Concrete Cutoff Wall In The Earth Dam Reinforcement

In recent years, our government make use of national debt to reinforce sick dams in order to ensure their safety. According to investigation, technology of reinforcement of concrete anti-seepage wall is an effective and widely applied reinforcement method in the field of dam reinforcement.Though concrete anti-seepage wall is applied widely in the engineering, its design and theory research are still not mature, and there are many problems in the applications .It is the most outstanding in all of them that are the safety of the dam and the harmonious distortion between dam and concrete wall. Therefore, it is necessary to carry out theoretical research to find out their working mechanism and mutual influence, and then put forward the resolvent.Through literature research and in-situ investigation, there are the objective summarization to the applications of the dam.Based on the reforcement to the homogeneous earth dam, in this paper theconstruction process of the dam is simulated numerically, which provides reference to the quantitative analyses of the reinforcement construction and the stability of the dam. Use the coupled fluid-solid analysis to simulate the change of the seepage field after storing water. Then determine the stability of the dam during operation after the splitting grouting, thereby provide reference to the estimation of the reinforcement result.Combining the different water level in the dam after used, primarily analyze the influence on the stress in the dam produced by the changing of water level.Analyze the stress and displacement of the plastic concrete wall in the dam, and compare difference of the stress and displacement of the plastic concrete anti-seepage wall and harmonious distortion when the elastic modulus varies.Through comparing the in-situ phenomenon and numerical simulation analysis results, we can draw some universal conclusions. These conclusions provide instruction to the construction of the concrete anti-seepage wall construction, providetheoretical base to the stability of the dam and the reinforcement effect of the technique of concrete anti-seepage wall, and provide reference to the popularization of the anti-seepage wall reinforcement technique in this kind of engineering.