Abstract:In order to study the deep anti-sliding stability of gravity dam foundation with different inclined structural planes

first

the three-dimensional (3D) geo-mechanical model test was used in C # dam section with double inclined structural planes of a water conservancy project

and a failure test was carried out based on overloading method. Through the test the failure mechanism of the gravity dam foundation was obtained and the overload safety factor K_p was found as 3.0. Then

the finite element method was used to analyze and calculate the sliding stability of the natural dam foundation with different inclined angles and the structural planes

Calculations proves that the overload safety factor with single inclined structural planes in gravity dam foundation K_c was equal to 2.6 and the overload safety factor with double inclined structural planes in gravity dam foundation K_c was equal to 2.4. The results indicate that the gravity dam failure process of modal test and finite element calculation were extremely similar for the gravity dam foundation with double inclined structural planes

Besides the overload safety factor obtained by the model test is slightly larger

The unstable sliding mode and failure mechanism of gravity dam foundations with different inclined structural planes are different. In this study

two different methods are used to compare and verify each other

and the failure mechanism of deep anti-sliding stability of gravity dam foundation with different inclined structural planes was revealed.