GIS在高速公路岩溶路基病害研究中的应用—— 以水任—南宁高速公路为例

随着人口的增长、经济的发展,一些新高速公路的建设不可避免地经过岩溶发育地区,水任- 南宁高速公路No. 4合同段大约有10km穿过岩溶极为发育的岩溶谷地,下伏著名的地苏地下河系,对路基的稳定性造成巨大威胁。本文以该路段为例,从多源空间数据的管理、数据可视化、动态分段、数据查询、空间分析和专题地图制作等方面介绍GIS在高速公路岩溶路基病害研究中的应用。 

THE APPLICATION OF GIS IN THE STUDY ON HIGHWAY SUBGRADE DISEASE IN KARST AREA

With the increase in population and the development of economics, more and more new constructed highways have to go through karst terrain. About 10km of Shui-Nan highway in No.4 section, between Hechi and Nanning, is in a karst valley where Disu underground river system underlies. In order to evaluate the risk of karst to highway, based on the gathered data that include karst features distribution, karst feature treatment, hydrogeological condition, and the results of geophysical investigation, the authors built a series of databases firstly, and then created the corresponding GIS layers, and then, the autors give a detail discussion about the method of using the GIS functions such as display, query, spatial analysis, dynamic section analysis, and thematic mapping to manage and analyze these data,and finally, the risk map along the highway is created.