Research on the Stability of Dam Foundation of a Sluice Dam Project in the Pearl River

Abstract

In water conservancy projects, the safety and stability of sluice dams are worth exploring due to the fact that they are subject to a wide variety of loads and the physical and mechanical properties of the dam foundation are easily weakened. This paper focuses on the study of the stability of the foundation of a dam project on the Pearl River when the strength and deformation characteristics of the weak interlayer are weakened. Through geomechanical model tests, two methods of overloading and strength reduction are used to explore the stability of the dam foundation of the dam. Whether the instability of the dam foundation of the sluice dam is deep sliding or shallow sliding, the deformation characteristics of weak interlayers in various parts under different overload multiples are explored. Tests show that only the weak interlayer at the surface is cracked and penetrated, and the deep weak interlayer is not obvious. It shows that when the weak interlayer and rock layer are weakened, only shallow damage occurs to the dam foundation and only targeted reinforcement measures are required. The research is not only critical to the safe operation of the sluice dam project, but also serves as a reference for other similar sluice projects.