K形地质构造的非线性有限元模拟

本文根据K形构造形成演化的一般规律和相应的力学理论,建立了张性和压性断裂盆缘盆地中的K形构造的力学模型,并应用弹性大挠度板理论和非线性有限元方法,对所建立的张性和压性断裂盆缘盆地中的K形构造力学模型做了理论分析和数值模拟.计算结果与实验结果以及实际地质构造均较为一致.表明提出的模型假设是合理的,从而对K形构造形成的机理在力学上给出了恰当的解释.

Nonlinear Finite Element Analogy of K-shape Geological Structure

K-shape structure is a kind of geological structure recently proposed which is of importance to exploring for mine, but it is necessary to study theoretically the mechanical mechanism of its origin. In this paper the theoretical analysis and numerical analogy are made to the established mechanical models of K-shape structure in tensile and compressive fault basin, applying e-lastic large deflection theory of plates and nonlinear finite element method. The calculated results are relatively coincident with the experimental results and truthful geological structures. This shows the proposed hypothesis of the model is reasonable, thereby a right explanation about the mechanism of K-shape structure formation is given in the view of mechanics.