关键词: 覆盖层, 心墙坝, 渗流场, 应力场, 分析

Abstract: For dam built on the deep overburden layer, stress field and seepage field affect each other during the process of filling and impoundment. Stress-seepage coupling should be considered in the FEM in order to obtain exact solution. Taking a core wall dam built on deep overburden as an example, combined with the theory of stress-seepage coupling, the finite element model is established. Through calculation and analysis, the obtained regularity of the deformation and stress of dam and the obtained regularity of the porosity and the osmotic coefficient of overburden layer are worthy of reference.

Key words: overburden layer, core wall dam, seepage field, stress field, analysis