复杂山区高速公路工程与环境协调的选线技术*

TECHNOLOGY OF ROUTE SELECTION BETWEEN HIGHWAY PROJECT AND ENVIRONMENTAL COMPATIBILITY IN COMPLICATED MOUNTAIN AREA

以西昌至攀枝花高速公路线路设计为例,研究复杂山区高速公路工程与环境相协调的选线技术。首先介绍了沿线地质环境、水文环境对线路选择的制约,以及相应采取的绕避和防治工程措施;其次讨论了在成昆铁路已占有较好线位的条件下,公路选线如何与既有铁路相协调;最后论述了公路建设对水土保持的影响,包括将昔格达组地层半成岩作为路堤填料以减少取弃方的思路等。

This paper takes the route design of express highway from Xichang to Pan Zhihua as the background, mainly discussing the compatible technology of route selection between highway engineering and environment in complicated mountain area. Firstly, it presents the limitation of geology and hydrological environment to route selection and the corresponding engineering measures of avoidance, prevention and treatment that should be taken. Then, it discusses how the route selection is compatible with existing railways under the condition of good route position of Chengkun railway. At last, this paper explores the effects of highway construction on the reservation of water and soil, which includes a new opinion that half-rock of Xigeda group is utilized as the embankment filling so as to reduce the getting and abandon of earthwork.