山区高速公路总体设计与工程实践

Overall Design and Engineering Practice of Mountainous Expressway

广东是多山地区,特别是粤东西北等山区地形地质条件复杂。通过广东省多个山区高速公路项目的勘察设计及建设管理实践,分析了山区高速公路的总体设计要点。在总体设计过程中,应进行充分的路线多方案比选论证,除经济指标外,建议将工程地质条件、路线安全性等作为比选的重要因素;在具体设计阶段,应结合地形条件开展平纵横的协同设计;设计中还应充分加强与地质勘察工作的衔接。在总体方案研究过程中,结合重要工点的勘察成果,尽可能提前绕避不良地质工点,并合理确定总体处治方案。

There are lots of mountainous areas in Guangdong,especially the mountainous terrain and geological conditions in the north,east and west of Guangdong.Through survey,design and construction management practices of many mountainous expressway projects in Guangdong Province,the main points of the overall design of mountainous expressways have been analyzed.In the overall design process,adequate comparison and selection of alternative routes should be carried out.In addition to economic indicators,it has been recommended to take engineering geological conditions and route safety as important factors for comparison and selection.During design,vertical and horizontal collaborative design should be carried out,and the design should also fully strengthen the connection with the geological survey work.In the overall plan research process,being combined with the survey results of important work sites,bad geological work sites should be avoided as early as possible,and the overall treatment plan should be reasonably determined.