摘要
采用数值模拟计算,通过对覆岩移动过程的模拟研究,指出了地表沉陷由岩体变形破坏到岩体密实沉陷的发展过程,揭示了岩体密实沉陷延续是引起地表残余沉陷变形的机理;通过对岩体密实阶段地表沉陷分布规律的模拟研究,证实地表残余变形可以用概率积分法进行预计。根据数值模拟及现场实测数据,确定了长壁开采条件下地表残余沉陷变形的概率积分法预计参数。
Overburden strata movement process was studied by numerical simulation, the results showed that surface subsidence expe-rienced the process that from rock mass deformation to rock mass subsidence, it revealed that rock mass subsidence development was reasons that induced surface residual subsidence deformation.Surface residual deformation could be predicted by probability integral method according numerical simulation of surface subsidence distribution law during rock mass subsidence stage.On the basis of numer-ical simulation and measured data, predicting parameters of probability integral method of surface residual subsidence deformation with long wall mining situation were confirmed.
出处
《煤矿开采》
北大核心
2016年第2期29-32,共4页
Coal Mining Technology
基金
国家自然科学基金项目(51474129)
关键词
残余沉陷变形
数值模拟
沉陷过程
预计参数
长壁开采
residual subsidence deformation
numerical simulation
subsidence process
predicting parameters
long wall mining
