有限元法在中国南海及邻域区域稳定性研究中的应用

本文运用有限元法对南海及邻域现代构造应力场进行了初步的计算,结果表明:应力差(△a)的数值呈现有规律的分布,根据△a值的大小可以把本区划分为四个活动区:它们分别是烈活动区(△a>500bar)、强活动区(250bar<△a<500bar)、中活动区(12Sbar<△a<250bar)、弱活动区(△a<125bar)。其中南海北部及华南沿海地区属中活动区,这种环境对工程建设较为有利。

APPLICATION OF THE FINITE ELEMENT METHOD TO THE STUDY OF THE REGIONAL STABILITY OF THE SOUTH CHINA SEA AND ITS VICINITY

The modern tectonic stress field of the South China Sea and its vicinity has been computed by means of the finite element method. The conclusion is that the distribution of the stress difference (△a) appears as regularity. According to the value of. the △a, the study region can be dividid into four categories: extremely, very, moderately and weakly active. The northern South China Sea and the coast of South China are a moderately active region. It is suitable for engineering constructions.