论文部分内容阅读
逆冲构造是地壳中即常见又重要的构造现象。对逆冲构造机制的研究是构造地质学家十分关心的问题,他们已从不同方面和不同角度对逆冲构造形成机制进行了研究和探讨。一般多采用力学分析方法和几何学分析方法。这些方法也都收到了很好的效果,但也有某些不足。由于岩石力学性质的复杂性,构造运动形式的多样化(包括弹性变形,粘弹性变形,塑性变形等等),用单纯的力学分析方法具有很多不定因素。力学理论是基于物质的一定力学性质的,在一定假设条件下是适用的。例如,用弹性力学理论不能来探讨塑性问题,对解决大变形无能为力。而地质上的构造变形是复杂的,且几乎都是大变形。如对褶皱来说,开始
Thrust formation is a common and important tectonic phenomenon in the crust. The research on the mechanism of the thrust formation is of great concern to the geologists. They have studied and discussed the formation mechanism of the thrust formation from different aspects and from different perspectives. Generally use mechanical analysis method and geometric analysis method. These methods have also received good results, but there are some deficiencies. Due to the complexity of rock mechanical properties, the diversification of tectonic motion forms (including elastic deformation, viscoelastic deformation, plastic deformation, etc.), simple mechanical analysis methods have many uncertainties. Mechanics theory is based on a certain mechanical properties of matter, under certain assumptions is applicable. For example, the theory of elasticity can not be used to explore the plasticity problem, and it can not help to solve the large deformation. Geological structural deformation is complicated, and almost all are large deformation. As for the fold, start