Study On Evaluation System And Measures Of Aging Damages In Earth-rock Dam

There are about 8,6000 reservoirs in China and more than 90 percent of them adopt earth-rock dam as a breakwater structure. Because of the influences of design, construction and management, most of the earth-rock dams are of different damages such as crack, leakage, coast etc, and become ill health. The existence of damage in earth-rock dam influences the normal run of reservoirs and threatens the safety of people's lives and properties. Due to the facts above, the damage detection and quantitative evaluation of earth-rock dam becomes an important task for timely maintaining and reinforcing the damaged dams in order to avoid collapse. Based on full investigation of present dam damages and adaptation of new theories and new methods, novel evaluation system and damage detection method are studied. The main contributions of this paper are as follows:1) Our country ground dam development general situation and circulate the present condition, the aging disease in dam in ground harms the degree the evaluation the investigative purpose with meaning, and the aging disease in dam in ground harms the reason with manage the domestic and internationalresearch present condition.2 ) The formation cause, evolution mechanism, type and feature of earth-rock dam aging damage are thoroughly investigated.3 ) Detection methods for crack, leakage, coast and so on are proposed.4) An evaluation system of aging damage is constructed, which uses a new approach named as multi-factor analysis to effectively carry out quantitative evaluation and classification of earth-rock dam damage.5 ) Measures of preventing and repairing aging damage are presented.On the basis of the analysis results of the evaluation system, the foundational data are provided, which are used to judge the degree of aging damage and furthermore to determine the reasonable measures used for preventing aging damage and maintaining, reinforcing or reconstructing dam. The feasibility and effectiveness of the proposed method in this paper are verified in the practical engineering application.