MineZHANG Fei, SUN Er-wei, ZHANG Wei, LAN Yi, SUN Jian-ling, TIAN Wu-qiangLaboratory Research34-3712Influences of Speed and Piston Stroke on Preformance of Air-powered EngineLaboratory Research38-4013Research of Key Parameters Identification of Asynchronous Motor Based on DSPLaboratory Research41-4514Compensation Technology of Restraining Thrust Fluctuation of PMLSMFU Zi-yi, LI Hua-qun, LIU Ai-junLaboratory Research45-4815Design of Spontaneous Fire Monitoring System of Coal Mine Underground Based on WSNMENG Fan-cheng, LI Chang-luLaboratory Research49-5216Traveling Wave Fault Ranging of Underground Power NetworkTIAN Shu, MA Shi-shenLaboratory Research52-5517Leakage Detection Device for Mine Power Supply Network Based on Dual-controllerHAO Ying-ji, ZHAO Da-shuai, PENG Bin, FU LeiLaboratory Research56-5918Research of Method of Transient Component Line Selection Leakage Protection Based on Wavelet AnalysisYANG Li-jun, TU JianLaboratory Research59-6219Research of Temperature Compensation of Optical Fiber Current Sensor Based on MatlabMA Tian-bing, ZHAO Yao-jun, ZHANG Hui, YANG Yuan-huiLaboratory Research62-6420Development of Monitoring Substation of Belt Conveyor Centralized Control System with Protocol Conversion FunctionLI Hua-long, OUYANG Ming-san, LU JunExperiment Exchange65-68 