The Study Of Earth Dam Seepage Analysis On Technology Of Water Storage Improvement For Plain Reservoir

Coastal plain region is one of the most developed regions in China, but the shortage of water resources has seriously restricted the national economic development in the region. The existing plain reservoirs have many problems, so it is urgent to improve the capability of existing plain reservoirs. Most of plain reservoirs were built on soft ground, which may result in serious calamity. Therefore, Seepage analysis and control measures are key issues in plain reservoir expansion.The basic theory and the control formula of seepage problem were introduced in this paper. On the foundation of similarity of the seepage flow equations and heat equations, the conclusion of the ANSYS/Thermal module used to analyze and compute the dam seepage flow problem had been worked out. Then, the Methods and steps of back analysis of seepage coefficient based on stochastic theory were introduced. On the basis of the optimization designing module and developing for APDL language in ANSYS, the seepage procedure of earth dam and the back analysis procedure of seepage coefficient were complied.Based on stochastic theory, the results of the analysis suggest that the distribution of hydraulic conductivity of Tianjin Erwangzhuang reservoir is lognormal. Using the analysis procedure, seepage coefficient and the depth of high-pressure gunite seepage-preventing wall is received. In addition, through the analysis of two programs of improving the capability, the results demonstrate that seepage flow requirements can be met with the anti-seepage measures.There is an important engineering significance for the study of improving the capability of Tianjin Erwangzhuang reservoir. The research will produce tremendous economic and social benefits and further promote technology.