1All source mine positioning:a new paradigm for intelligent coal mine positioning serviceHU Qingsong, QIAN Jiansheng, LI Shiyin, SUN Yanjing, ZHANG ZhenSpecial of Intelligent Control in Underground Space1-8,142Development and application of gas leakage channel detection device for gas extraction boreholeBA QuanbinAchievements of Scientific Research9-143Networked high-precision and high-stability array electronic belt scale instrumentZONG Hao, GE Zhiqi, HUA GangAchievements of Scientific Research15-20,424Classification coding of coal mechanical equipment information for full life cycle managementZHANG JianzhongAnalisys Research21-275Study on sealing technology and equipment of non-solidified paste materials for large diameter gas extraction boreholesTANG Weidong, LI Xiaowei, ZHOU DongAnalisys Research28-356Research on intelligent control algorithm of coal gangue sorting robot arm based on reinforcement learningZHANG Yongchao, YU Zhiwei, DING LilinExperimental Rrseareh36-427Research on improved PDR algorithm for underground personnel positioningSUN Yanxin, MAO Shanjun, SU Ying, YANG MengExperimental Rrseareh43-488Positioning algorithm of mine-used monorail crane locomotive based on strapdown inertial navigationGUO Liang, SONG Jiancheng, NING Zhenbing, WANG Mingyong, LIN Lingyan, HUANG JianqiExperimental Rrseareh49-54,869Research on leakage positioning method of underground gas extraction main pipeline based on transient modelZHANG Yibin, ZHANG Lang, ZHANG Huijie, LI Wei, LIU Yanqing, SANG CongExperimental Rrseareh55-6010Research on gas pre-drainage in coal roadway strips by combined ordinary drilling and directional drillingJI Pengfei, GUO Ying, ZHANG Lei, KONG Xiangguo, WANG Xu, ZHOU YuxuanExperimental Rrseareh61-6611Determination of reasonable length of wind-blocking curtain in 10201 working face of Bailongshan Coal MineCUI ChuanfaExperimental Rrseareh67-7312Application of adaptive local iterative filtering in gear fault identificationGUO Dewei, PU Yasong, JIANG Jie, YU Libin, MIN Jie, ZHANG WenbinExperimental Rrseareh74-80,9913Predictive control of high-power three-level PWM rectifier without weighting coefficientCHENG Weiwei, WU RuiExperimental Rrseareh81-8614Research on strong anti-misalignmemt methods of double-coupled LCL topology ICPT systemJIAN Yinwen, CHENG Zhijiang, CHEN Xingzhi, YANG HandiExperimental Rrseareh87-9315Research on air flow control device for excavating faceGONG Xiaoyan, CUI Xiaoqiang, LEI Kefan, ZHAO Kuan, LIU Hui, FENG XiongExperience Exchange94-9916Research on combined gas extraction technology of high and bottom extraction lane in high gas mineGAO Hong, YANG HongweiExperience Exchange100-10617Design of synchronous acquisition device for mine delayed seismic sourceCUI WeixiongExperience Exchange107-11118Design of mine-used intrinsically safe line array X-ray receiving boxFANG ChongquanExperience Exchange112-11719Design of vibration sensor for coal gangue identificationCAO Guanqiang, YU Rui, MENG Xiangtao, ZHAO Wensheng, LIU QingExperience Exchange118-122 