Research On Environmental Impact Of Highway Engineering Waste Slag Based On F-AHP

Expressway is not only an important infrastructure project in China,but also a service industry.It can promote the rapid growth of national economy,but also has a negative impact on the environment,especially the waste slag of expressway,which has a significant and farreaching impact on the environment.The research on the environmental impact of waste residue is not only in line with the national sustainable development strategy,but also can further promote the improvement of economic level,which is an important topic in the field of environmental research.This paper mainly evaluates the environmental impact of the waste slag,taking the environmental impact of the slag yard as the main embodiment point,aiming to explain the impact of the waste slag on the ecological environment,geological environment and hydrological environment.Based on the principles of road ecology and system dynamics,this paper analyzes the environmental impact of Expressway waste.Combined with the field investigation of mianxi Expressway Luoning section project,this paper explores the negative impact of waste residue accumulation on the environment from the aspects of ecological environment and geological environment,so as to provide the basis for waste residue environmental impact assessment.Based on the concept of soil and water dynamics,the system of environmental impact assessment is established.AHP and factor analysis are used to calculate the weight,and the weight results are combined with F-AHP(Fuzzy AHP)to evaluate the environmental impact of waste slag.The aerial survey images are analyzed by using remote sensing analysis software and GIS geographic information software,and finally the environmental impact assessment model of waste slag based on Remote Sensing GIS analysis is established.Based on the analysis of the waste dump in Luoning section of mianxi expressway,the influence grade of the waste dump is determined.Combined with the ecological restoration theory and the characteristics of the waste dump,the disposal strategy of the waste dump in line with the engineering practice is discussed.The engineering practice shows that the environmental impact assessment system of the waste dump constructed in this paper is in line with the reality,and the method is scientific and practical,which can be used in the waste dump In the study of environmental impact of slag.