川南岩溶地区高速公路地质选线

Geological Route Selection of Expressways in South Sichuan Karst Area

四川川南地区岩溶水文地质条件复杂,对高速公路工程建设影响较大。依据岩溶发育规律和特征合理布设路线方案,对于减少工程病害、节约经济成本、保护生态环境意义重大。以叙威高速为例,分析了岩溶发育条件、规律、发育特征及影响因素,应用岩溶地区地质选线的一般原则,通过工程实践总结了岩溶地区地质选线要点,为川南岩溶地区高速公路选线提供借鉴。

The karst hydrological and geological conditions in the southern Sichuan region are complex and have a great impact on highway engineering construction.A reasonable route plan based on karst development rules and characteristics is of great significance for reducing engineering diseases,saving economic costs,and protecting the ecological environment.Taking the Xuwei Expressway as an example,the karst development conditions,laws,development characteristics,and influencing factors are analyzed.The general principles of geological route selection in karst areas are applied,and the main points of geological route selection in karst areas are summarized through engineering practice.The line provides lessons for route selection of southern Sichuan region.