Analysis & Research On Deformation Of Rock-fill For CFRD

The high concrete face rock-fill dam (CFRD) has become one of the most important type of dams in the design of dam project, for it has advantage in low investment, short construction period, safety and reliability, conveniency in construction, high adaptability etc. In the design of CFRD, the hot issue mainly focuses on the deformation control of rock-fill body, the design of construction procedure and the analysis of water action.As the rock-fill body is the main target in the numerical analysis of CFRD, the reasonable simulation of deformation and stress dominates the whole reliability. Tsinghua K-G model, based on large-scale and high-pressure three-axis experiments, proves to be available in describing the stress-path and reflecting the law of the CFRD through several project practices such as Tianshenqiao and Sanbanxi project.In numerical computatiom ,it is difficult to determine the value of parameters, because The Tsinghua K-G model.have so many parameters.,so it is very important to analysis the sensitivity for very parameter.this article Analysis the sensitivity of The Tsinghua K-G model.based on the Shuibuya CFRD,the result indicated.that parameters in the primary and secondary stone body must maintain certern proportion to simulate the horizontal strain.The dam body construction working procedure relates the construction cost of dam The research indicated Counter-construction is good to the strain of CFRDThe research indicated the distribution of primary and secondary stone body is important to cost of dam the secondary stone body relate with the strain of dan when dam withstand the pressure of waterWork in this thesis will play a active role in the research on CFRD. The validation of the working procedure can be used for reference by other project, and the sensitivity-analysis will improve the application of Tsinghua K-G model.