Key technologies and demonstration of unmanned steeply inclined short-wall fully mechanized top-coal caving intelligent mining

LI Haodang; LIU Qing; GU Bin; YAO Yupeng; SUN Yanyi; TIAN Xin; XIONG Wu; LIU Kunlun; BAO Xinping; WU Junfei; YAN Ruibing

doi:10.12438/cst.2025-0778

Abstract：Since the 14th Five-Year Plan,my China's coal mine digital intelligence technology has developed rapidly,especially in thin coal seam mining.However,the unmanned intelligent mining technology of steeply inclined short-wall fully mechanized caving is still in the exploratory stage,and there is no mature application demonstration.In order to accelerate the promotion of digital intelligence techno-logy to empower the upgrading of the coal industry,based on the characteristics and advantages of steeply inclined short-wall fully mech-anized caving mining in Xinjiang Wudong Coal Mine,5 key core technologies and 1 management and control mode of steeply inclined short-wall fully mechanized caving intelligent mining are proposed.The five key core technologies include:a single drum coal mining ma-chine"centimeter+millisecond"level precise planning and space-time navigation system based on the coal seam occurrence conditions and mining characteristics of the working face;an autonomous coal-laying model driven by behavioral data and a closed-loop control sys-tem based on image-based coal gangue self-identification to solve the complex coordination mechanism of short-wall working faces and the difficulty of parameter control;a digital twin system for real-time mapping and simulation of the physical scene of the entire working face to solve the problems of complex underground environment and fragmentation of equipment status data;the first domestic full-face video splicing software for steeply inclined short-wall working faces to solve the problems of insufficient feedback information and poor production guidance for remote intervention,which realizes the provision of ground intervention physical scenes and holographic interac-tion with digital twins;a working face rack collaborative control system and a ground operation island remote centralized control system that focus on the problems of complex equipment,difficult equipment coordination,decentralized control logic between multiple equip-ment underground,and high frequency of remote intervention in steeply inclined coal seams,to achieve centralized control of multiple devices.One management and control mode includes one decision-making control platform,one intelligent equipment group,and one pro-fessional operation and maintenance team to realize a new platform-based flat management and control mode.Relying on five key core technologies and one management and control model,a demonstration working face for the intelligent and normalized operation of steeply inclined short-wall fully-mechanized mining in the Wudong Coal Mine in Xinjiang was built,providing a technical paradigm and practical model for the universal digital and unmanned mining in my country's coal mines.