Stress-Deformation Analysis For The Core Dam Constructed On Deep Overburden

The heart wall dam took in earth stone dam a young member, as a result of its each kind of merit, its development speed is very quick, the various countries has all completed the massive hearts wall dam, likes Canadian the horse Nick 3 # projects, this is in the world a most successful model. How but regarding constructs the heart wall dam in the deep overburden layer also to become the question which the various countries faces, because its geological condition is very complex, this time the dam body and the dam base stability and guards against infiltrates the question to appear especially importantly, but constructs the concrete to guard against infiltrates the wall to become the key. Therefore has the necessity to conduct the research very much to the deep overburden layer heart wall dam.This article take xia ban di project as the research object, succeeds in finite element software ANSYS inducts the south- water model and a Duncan -zhang model, has studied two kind of different design proposals is the clay guards against infiltrates the wall plan and the asphalt concrete guards against infiltrates under the wall plan the dam body, the heart wall, guards against infiltrates the wall and so on in to finish the time limit for a project, to store water under the time two kind of operating modes stresses and the distortion, not only has conducted two-dimensional and in the three dimensional situation research, but also to guarded against infiltrates the wall the material characteristic to carry on the analysis, Draws the following several important conclusions:(1) Through the research of the thickness and the material characteristic of Guards against infiltrates the wall, we discovered guards against infiltrates the wall thick to go past in a big way, its stress smaller, but affects is not big. Along with guards against infiltrates the wall module increasing, the wall stress increases.(2) As a result of the river valley three-dimensional effect, the three dimensional computation displacement value is slightly smaller than the two-dimensional computation (south-water model); Uses the Duncan-zhang model three dimensional analysis obtained displacement value to be much bigger than the south- water model.(3) Two kind of plans heart walls in finish the time limit for a project and store water the time not to appear the tensile stress, the upstream slope to the stress of heart walls are bigger than the surface water pressure in the two kind of plans (not to consider heart wall cohesive force, to is safe), cannot have the hydraulic fracture .Among them, the asphalt heart wall dam' ability of anti-split is better.