Environment Impact Assessment For Railway Construction Project

Infrastructure construction has a huge role in promoting the development of the national economy.In the past 20 years,Africa?s transportation infrastructure construction has developed rapidly.Whether each railway construction has achieved the expected investment effect,and to what extent it has completed the role of promoting social and economic development along the line.Evaluating the environment impact class of railway project can be used to minimize or to reduce impact incident and achieve the sustainable development of the country.However,the existing studies about railway project to the surroundings mainly focus on exploring the impact of financial and revenue impact but ignore to go in the deep analysis of environmental impact assessment,especially negative impact analysis.The country in developing way thinks to a positive impact due to the growth of the economy only.To answer these questions,we need to carry out the performance monitoring analysis and environmental impact assessment of railway projects especially that of Rwanda Railway.Railway projects on the regional environment cause a huge impact.Nowadays,the life cycle environmental assessment of railway projects in Africa is still under research.Therefore,it is necessary to develop the corresponding evaluation methods and theories on the life cycle environmental assessment of railway projects by establishing an index system.A life cycle assessment(LCA)framework using the quantitative method was developed to evaluate the environmental impact of railway projects quantitatively.The railway life cycle was divided into 5 phases: survey and design,raw materials processing,construction,operation,and demolition.This research also constructs a factor system of environmental impact assessment of railway constructing projects based on an extensive literature review and develops a mathematical model based on the methods of fuzzy comprehensive evaluation model(FCEM)and failure mode,effects and criticality analysis(FMECA)for evaluating the assessment impact of projects.Besides,this thesis conducts computational experiment based on a questionnaire survey to verify the effectiveness and feasibility of this proposed model.The results suggest that this model is reasonable for evaluating the environmental impact assessment and assessment class indicators of the project.