Daliushu Dam Stability Model Test Study

In this paper, based on the fact, according to the former scholars' survey to the geological general conditions in the DaLiuShu dame site district, and applying model tests combined with numerical analysis, the stability of DaLiuShu dame site is studied.First of all, the basic theories and methods of model tests are introduced in this paper. It mainly includes the similarity theory and model tests which are used in model tests on the stability of the dame site. Of them, the methods of model tests mainly include the similar material model method and the photoelastic model method.Secondly, the basic geological general conditions are analyzed in the area of DaLiuShu dame site. At the same time, a primary conclusion is drowned: the big scope of relaxed rockmass in DaLiuShu dame site district are caused by exterior motive force geological effect and interior motive force geological effect which dominated by seismic activity. In the following, this standpoint is testified through the model tests of vibration on the axis of the dam.Once more, the photoelastic model test is operated on the basis of the structure framework in the dame site. The results show that there lie-in some problems on resisting dislocation in DaLiuShu dame site district. In addition, this problem is analyzed with the finite element method(Marc), as a result, the two results tally with each other fundamentally.At last, the paper reaches the following conclusion: the DaLiuShu dame site district belongs to the unstable site.