在软土地区修建高等级公路,由于路堤高,常因地基稳定性不够或沉降过大,使道路发生变形、破坏,不仅丧失道路本身的功能,而且使沿线设施及环境也受到危害。因此,软土地基作为一个重大的工程地质问题,在高等级公路的设计与施工中是应该尽量避免的。当路线被迫不得以通过软土地基路段时,必须在调查、 Due to the high embankment, the high-grade highways built in soft soil areas often cause the deformation and destruction of the roads due to insufficient stability or subsidence of the foundations. They not only lose the functions of the roads themselves, but also harm the facilities and environment along the roads. Therefore, as a major engineering geological problem, soft soil foundation should be avoided in the design and construction of high-grade highways. When the route was forced to pass through soft ground sections, it must be investigated,