Abstract: Taking typical engineering problems of dam construction on dissolution foundation for example, the dissolution belt random field model is established based on researching characteristics of the spatial distribution of dissolution rocks. Then, the adaptability is evaluated to build dams on the foundation and the statistical properties of the dam are studied through stochastic finite element method (SFEM). The model simulates the disorderly distribution of rock dissolution, eliminates artificial assumption of the line corrosion rate, and avoids the shortage of rock dissolutions in the deterministic model. The method and conclusion also provide a useful reference to the numerical analysis under the complex geological conditions.

Key words: dissolution dam foundation, stochastic finite element method, random field model, foundation adaptability to build dams, dissolution effect