Comprehensive evaluation of earthquake damage degree of reservoir dam based on key indexes
GU Yan-chang · Hydro-Science and Engineering · 2010
Hydraulic projects are damaged during the earthquake,and earthquake damaged reservoirs bring tremendous threats to the downstream residents.Evaluation of earthquake damaged reservoir dams is of significance to the risk control and reinforcement of damaged reservoir dams.According to the characteristics of damaged reservoirs,the comprehensive evaluation indexes system is established.This paper adopts the 4-level grading of earthquake damage,and the indexes are classified to determine their thresholds.Then the concept of key indexes is put forward.In the comprehensive evaluation system established in this paper,the evaluation of key indexes should be carried out first.If one of the key indexes is remarkable,the whole comprehensive evaluation system is considered remarkable.If all the indexes aren′t remarkable,then the linear additive weighting method is used to carry out the holistic comprehensive evaluation of earthquake damaged reservoirs.The project application indicates the method presented in this paper is more objective and practical.