1Decision Model for Workplace Relocation Based on Behavior AnalysisYAO Yupeng, XIONG WuDesign and Research1-72Research on High-efficiency Gas Extraction Technology Using Ultra Large Diameter Boreholes in Soft Coal SeamsWANG WeiDesign and Research8-12,253Multi-objective Optimization of a New Bilateral Halbach Magnetic CouplerZHU Lifang, CHENG Gang, SONG DonghuaDesign and Research13-184Optimization and Performance Simulation of the Cutting Plate Structure of the Anchor Excavator Integrated MachineLIU Xinyu, CHANG Yinghui, CHEN Mingjun, ZHANG XiaofengDesign and Research19-255Research on Flexible Automatic Assembly Process and Equipment Development of Mining Pilot Valve SeatXIE SaiDesign and Research26-306Design of Coal Flow Stress Sensor for Underground Transportation Based on RV1126WANG Xueming, LIU FengDesign and Research31-367Design and Implementation of Multi-functional Interface for Intelligent Mining Signal ConverterLIN EnqiangIssue Discussion37-418Trackless Transformation and Equipment Selection of Auxiliary Transportation in Shaft Coal MineHAN FeiIssue Discussion42-47,529Research on the Microstructure and Properties of Fe-based Alloy Coatings Under High-power LasersZHANG Jun, WANG Jingyu, YUAN Haoyu, ZHUANG Lili, HUO Fujun, REN ZitingIssue Discussion48-5210Modal and Harmonic Response Analysis of the Drilling Arm of JMZ Airborne Anchor Drilling RigCHEN Muran, TENG Wenxiang, FEI Shuhui, TAO Yongqin, WANG ChengIssue Discussion53-6211The Relationship Between the Minimum Oil Film Thickness and Axial Internal Clearance of Double Row Tapered Roller Bearings in the Cutting Section of a Coal Winning MachineKAN JinbiaoIssue Discussion63-6712Detection of Mine Water Supply and Drainage Pipe Rupture Based on Improved YOLOv5GAO Yongjun, GUO Yunfei, TANG WenjieIssue Discussion68-7313Application of Low Specific Pressure Type Anchoring Equipment in Huangling No.2 Coal MineZHANG DongbaoTechnical Practice74-7714Fault Diagnosis Method for Mining Explosion-proof Motor Bearings Based on Improved SVMWANG YiqingTechnical Practice78-8215Simulation Study on the Influence of a U-shaped Damping Pad on the Vibration of the Coal Winning Machine's Long ScrewZHENG Zhuping, LÜ Xiao, WEI HongqingTechnical Practice83-85,9016Application of Passive Online Ash Meter in Ximing Coal Preparation PlantLIU YongguangTechnical Practice86-9017Research on the Influencing Factors of Electric Mining Truck Power Battery Failure Based on Exploratory Data AnalysisZHENG Mingya, ZHENG Xiaodong, WANG Weiwei, QUE Zhonghao, TAO Haibao, PENG QianTechnical Practice91-95 