Hydropower Project Environmental Impact Assessment Of Quantitative Analysis Method Study

In recent years, with the rapid development of China economy, China has built or is building a number of hydropower projects, hydropower projects, although these can be a reasonable allocation of water resources, to solve the power supply and demand, but at the same time also caused local erosion, soil environmental damage, loss of biodiversity, adverse effects on water quality and the local water environment and ecological climate. As people’s awareness of environmental protection, the negative impact of the construction of hydropower project on the environment has received increasing attention.For the above situation, the paper defines the concept and content of the environmental impact assessment, the main contents include:(1) Summary Evaluation of environmental impact at home and abroad on the basis of analysis of the environmental impact assessment outlines the concept, discusses the hydropower project environmental impact assessment of concepts and processes, starting from the natural environment, social environment, ecological environment, the establishment of a sound The index system of environmental impact of hydropower projects, proposed three-level indicators hydropower project environmental assessment, 10 secondary indicators, three indicators indicator system 41 constituted.(2) the index system indicators and can not be directly used to evaluate, because it has a different dimension, characteristics are not the same, so the different indicators standardized process. The index is divided into qualitative indicators, semi-qualitative indicators and quantitative indicators. Qualitative indicators and qualitative indicators were half an optimistic coefficient and fuzzy number method to quantify the process, quantitative indicators dimensionless normalized.(3) According to the characteristics of hydropower project environmental assessment, comparative analysis of the advantages and disadvantages, application of network analysis methods currently used to determine the weight of each index, fuzzy comprehensive evaluation method to evaluate them, to establish a rational model for hydropower ANP-FCE a comprehensive evaluation of the project.