皂市水库诱震地质条件及危险性初评

GEOLOGICAL CONDITION OF INDUCED EARTHQUAKE AND THE PRIMARY RISK ESTIMATION OF ZAOSHI RESERVOIR IN HUNAN PROVINCE

对湖南皂市水库库区及区域地壳运动、沉积建造以及浅部岩溶、古岩溶及深部岩溶作用作了较深入的研究与探讨,对与库区关系较密切的断裂及其活动性进行了考察,否定了沿主要库段南缘分布的袁公渡断裂.在上述工作基础上,认为水库区不存在诱发较大地震的地质条件,即使诱发较小有感地震,对大坝亦无影响。

In this paper, the crustal motion and sedimentary formation of the reservoir area are discussed. Karst palaeo-karst and deep karst are also studied and approached. After investigated the relevant faults and their activities in the reservoir area, we do not think that Yuangondu fault is distributed along the southern side of the reservoir area. According to the above-mentioned study, we consider that there isn't any geological conditions for inducing big earthquake, if some small earthquakes occur at the reservoir area, the darn is not affect by them.