论文部分内容阅读
若其他条件相同,金属矿床的露天和地下联合开采会由于露天坑和地下采场的相互影响及其构筑工艺,产生极其复杂的地质力学变化过程。岩体的质变会伴之以量变。例如,在露天矿边帮内地下采场的存在会引起边坡内岩体应力状态的影响区尺寸增大0.5～1倍,而且如果房间矿柱处在露天边坡的影响区以內,房间矿柱的最大剪应力增大30～40％。同样,岩体的物理-力学性质、水物理性质、
If other conditions are the same, the open-pit and underground joint mining of metal deposits will produce extremely complicated geomechanical change process due to the interaction between open pit and underground stope and their construction process. The quality of rock mass will be accompanied by quantitative change. For example, the existence of underground stopes in the open pit side can cause the size of the affected area of rock mass stress state within the slope to increase by 0.5 to 1 times. If the room pillar is within the influence area of the open slope, The maximum column stress increases by 30 to 40%. Similarly, the physico-mechanical properties of rock mass, water physical properties,