Numerical Analysis Of The Effects Of Anti-seepage Slab-wall Sink By Vibration On The Behavior Of Earth Dams

Anti-seepage slab-wall of sink by vibration technology is a new technology of reinforcing dam; at present, theoretical research on it is not deeply and comprehensively made. This thesis firstly made numerical analysis on the effect of reinforcing dam with anti-seepage slab-wall of sinking model by vibrating. The main purpose of this thesis is to help engineering designers get good comprehension about the internal force and displacement of the anti-seepage slab-wall. Main content of the thesis is as follows:Research on theories concerning the new technology has not been carried out fully because it is a new technology. Most engineering designers are not clear about the internal force and displacement of anti-seepage slab-wall, and therefore can not learn the effect of anti-seepage slab-wall in projects of reinforcing dam.(1) The initial stress and displacement field of the dam is the initial status calculated with FEM, so the initial stress and displacement field can be simulated accurately. Because the construction of the dam is carried out by stuffing soil step by step; as a result, the initial stress and displacement field of the dam has been obtained through simulating this construction process.(2) The stress and displacement field of the soil around the anti-seepage slab-wall has been got by simulating the construction process of the anti-seepage slab-wall. The squeezing effect of anti-seepage slab-wall has caused the redistribution of the stress and displacement of the soil around the wall.(3) The stress and displacement of the dam has changed with the effect of water pressure after water is stored. The stress and displacement status of the dam and anti-seepage slab-wall has been calculated out through putting water pressure onto the left and right side of the anti-seepage slab-wall.(4) The analysis of the parameters has been made, and especially the effect which thickness of the anti-seepage slab-wall has on the stress and displacement of the dam and anti-seepage slab-wall is discussed in this thesis.