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1.概况成渝高速公路是国家和四川省“七五”和“八五”期间重点公路建设项目,是国家规划的十二条国道主线之一。全线长340.2公里,是四川省第一条全封闭、全立交的高速公路。成渝高速公路西段起于成都五桂桥,止于隆昌县商家坡,全长225.47公里。其间穿越平原、山岭、丘陵等不同地貌单元,地层,岩性变化频繁。在勘察设计及施工中曾遇到膨胀土,软基,滑坡等多种不良地质体。
1. Overview Chengdu-Chongqing Expressway is a key highway construction project of the state and Sichuan Province during the “75” and “85” periods. It is one of the 12 national highway projects planned by the state. 340.2 km across the board, Sichuan Province is the first fully enclosed, all-interchange highway. Chengdu-Chongqing Expressway from the western section of Wuqiqiao in Chengdu, Longchang County, only commercial slopes, a total length of 225.47 km. In the meantime, there are frequent changes in strata and lithology through different landforms such as plains, mountains and hills. In the survey and design and construction have encountered expansive soil, soft foundation, landslides and other bad geological body.