1Research on Semi-active Vibration Control Method of Cutting Arm Power Absorber for Coal Mine Excavation EquipmentBAO Zhenxing, LI Ang, GUO ZhifuDesign and Research1-62Research on Digital Twin Technology for Intelligent Coal Sampling and Preparation SystemWU ZengliDesign and Research7-9,133Research on Trajectory Tracking of Unmanned Dump Trucks in Open-pit MinesJIANG Jie, GUO Mingxiang, SONG Yanbing, GAO Ling, XU Kui, ZHANG JinzhuDesign and Research10-134Research on Abnormal Behavior Detection Algorithm for Cage Personnel Based on Machine VisionWANG Zhe, PAN Dongya, LI Qing, FU Zhe, ZHANG Bin, ZHAN YuhengDesign and Research14-18,215Improvement of Loading Structure Design for Small Diameter Spiral Drum in Thin Coal LayerTAO RongDesign and Research19-216Design of Automatic Temperature Control System for Nitrogen Heat Exchange Device Based on PID TechnologyWANG LinglongDesign and Research22-257Application of 5G Technology for Remote Control of Transportation System in Wuhai Energy Coal Mine Working FaceZHANG JialinIssue Discussion26-318Optimization of Cutting Parameters for Small Diameter Rollers Based on Cutting PerformanceGUO DaiIssue Discussion32-359Stability Analysis of the Rotating Operation of the Anchor Protection Cooperative Machine in the Comprehensive Excavation RoadwayHAN Xiaolong, ZHOU Wei, YIN KeqiangIssue Discussion36-4010Research and Application of Wireless Roof Pressure Sensor for Coal Mines Based on WAVEMESH Self-organizing NetworkTIAN ShuaishuaiIssue Discussion41-4611Fault Diagnosis of Multi-rope Friction Hoist Based on Stress Wave TechnologyLI Huijie, WANG Yangyang, LIU Gang, ZHANG Xiaoyu, ZHANG WeiIssue Discussion47-51,5712Application of Hydraulic Support Automation Monitoring SystemSUN ZhiyongIssue Discussion52-5713Positioning Control Analysis of Hydraulic Support Push CylinderLI YuTechnical Practice58-6214Research and Application on Improving the Quality of Internal Wire Crimping in Coal Winning MachinesWANG GongbaoTechnical Practice63-6615Optimization Design of Hydraulic Driven Portable Anchor Rod Cold Cutting ToolZHANG JiewenTechnical Practice67-7016Comprehensive Treatment Technology and Application of Scale in Coal Mine Pump StationCHEN ChengTechnical Practice71-7417Development and Application of Communication Interface Protocol Monitoring Software for Coal Mine Electromechanical EquipmentLIU YongTechnical Practice75-7818Development of an Intelligent Screw Monitoring System for Coal Winning MachinesSU LonglongTechnical Practice79-81 