地表沉降与矿体倾角相关性研究

为了对比分析矿体上下盘地表沉降规律,评价矿体下盘岩体的稳定性,利用有限元分析软件ANSYS,建立有较高仿真度的三维数值分析模型,并对模型进行相关参数的赋值。模型中矿体倾角从0°至80°以间隔5°增加,计算了多个矿体倾角不同的工况。根据每个模型的计算结果,运用MATLAB对矿体倾角和地表最大沉降值进行最小二乘法4次方拟合,得出以倾角为变量的4次方多项式和最大沉降值随倾角的变化曲线图。研究结果表明,矿体上盘地表最大沉降值随着矿体倾角的增大而减小,矿体下盘地表最大沉降值随矿体倾角增大整体呈增大趋势。

CORRELATION BETWEEN GROUND SUBSIDENCE AND INCLINATION OF ORE BODY

In order to analyze and compare subsidence law of upper and lower side of ore body, evaluate the stability of rock mass of lower side,Using finite element analysis software ANSYS to establish higher simulation degree model, and assigning the model relative parameter values. In the model, the dip angle of ore body change from 0 degree to 80 degree with an interval of 5 degree, calculating multiple working conditions of different dip angle. According to calculated results of every model, least square fourth power fit the dip angle of ore body and maximum subsidence of ground by MATLAB, getting fourth power polynomial and curve diagram of maximum subsidence varies following the dip angle. The research results show that the maximum subsidence of group reduce along with the increasing of dip angle of ore body on the upper side and increase on the lower side.