15G communication technology and its application conception in coal mineHUO Zhenlong, ZHANG YuanhaoAnalysis Research1-52Research on coupling law of gas and coal spontaneous combustion in goaf of high gas mineXING ZhenAnalysis Research6-11,203Research on gas drainage drilling parameters and nitrogen injection for fire prevention in goafCUI ChuanfaAnalysis Research12-204Research on application of blockchain technology in mine Internet of thingsQIN Xiaowei, WANG Libing, WANG Lei, LI Jingzhao, ZHANG XiaoboSpecial of Mine Internet of Things21-265Automatic semantic annotation method for mine Semantic Web of thingsZHANG Nan, XIE Guojun, YE Qing, ZHAO XiaohuSpecial of Mine Internet of Things27-336Coal mine information comprehensive perception and intelligent decision systemLI Tengfei, LI Changyou, LI JingzhaoSpecial of Mine Internet of Things34-37,547Intelligent multi-node communication strategy of mine cyber-physical systemMA Yangjin, FU Maoquan, XU Zhi, LI JingzhaoSpecial of Mine Internet of Things38-42,488Optimization of PWSN transmission performance on coal mining faceFANG Zuhao, ZHAO Xiaohu, WANG Haibo, WANG JingjingSpecial of Mine Internet of Things43-489Relay selection in wireless cooperative networks based on energy collection technologyZONG Zhengxue, DING Enjie, LIU Yan, ZHANG Bingxin, ZHAO DuanSpecial of Mine Internet of Things49-5410Application of principal component-Fisher discrimination model in grade prediction of coal and gas outburstCHEN Lian, YUAN Mei, GAO Qiang, XU Shiqing, CHEN Wen, LI Xinling, LONG NengzengExperimental Research55-6211Research on improved region division method in underground WLAN location fingerprints positioningSONG Mingzhi, QIAN Jiansheng, HU QingsongExperimental Research63-68,9912Coal-gangue image classification methodRAO Zhongyu, WU Jingtao, LI MingExperimental Research69-7313Research on load adaptive impedance matching of magnetic resonant wireless power transfer systemBAI Jingcai, FAN Zheng, WANG Guozhu, DU ZhiyongExperimental Research74-7814Application of comprehensive exploration technology for water-hazard prevention in coal mine working faceJI Qianhui, HAO Shijun, WANG Cheng, LIU WeiweiExperience Exchange79-8315Gas control technology of directional high-level long borehole at upper cornerBAI Gang, YANG Zhong, DUAN HuijunExperience Exchange84-8816Monitoring system for accurate coalbed methane drainageLIU LeiExperience Exchange89-9417Research on dynamic simulation of coordinated development of coalbed methane and coal in typical mining areasXU HualongExperience Exchange95-9918Research on vibration signal prediction of coal mine machineryXIAO Yajing, LI Xu, GUO XinExperience Exchange100-10419Design of coal mine safety risk prevention and control and early warning systemXU XiaojianExperience Exchange105-108 