Influence of narrow-valley formation on the mechanics property of the 200m high CFRD

At present,it is not reported that constructed CFRD is higher than 200m in narrow valley.In this paper,combining with the designed 225m high CFRD with the rate of valley width to height being 1.88,comprehensive numerical analysis is performed to predict the deformation and stress characteristics during construction and reservoir fulfilling by three dimensions nonlinear FEM.Prospective problems are discussed in high CFRD built in narrow valley,the arching effect on dam's deformation and stress is analyzed and the corresponding engineering measure is proposed.