Visco-elastic constitutive model recognition of rock mass and its engineering application

Determining the best model from many visco-elastic constitutive models is studied. In the case of rock mass as a complex system, rock deformations with time as output response, the best visco-elastic model is obtained with general principle of complex system model, such as least square method, nonlinear optimum technology and simulation method. Furthermore, the optimum model is applied to stability analysis of high ship-lock slope of Three Gorges. The numerical results show that the recognition of constitutive model can be used to predict engineering behaviours. These can achieve the goal for combination of theory analysis with engineering practice, and this research method may be applied for other engineering.