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地形地质选线是近年来公路建设中的思想,往往是采取避让不良地质的措施。避让固然是最直接的措施,但避让有时存在没有展线的空间,或由于山区公路路线位置的惟一性而必须经过有地质灾害隐患的区域时,公路路线更应结合地形条件,充分考虑地质环境条件,采用合理的公路选线设计方法,避免由于公路工程建设而引发新的地质灾害,减少公路后期的水毁及养护的难度。本文通过对云南某典型河谷地区公路调查分析,得出:该公路选线设计由于对该地区特殊的地质环境考虑不足,以传统的公路选线的思路进行设计,从而导致了后期公路水毁及沿线地质灾害的频发。基于环境选线的理念,本文提出路线-地质环境的适宜性理念,这对公路地质灾害的防治有很强的指导意义。
Topographic and geologic route selection is the thought in highway construction in recent years, and it is often taken measures to avoid adverse geology. Avoidance is certainly the most direct measure, but avoidance sometimes has no space for exhibition lines, or due to the uniqueness of the location of mountainous road routes that must pass through areas with geological disasters, the road route should be combined with topographical conditions and give full consideration to the geological environment Conditions, the use of rational design of road alignment to avoid due to the construction of highway projects caused by new geological disasters, reduce the water damage and maintenance of the latter part of the road. Based on the survey and analysis of the highway in a typical valley in Yunnan Province, the paper draws the conclusion that the route selection design of the highway is not designed with the special geological environment in this area and is designed by the traditional road alignment, Geological hazards along the frequency of. Based on the concept of environmental alignment, this paper proposes the idea of the suitability of the route - geological environment, which has a strong guiding significance for the prevention and treatment of highway geological disasters.