拱坝坝肩岩体动力稳定性分析研究方法简述

高拱坝坝肩岩体动力稳定性分析是高拱坝抗震研究的主要内容之一。从高拱坝的抗震设防标准及动力稳定安全判定准则、坝肩岩体的结构和动力特性、坝肩岩体动力稳定性分析的刚体极限平衡法、离散元法、刚体弹簧元法、拉格朗日不连续变形分析方法、数值流形方法、随机理论与方法等方面对高拱坝坝肩岩体动力稳定性分析的理论和方法进行系统的归纳和总结,并介绍了各方面的最新进展。可以看出,为满足高拱坝建设实践的需要,应对高拱坝坝肩岩体动力稳定性分析的理论和方法进行更深入的研究。

Review on dynamic stability analysis of rock mass in high arch dam abutment

The dynamic stability analysis of rock mass in high arch dam abutment is one of the main contents of anti-seism research of high arch dam. The theories and methods for dynamic stability analysis of rock mass in high arch dam abutment are systematically summarized in such aspects as the anti-seism standard, the criteria of stability evaluation, the structural and dynamic property of rock mass in dam abutment, as well as the limit equilibrium analysis method of rigid body, the discrete element method, the rigid body-spring element method, the lagrange discontinuous deformation analysis method, the numerical manifold method and the probability theory and method. The recent progress on the above aspects is also introduced. It can be shown that the theories and methods need to be investigated broader to meet the demand of dam construction practice.