ABSTRACT
The leakage problem of dykes is an important research content of dykes and reinforcements. Leakage not only leads to the loss of reservoir water but also causes the failure of the internal structure, which seriously threatens the safe operation of the dam. This paper introduces a new anti-seepage material, Sidraton particle, suitable for leakage repair of earth-rock dams. The self-developed stress-controlled permeability test system was used to explore the evolution law of the permeability resistance of Sidraton particles and the effects of compactness, vertical stress, and sand content on their impermeability. The results show that the evolution law of its impermeability performance can be divided into the synchronous deformation stage and the leakage plugging stage. On the premise of not destroying the integrity of the particles, increasing the compactness and vertical stress can effectively enhance the impermeability of Sidraton particles. At the same time, an appropriate proportion of sand content has little effect on the impermeability of particles, which provides a certain reference for cost control in practical engineering applications.
