ABSTRACT
In the construction of mountain roads, the dumping field is a more common off-line ancillary project, and the dumping field will have a certain impact on the surrounding environment. In view of the site selection method of the abandoned land for green highway construction, this paper studies the site selection of the abandoned land site. Firstly, the influencing factors of the abandoned land are analyzed, and three major types of influencing factors are proposed, namely ecological environment, economic performance, topography and geological structure. We need to consider the environmental impact, the economics of the cost, and the safety of site selection. For the influencing factor of site selection, we use the analytic hierarchy method to construct the structural diagram and then construct the judgment matrix of site selection. Quantified relative importance is used to indicate the importance of the impact factor to achieve the purpose of site selection. Secondly, based on the GIS system, a spatial analysis site selection model is built to analyze different factors. According to DEM, the characteristics of landforms such as soil dumps can be calculated. The data is standardized, and according to the weighted superposition analysis, the influence of multiple factors on the site selection of the abandoned land can be determined, so that the location of the abandoned land can be determined.
