金台铁路清潭头大桥桥址岩溶发育规律探讨

Karst Development Law of Qingtantou Bridge Site in Jinhua-Taizhou Railway

金台铁路勘测过程中,在以火山岩为主的台州清潭头村附近发现碳酸岩形成的岩溶。本文从地形地貌、地质构造、地层岩性、水文地质等角度进行分析,得出该类岩溶的形成原因。并总结出该类岩溶主要分布在断裂发育地段,且断裂性质对岩溶发育起控制作用,同时具有方向性强、分布范围小等特点。各类工程勘察设计过程中应对该类岩溶引起重视。

During the process of Jinhua-Taizhou Railway surveying,we found karst surrounding Taizhou Qingtantou Village,where the lithology of the strata was dominated by effusive rocks. This paper analyzed the origin of this kind of karst from the angle of landform,geologic structure,stratum lithology,hydrology geology and so on. It was concluded that the karst was mainly distributed in the fault developing zone,meanwhile,the fault properties played a regulatory role in the karst development and it had the characteristics of strong directivity,small distribution and so on. All kinds of projects should pay attention to this kind of karst in the process of survey and design.