山区高速公路地质选线实例研究

现今公路施工和运营中出现的诸多问题,这是由多方面原因造成的,在地质条件复杂的山岭地区进行路线设计中,“地质选线”好坏是控制成本的最主要因素之一1].结合成渝高速公路设计,归纳了目前山区高速公路设计中存在的典型地质问题,有区域稳定性问题、地形地质环境问题以及高速公路本身结构有关的工程地质问题.列举实例讲述了“地质选线”思想如何体现在工程设计中：“地质选线”要在全过程中加强比选工作,而不是一味整治,从而合理控制成本.

The Case Study of Mountainous Freeway Geological Route Selection

Nowadays many problems have emerged during the freeway construction and operation that are caused by many reasons.＂Geological Route Selection＂ good or bad is one of the most important factors for controlling costs in mountainous areas where geological conditions are complex for route design1].In this paper,take Chengyu expressway as an example,summarized some typical geological problems existing in the mountain highway,such as the regional stability issues,topographic and geologic environmental issues as well as geological problems related to structure of highway engineering.Provide examples about the ＂Geological Route Selection＂ ideas how embodied in engineering design：＂Geological Route Selection＂ means strengthening the route comparison during whole work,so as to control costs.