Abstract:

Evaluating highway construction environmental impact scientifically and rationally is the prerequisite for dealing with the relationship between highway constructing and ecological environment protection,and the sustainable development. In this paper,it analyses current highway technical specifications,and suggests an environmental impact evaluation index system and evaluation method for highway design scheme comparison.It chooses 5 items,route design,bridge design,tunnel design,protection engineering and temporary,and 17 indices to evaluate,and put forward each evaluation criterion based on specifications and statistical data.In order to reflect the subjectivity of classification and the objectivity of data,analytic hierarchy process (AHP) is applied to calculate the weight of the subsystem,and the entropy is for the weight of the indices.The result shows that the lever of this highway environment impact is close to medium grade，which is matched with the fact.It indicates that the evaluation method is feasible.