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在数值分析与实际变形分析的基础上，探讨复合开采影响下岩体内部的应力变化特点．由于在地下与露天复合开采作用下，岩体变形的叠加作用机制与变化特征取决于2种采矿的各自开挖量；当边坡角较小时，岩体变形更多地表现出地下采动特性，而在相同地下采动影响下，随着露天边坡角增大，其相应的变形范围和变形深度均增大；2种开挖量大小直接影响各单元体主应力矢量大小和方向，并且其中每个开挖量的变化都将使岩体产生不同的破坏特点和滑移机制．
On the basis of numerical analysis and actual deformation analysis, the characteristics of stress changes in rock mass under the influence of compound mining are discussed. Due to the combination of underground and open-air mining, the superposition mechanism and variation characteristics of rock deformation depend on the excavation volume of each of two kinds of mining. When the slope angle is small, the deformation of rock mass shows more underground mining characteristics , While under the influence of the same underground mining, the corresponding deformation range and deformation depth increase with the increase of open slope angle. The excavation size directly influences the size and direction of main stress vector of each unit body Each change in excavation volume will cause different failure characteristics and slip mechanism of rock mass.