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文中首先介绍了中国台湾省地质构造的大概情况。在此基础上提出了数学模拟的模式。选择北纬21°30′—25°30′,东经119°30′—122°30′范围作为模拟地区。整个模拟区假设分为三种不同介质构造。采用有限单元法,模拟在压应力作用下的层理分布和应力集中区。由于计算机内存所限,整个模拟过程化为二维平面应变模式。主要做了三方面工作:(1)最大主压应力方向与层理分布和应力集中区的关系;(2)差应力大小与层理分布和应力集中区的关系;(3)约束条件与层理分布和应力集中区的关系。本文主要结果是:(1)计算机数学模拟的层理分布与中国台湾省1978年出版的《台湾地体构造图》上绘制的层理分布十分吻合;(2)计算机数学模拟的应力集中区与台湾省强地震分布区基本一致。
The paper first introduces the general situation of geological structure in Taiwan Province of China. Based on this, the mathematical simulation model is proposed. Select the latitude 21 ° 30’-25 ° 30 ’and the longitude 119 ° 30’-122 ° 30’ east as the simulated area. The entire simulation area is assumed to be divided into three different media configurations. Finite element method was used to simulate the bedding distribution and stress concentration zone under compressive stress. Due to the limitation of computer memory, the entire simulation process is a two-dimensional plane strain mode. The main work done in three aspects: (1) the relationship between the direction of the maximum principal compressive stress and bedding distribution and stress concentration area; (2) the relationship between the differential stress size and bedding distribution and stress concentration area; (3) Relationship between distribution and stress concentration area. The main results of this paper are as follows: (1) The bedding distribution of mathematical mathematic simulation is in good agreement with the bedding distribution drawn on Taiwan’s Tectonics Map published by Taiwan Province of China in 1978; (2) The strong earthquake distribution in Taiwan Province is basically the same.