邢东矿充填开采智能化技术及工程实践

Intelligent technology and engineering practice of backfilling mining in Xingdong Mine

充填开采智能化符合煤矿绿色开采和智能开采的行业发展趋势及需求,但目前对充填开采智能化关键技术缺乏系统性研究和实际工程应用。针对该问题,以固体充填开采面智能化升级为核心,以充实率智能控制为首要目的,以建设智能充填矿井为目标,系统研究了充填开采智能化关键技术:煤基固废智能预处理及投放控制技术;结合矿床实时测控、排矸速度智能控制、混合分选控制的井下智能跳汰分选技术;基于多源煤基固废实时监测和精准反馈调控的多源煤基固废归集储运技术;集智能充填监测、流量智能控制、充填液压支架和工作面电液控于一体的固体智能充填开采技术。通过各充填开采智能化关键技术的联动配合,邢东矿形成了以煤基固废预处理、煤矸井下分选、多源煤基固废储运及固体充填采煤为核心的智能充填矿井。工程实践结果表明:应用充填开采智能化技术后,智能充填工作面能力大幅度提高,工作面产量由月产3.6万t增加至月产7.2万t,每班人员减少8~10人,1个循环作业时间减少约2.5 h,效率提高约50%,全面解决了煤基固废排放问题。

Intelligent backfilling mining meets the industry development trend and need of green and intelligent mining in coal mines.But there is currently a lack of systematic research and practical engineering applications on key technologies of intelligent backfilling mining.In order to solve this problem,with the core of intelligent upgrading of solid backfilling mining faces,the primary goal of intelligent control of backfilling rate,and the goal of building intelligent backfilling mines,the key technologies of intelligent backfilling mining are systematically studied.The technologies include intelligent pretreatment and delivery control technology for coal-based solid waste,the underground intelligent jigging separation technology combined with real-time monitoring and control of ore deposits,intelligent control of waste discharge speed,and mixed separation control,the multi-source coal-based solid waste collection,storage and transportation technology based on real-time monitoring and precise feedback control of multi-source coal-based solid waste,and the intelligent solid backfilling and mining technology which integrates intelligent backfilling monitoring,intelligent flow control,backfilling hydraulic support,and electrohydraulic control of the working face.Through the linkage and coordination of various key intelligent backfilling mining technologies,Xingdong Mine has formed an intelligent backfilling mine with coalbased solid waste pretreatment, underground coal gangue separation, multi-source coal-based solid waste storage and transportation, and solid backfilling mining as the core. The results of engineering practice show that the capacity of intelligent backfilling working faces has been greatly improved after the application of intelligent backfilling mining technology. The working faces' output increases from 36 000 t per month to 72 000 t per month. The number of personnel per shift is reduced by 8-10. The time of one cycle operation is reduced by about 2.5 h, and the efficiency increases by about 50%. The problem of coal-based solid waste discharge has been comprehensively solved.