摘要
本文叙述了该区17年来出现的地裂现象和特征及地震活动情况。从地裂发生与地震活动的时间序列、空间分布以及地裂与地震孕育的地质构造背景等方面对地裂与地震活动的关系进行了统计、分析。结果认为,雷州半岛地裂与地震活动无关,不属构造成因地裂,而是干旱、暴风雨、滑坡等营力引起的。但雷州半岛大面积分布玄武岩风化壳,其土力学性质可以形成相当规模的干裂而破坏和影响建筑物,因此,在工程建设时应予注意。
The phenomenon and the characteristics of the ground fracture and the situation about earthquake activity which occurred for 17 years in Leizhou Peninsula are reviewed in this paper. The relations between ground fracture and earthquake activity are counted up and analysed from the sides of time series and space distribution between ground fracture and earthquake activity, background of geologic structure breeded in grouud fracture and earthquake. The result shows that there isn't any relationships between ground fracture and earthquake activity in Leizhou Peninsula and it doesn't belong to tectonic cause fracture, but it caused by exogenic force, such as dry,rainstorm, slide and so on. As a lot of area of Leizhou Peninsula are distributed in the weathering crust of basalt and its soil mechanics characteristics may be developed into a considerable scale of drying crack, thus destroying and impairing building. Therefore, we should pay attention to these problems during the engineering construc-tion.
出处
《华南地震》
1989年第3期50-55,共6页
South China Journal of Seismology
