Application Of Grouting Technology In Seepage Control And Reinforcement Of Masonry Dam

Masonry dam is one of the important dam types in the project of water conservancy dam,and has a long history.China is the world's first use of natural stone dam construction of the country,its history can be traced back to the second century BC Dujiangyan.At present,China's dam height of more than 15 m masonry dam more than 2,000 seats,is the world's largest number of countries to build.Most of these masonry dams were built in the 1960 s and 1970 s,and played a huge role in promoting the development of agriculture and agriculture.However,due to the technical and economic conditions at that time,a considerable number of masonry dams have been used so far,the phenomenon of aging,degradation and other phenomena,resulting in dam foundation,dam or abutment serious leakage,resulting in project benefits decline,endanger the safety of the project.There are many reasons for the leakage of the masonry dam.For the masonry dam which has been leaking,we need to pay attention to find out the cause of the leakage and take effective anti-seepage measures to deal with it.Grouting technology has always been a major measure of the grouting dam as a seepage-proof reinforcement,which is the use of equipment to hydrate the cement slurry into the dam and dam foundation,filling the loopholes and crevices of the masonry dam itself,Anti-seepage body can also further improve the bearing capacity and integrity of the dam.According to the engineering example of grouting reinforcement of the masonry dam in the scattered beach of Guangdong Province,this paper analyzes the causes of the leakage of the masonry dam,and compares the technical scheme of dam reinforcement by comparing the technical scheme.The dam body is filled with grouting,the dam foundation is mainly composed of curtain grouting,and is supported by consolidation grouting,and the abutment contact belt adopts contact grouting.Through the grouting technology,on the one hand to solve the problem of dam leakage,on the other hand by increasing the dam body mass masonry to improve the dam safety stability of the safety factor,so that the original dangerous reservoir dam basically eliminate security risks,Better play its flood control,power generation and other tasks.And in the process of improving the relevant design theory and construction points for the future pulp masonry dam in similar water engineering applications encountered similar problems to provide reference and reference.