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本文对1605年琼州大地震的构造应力场进行了三维光弹模拟实验,结果表明:(1) 在地下20公里左右,北东东走向的光村—铺前深断裂拦截北北西走向的塔市—演丰断裂的“拦截区”,是最大剪应力和主压应力的集中部位,是琼州大震的震源所在;(2) 因铅垂向外力作用的结果,应力矢量图中形象地显示出塔市—演丰断裂东侧(东寨港一带)一狭长地段呈“断块型倾侧式沉降”,光村—铺前断裂北侧(铺前湾、琼州海峡南侧一带)呈“断块型沉降”。实验结果与实际考察研究及其它有关资料的计算、分析结果相一致。
In this paper, a three-dimensional photoelastic simulation experiment was conducted on the tectonic stress field of the Qiongzhou earthquake in 1605. The results show that: (1) In the light of the north-east direction of Guangcun- The Fengfeng fault “intercept zone” is the focus of the maximum shear stress and the principal compressive stress and is the focal point of the Qiongzhou earthquake. (2) As a result of the vertical external force, the stress vector diagram vividly shows the tower In the east of the city-Fengfeng fault (in the vicinity of Dongzhaigang), a strip of fault-type dip settlement was formed in a narrow section. The northern side of Guangcun-Puqian fault (in front of Puqian Bay and south of Qiongzhou Strait) ". The experimental results are consistent with the actual investigation and study and other related data calculation and analysis results.