Coupling Analysis On The Reinforcement Of Earth-rock Dam In Seepage Field And Stress Field

The earth-rock dam is combinated by the soil, stone and other local material,it is the oldest dam, dam construction is the most widely used and one of the fastest development of dam types. At present, the national has built hundreds of thousands of reservoirs, most of which are earth-rock dams. But due to some problems in the survey, design, construction, management and operation, a number of reservoirs and dams exist the different degree of hazard, which affect the project economy, but also it is easy to bring the occurrence of safety accidents to the country and people's life and property loss.With the Design of earth-rock dam,it is important to consider the seepage calculation to determine the leakage loss, and reasonably to arrange anti-seepage drainage measures,and sometimes to determine the dam types and dam section size with the help of seepage calculation; when the earth-rock dam works,seepage conditions are difficult to meet the design consideration, and it always changs,so it is necessary consider of seepage calculation to determine the stability analysis of dams, and even it is necessary to set up reinforcement measures.It is helpful to the seepage prevention effect with the use of concrete impervious wall reasonably,but it still exist some problems in the design of concrete impervious wall,actually in many engineering, it produces a number of problems. When the earth-rock dam filled and water storage, it is complex to calculate the impervious wall's force,and at present it use finite element to analysis the stress and deformation to the impervious wall.however the finite element calculation exist some actual deviation compared to measured value and have larger tensile stress, so it is necessary to research the situation deeply.It is important to consider the stress condition involved with seepage field and stress field's in the earth-rock dam,when considering the seepage field and stress field separately it maybe exist some deviation compared to the measured value, so it is necessary to consider the seepage field and stress filed as a system and it is helpful to analysis the reason of these problems.This paper considers a reinforcement project as the research object, involving the seepage field and stress field's coupling,and analysis the displacement and stress compare the former reinforcement to the later. This paper also analysis the affect to the dam's displacement and stress when the concrete impervious wall moves In the horizontal direction. on the basis of the theory calculation of some parameters, it is helpful to provide a certain reference value to the Practical engineering.