1Developing trend and key technologies of network technology of mine Internet of thingsZHAO Xiaohu, ZHANG Kai, ZHAO Zhikai, HUO YuColumn of Top-down Design of Mine Internet of Things1-72Calculation method of joint elongation of steel cord conveyor beltLI Xianguo, ZHANG Can, ZHANG Lei, SHEN Lifang, JIANG HangqiAchievements of Scientific Research8-133Development of automatic test platform of electro-hydraulic control system of hydraulic supportLI JunshiAchievements of Scientific Research13-194Detection method of instantaneous coal quantity of belt conveyor based on laser scanningGUAN BinghuoAchievements of Scientific Research20-245Research on volume measurement method of coal on belt conveying based on machine visionLI Ping, REN AnxiangAchievements of Scientific Research24-296Research on mine personnel positioning method based on time rangeSUN ZhexingAnalysis Research30-337Application prospect analysis of new technologies of mine-used belt conveyorXIAO Huaming, SUN Shijiao, CAO LianminAnalysis Research34-398Research on equipments cooperative advancing control technology on fully-mechanized coal mining face and two-roadwaysWANG FengAnalysis Research39-439Analysis of electric field distribution at air gap defect and its influencing factors in mine-used high-voltage cable insulationYANG Shuo, GENG Pulong, QU Bingni, SONG Jiancheng, LIU Jucai, TIAN MinAnalysis Research44-5110Reliability analysis of traction unit of electrical haulage shearerGE HongbingAnalysis Research51-5611Research on over-discharge hydraulic buffer system for hydraulic driven hoistTANG Youliang, ZHANG JinAnalysis Research57-6112Texture feature extraction of coal-rock image based on variogram and local variance imageHUANG Lei, GUO ChaoyaExperimental Research62-6813Research on formation process of arc grounding over-voltage in mine power supply systemLIU Jucai, GENG Pulong, QU Bingni, SONG Jiancheng, LUO Chao, LI Xin, TIAN MinExperimental Research69-7414Mine personnel fusion location systemWU Jingran, CUI Ran, ZHAO Zhikai, YOU Peng, ZHANG LeiExperimental Research74-7915Stable sensorless control for permanent magnet synchronous motor of mine-used electric locomotive at low speed stageZHU Longji, HUANG QiExperimental Research80-8516Location and recognition method of digital tube of digital display instrument under complex environmentZHANG Li, LIU Bin, GUI Junguo, JIN Yunyu, ZHANG Cheng, DU Bing, LIU BoExperimental Research85-8917@@8918Construction and implementation of platform for intelligent mineQUE JianliExperience Exchange90-9419Classification and calculation of the best escape route of coal mine based on Dijkstra algorithmTONG Xing, YUAN Shuaiqi, FANG Weipeng, MA JinyuExperience Exchange94-9920Training system for coal mine full-hydraulic drilling rig based on virtual reality technologyWANG Tianlong, QIAO Jie, PENG Tao, YAO Yafeng, LIU RuiquanExperience Exchange100-104 