Research on seepage prevention and reinforcement of masonry dam under complex conditions such as high head,large gushing water and dense cracks
Based on Dahedong reservoir reinforcement project in Laoshan district of Qingdao city,by special investigation in the early stage,the leakage site and leakage causes of the masonry dam are ana-lyzed.Combined with construction conditions,the optimal anti-seepage reinforcement scheme-anti-seepage surface layer+curtain grouting+consolidated grouting-is adopted.Furthermore,on the basis of operation effect of the project after anti-seepage reinforcement,the research focusing on the seepage prevention and reinforcement technology of masonry dam under complex conditions such as high head,large gushing water and dense cracks is carried out.To solve the seepage of masonry dam under complex conditions,determination of causes of seepage is the premise,combined application of various seepage prevention and reinforcement methods is the means and long-term operation monitoring is the aid.Only in this way,long-term safe operation of the dam can be guaranteed.
masonry damcause of leakageconstruction conditionsanti-seepage reinforcement