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用数值模拟方法研究了几何、力学条件不同的雁列构造模型的应力场,探讨了几何参数对应力场的影响。模拟结果表明,在几何参数不同的情况下,雁列构造中局部断层扩展引起的应力扰动场会对相邻构造产生作用。围绕断层扩展部位剪应力增量场呈八瓣式分布,平均应力增量场呈四象限分布。在较小范围内同时存在几个断层扩展区的情况下,围绕这个弱化区仍可形成上述增量场图案。
The stress field of geese with different geometrical and mechanical conditions was studied by numerical simulation and the influence of geometrical parameters on the stress field was discussed. The simulation results show that the stress perturbation field caused by local fault propagation in geese and tectonics will have an effect on the adjacent structures under different geometrical parameters. The increment field of shear stress around the fault extension is eight-flap distribution, and the average stress increment field is four-quadrant distribution. In the case where several fault extensions exist in a relatively small area, the above-mentioned incremental field pattern may still be formed around this weakened area.