1Underground Coal Bunker Unblocking Control System Based on Improved Particle Swarm Optimization AlgorithmZHU Zhao, SHI CanDesign and Research1-52Structural Design and Flow Field Analysis of Hydraulic Spool Valve for Coal Winning Machine Based on CFDZHANG Chenyu, SONG Xiangkun, DAI Jianping, ZHU HongDesign and Research6-10,293Underground Personnel Safety Monitoring Technology and Device Based on Body Area NetworkGE Binbin, LUO Yulin, LIU Wenbin, YANG HuanDesign and Research11-184Structural Design and Optimization of the Pipe Section of the Coal Roadway Spiral Pipe Jacking MachinePENG Jun, LIU Yu, DUAN KaiyuanDesign and Research25-295Design of Shotcrete Robotic Arm for Underground Coal Mine RoadwayCAO MinxingDesign and Research30-346Top Coal Caving Control Method Based on Image SegmentationXIONG WuIssue Discussion35-417UWB and INS Integrated Localization Method for Mine Roadway Based on Improved Bayesian EstimationBAO Jianjun, XU Cheng, XING Zhen, ZHANG RongIssue Discussion42-47,568Evolution Law of Hard Roof Fracture in Different Mining Spaces of Coal MineBU Tengteng, YANG Shuhao, NING Jianguo, WANG JunIssue Discussion48-569Applied of New Materials in Explosion-proof Enclosures for Mobile Explosion-proof EquipmentLIU KaihuaIssue Discussion57-6210Automated Recognition Method for Decoupling Situation of Coal Unloading Car Based on Grey Wolf Optimization AlgorithmGUO Jiayu, CHEN Zhenyu, YOU TianrongIssue Discussion63-6711Research and Application of Straightening Scheme for Scraper Conveyor in Coal Mine Underground Working FaceQIN XiaoyunIssue Discussion68-7212Research and Practice of TBM Construction Technology in Deep Mine Rock TunnelGUO ZhiTechnical Practice73-7713Development of Automatic Centralized Grease Injection Electric Control System for Coal Winning MachineWANG CongTechnical Practice78-8114Research on the Design and Voltage Withstand Performance of the Housing of Mine-used Flameproof Power EquipmentZHANG Yong, YIN Yuxing, WANG Wanfeng, ZHANG SihanTechnical Practice82-85,8915Maintenance-free Technology for the Traveling Box of Coal Winning MachineZHANG LingfengTechnical Practice86-8916Development of Safety Monitoring System for Blind Alleys in Coal Mine ShaftsZHANG Ruiping, WANG Ruonan, GUO Gang, CHAI ChangTechnical Practice90-94 