FAILURE MODEL TEST ON DEEP ANTI-SLIDING STABILITY OF WUDU RCC GRAVITY DAM
武都碾压混凝土重力坝深层抗滑稳定破坏试验研究

Based on the geological simplification of the typical sections and dam foundation of Wudu RCC gravity dam,the 3D geomechanical model test on stability against deep sliding in the condition of natural foundation of this dam is performed.In the physical model,the conditions of landform and geology including rock mass,fault and joint of the typical monoliths are simulated.According to the mechanical parameter of the rock mass and weak structural plane,materials suitable for the geological condition of Wudu project are developed.The overloading method is used.As a result,the deformation behaviors of the dam,dam foundation and the main fault are analyzed;the failure process,shape and mechanism of the dam and foundation are discussed;the controlling factors influencing the stability of dam foundation are disclosed and the safety factor and failure mechanism of the typical dam sections are achieved.Thus,the reinforcement measure for the dam foundation is discussed.The presented research results provide references to safety evaluation and design of this dam.