不同应力环境下断层地区构造应力场的数值模拟

Numerical Simulation of Tectonic Stress Field in Fault Areas Under Different Stress Conditions

构造应力场通常为造成构造运动的构造应力场,或由构造运动产生的地应力场,是地壳中一定范围内的瞬时应力状态。断层附近以及末端构造应力场的研究已受到人们的重视,其原因在于断层末端延伸被阻,这往往会导致断层末端的应力集中从而引发地震。断裂构造对应力场有显著影响,在断层附近,发生应力的大小和方向会导致不同程度的变化,通过数值模拟,可以研究构造作用下断层构造形成后,受现代构造应力场作用下断层的破坏情况及其应力分布规律。

Tectonic stress field is usually the tectonic stress field that causes tectonic motion, or the ground stress field generated by the tectonic movement. It is the instantaneous stress state in a certain range of the crust. The study of the stress field near the fault and the end of the fault has been taken seriously. The reason is that the end of the fault extension is blocked. This tends to result in stress concentrations at the ends of the fault that can cause earthquakes. The fracture structure has a significant influence on the stress field, near the fault, the magnitude and direction of stress can lead to varying degrees of variability. Through numerical simulation methods, the formation of fault structure under tectonic action can be studied. Under the action of the modern tectonic stress, the fracture of the fault and its stress distribution regularities.