复合采动影响下边坡岩体变形机制的数值分析

在各类矿产资源的开采过程中，有许多矿区属地下与露天复合开采情况。依据采区的空间对应关系，两种采动影响域中的一部分相互重叠，致使其采动效应相互作用和相互叠加，从而组成一个复合动态系统，因此，边坡岩体变形机理更加复杂，与单一露天开采相比有较大的差异。然而，过去在处理此类问题时近似地按单一露天采动影响下的分析方法，结果与实际情况有一定差异。

Numerical analysis of the slope rock mass deformation mechanism under the combined mining effect

In the course of excavation of all kinds of mineral resource,there are many mining areas of combined underground and open pit mining.According to the relation between spatial position of workings,the two mining influencing realms are partially overlapping.It would result in that two kinds of mining effect interact and superimpose each other,constituting a system of dynamic state superimposition.As a result,the deformation mechanism of slope rock mass would be very complicated.It would differ from that of only open pit mining.However,this problem was treated merely as open pit mining in the past,so the result would differ from the actual situation.This paper studies the deformation and failure mechanism of slope rock mass for composite system combining underground and open pit mining on the basis of analysis of theory and living example,in order to provide theoretical basis for the continued excavating design and safety production as these mines.