摘要
从采矿源头出发,研究掌握高强度开采损伤传导机理,进而研发采动损伤控制与修复技术,是解决我国西部矿区生态损伤程度高与修复难等问题的关键。基于此,提出采动损伤能量指标及采动损伤场量化采动损伤程度和范围,给出了采动损伤场临界能量值的计算模型。结合采动覆岩"三带"分区特征,基于空间守恒建立了采动损伤分区耗散传导模型,研究得出了开采源头损伤在垮落带、裂隙带、弯曲下沉带传递过程中的耗散系数,提出了地表采动损伤量计算方法。依据采动损伤分区耗散模型提出了高强度开采覆岩"两带"结构转化为"三带"结构的垮落带与离层裂隙带注浆技术及注浆量的计算方法。最后通过上湾矿12401大采高工作面的应用与实测结果证实了本文模型的可靠性。
In view of the problems of high ecological damage and difficult restoration in western mining areas of China,it is essential to study and master the damage conduction mechanism of high intensity mining and develop mining damage control and repair technology from the source of the mining.Based on this,the energy index has been put forward to quantify the degree and range of mining damage,and the calculation model of critical energy value of mining damage field has been given.Combined with the characteristics of"three zones"of mining overburden,the zonal dissipative conduction model of mining damage has been established based on conservation of mining space.The dissipation coefficients of mining damage in caving zone,fracture zone,and bending subsidence zone have been obtained.A method for calculating surface damage has been proposed.According to the zonal dissipative model of mining damage,the grouting technology and calculation method of grouting amount in caving zone and separation fracture zone of overburden rock have been put forward.This technology can transform from"two zone"structure to"three zone"structure in high intensity mining.Finally,the reliability of the model has been verified by the application and the measured results of high working face 12401 in Shangwan Coalmine.
作者
李全生
张村
LI Quansheng;ZHANG Cun(State Key Laboratory of Water Resource Protection and Utilization in Coal Mining,Beijing 102209,China;National Energy Group Co Ltd,Beijing 100011,China;School of Energy&Mining Engineering,China University of Mining and Technology-Beij ing,Beij ing 100083,China)
出处
《采矿与安全工程学报》
EI
CSCD
北大核心
2021年第1期1-8,共8页
Journal of Mining & Safety Engineering
基金
国家自然科学基金项目(51874312)
北京市自然科学基金项目(8212032)
煤炭开采水资源保护与利用国家重点实验室自主研发项目(WPUKFJJ2019-15)。
关键词
西部矿区
采动损伤
传导特征
分区耗散
减损开采
western mining area
mining damage
conduction characteristics
zonal dissipation
detraction mining
