1Electromagnetic positioning system of pipeline blockage clearing robotWEI Mingsheng, TONG Minming, ZHANG Chunya, XIA JingAchievements of Scientific Research1-42Design of a new type of acquisition instrument for mine pressure monitoringLI Panpan, LI Yunbo, XIAO Yong, ZHANG XiaoyuAchievements of Scientific Research5-83Design of mine-used wearable folded half-mode substrate-integrated cavity antennaCUI Jie, LIU Fengxue, ZANG Qiliang, XU ZhaoAchievements of Scientific Research8-124LiFeO4 battery power supply system for mine auxiliary transportation vehicleXIAO Nan, CHEN Zhongxia, CHANG Long, YU Zhihao, GUO HaiAchievements of Scientific Research12-165Shearer rocker swing angle detection device based on gravity accelerationZHAO MingAchievements of Scientific Research16-196Theory and key technologies for wireless magnetic induction sensor network in challenging environmentSHI Wenjuan, SUN Yanjing, LI Song, ZHAI Wenyan, TAN Zefu, CAI LiAnalysis Research20-257Hidden dangers in coal mine and their preventive measuresZHAO ZengyuAnalysis Research25-298Analysis of water directing styles of underground drainage systemSHE Ying, LUO Minghua, ZHANG HaifengAnalysis Research30-329Transmission power optimization of magnetic resonance coupling wireless power transmission systemTIAN Zijian, CAO Yangyang, FAN Jing, DU XinxinExperimental Research33-3710Experimental study on characteristics of acoustic emission for coal containing gas damaged evolution under loadingExperimental Research37-4111Research on an automatic drilling method for dual-arm drill rigZHANG Fuxiang, SHI WenjunExperimental Research42-4512Research of routing protocol for wireless sensor network in coal mine tunnel based on multi sink nodesLI Wanghuai, XIA XuExperimental Research46-5113Approach for remaining useful life prediction for mechanical equipment based on similarityWU Bin, LI Lu, SONG Jiancheng, QU Bingni, LI Hongwei, YANG JiankangExperimental Research52-5614Design of mine-used power supply with super wide input voltage rangeLIU YahuiExperimental Research57-6015Status evaluation of relay protector based on an improved fuzzy-gray methodMA Chunyan, GONG YingExperimental Research61-6416Research of online monitoring of high voltage cable insulation degradation of coal mineWANG Yongsheng, LI Xiaona, ZHAO Guodong, PENG Qixuan, LIANG RuiExperimental Research65-6917Dead-beat circulating current suppression method of underground UPS paralleling power supply systemWANG Ling, WU Tao, LI ZhizhongExperimental Research70-7418Underground monitoring image sharpening device based on embedded systemZHOU Xue, WU Fangda, YANG LiumingExperience Exchange74-7719Design of safety protection system of mine electric locomotiveLI JunhongExperience Exchange77-7920Digital remote monitoring system for long inclined shaft constructed by shield methodNIU YunpengExperience Exchange80-82 