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采动断层活化是采矿科学中的重要研究课题,以往的研究没有揭示断层面几何形态对它的影响.针对地质断层面的分形性质,构造了自仿射意义下的分形曲线及含有这种分形性质断层面的地质采矿模型,用数值方法模拟地下开挖引起分形断层面活化的现象,研究和总结了分形断层面对采动岩体沉陷的影响规律.研究表明,采动断层活化具有明显的分形界面效应;采动断层剪切滑移力学行为与其分形维数是相关的,不同分形维数的断层面采动后,导致其附近岩体中的应力场和位移场也不同.
Mining fault activation is an important research topic in mining science. Previous studies did not reveal the influence of fault geometry on it. Aiming at the fractal properties of geological fault plane, a fractal curve in self-affine sense and a geological mining model containing such fractal fault planes are constructed. Numerical simulation of the phenomenon of sub-surface fault activation caused by underground excavation is studied and summarized. Influence of fractal faulting on the settlement of mining rock mass. The research shows that the fracturing activation has obvious fractal interface effect. The shear slip shear mechanics behavior is related to its fractal dimension, and the fractal dimension of the mining fractures with different fractal dimensions leads to the stress in the nearby rock mass Field and displacement field are also different.