淮南大通浅覆盖岩溶区塌陷分布及土地利用可行性

通过地质调查、钻探、物探等方法对淮南大通浅覆盖岩溶区岩溶塌陷的分布特征及诱因进行了分析,结果表明,大通浅覆盖岩溶区岩溶塌陷主要分布于下伏奥陶系马家沟组地层之上,以及构造发育区和松散层粉土含量较高区,岩溶塌陷主要受岩石溶蚀程度、强烈地下水动力条件及松散层厚度、成分等控制。结合岩溶塌陷发育特征及场地具体条件,探讨了大通浅覆盖型岩溶区土地利用的可行性,为土地综合开发利用提供参考。

Karst collapse distribution and land-use feasibility of shallow overburden type karst area in Datong District,Huainan City

Karst collapse distribution characteristics and cause of shallow overburden type karst area in Datong District,Huainan City were analyzed based on geological survey,drilling,geophysical exploration,etc.The results show that karst collapse of shallow overburden area mainly distributes in the region where structure develops and the silt content is higher.Karst collapse of shallow overburden area is above the Ordovician Majiagou Formation.Karst collapse is obviously controlled by the dissolution degree of the rock,strong groundwater dynamic conditions,thickness and composition of unconsolidated layers,etc.The land use possibility of shallow overburden type karst area in Datong District was then discussed in consideration of the development characteristics of karst collapse and specific geological conditions of site.This study provides a reference for the integrated land development and utilization.