浏阳河大桥红层岩溶发育特征及其工程措施

Research on the Red Beds Karst Geological Character and Engineering Measures of Liuyang River Bridge

从地质环境、地层分布、岩性特征、物质组成等角度出发,通过地质勘探、室内试验、X-衍射等手段,对长沙市万家丽路高架之浏阳河大桥桥位处红层岩溶的形成机理和特征进行了研究。结果表明,红层岩溶主要受岩性、断裂构造和地下水等因素制约,受到溶蚀和风化的共同作用,属于溶蚀风化。分析了红层岩溶对工程建设的影响,提出了采用注浆处理措施,为工程设计提供了决策。

The characteristics and corrosion mechanism of red bed in of Liuyang River bridge of Wan Jiali Viaduct in Changsha are studied based on the geological environment,distribution of soil strata,lithology characteristics and the substance by means of explorating,testing,X-ray technique.The results show that the development and distribution of corrosion in red bed are mainly influenced by the lithology features,geologic structure and groundwater,it belongs to dissolution weathering under the joint action of dissolution and weathering.In this paper,the construction adventure of karst to track has been analyzed,and the measures of grouting treatment had been put forward.It supplies reference to the specific project of this section.