Abstract
The wetting deformation of dam material will lead to uneven settlement of dam body, which will harm dam safety. A large static triaxial test instrument was used to conduct a single line triaxial compression humidification test on dam material in the main rockfill area of a power station. The humidification deformation rule and its relationship with confining pressure and stress level were analyzed. The experimental results show that the wetting axial strain is inversely proportional to the stress level, and the wetting volume strain is proportional to the confining pressure. The wetting model can effectively reflect the changing law of dam materials, and the research results provide experimental basis for the calculation and design of the dam body wetting deformation.
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