Considering the material parameters and the load changeability, the reliability of intensity and stability for the concrete gravity dam is researched with the method of Monte Carlo simulation.

应用蒙特卡罗模拟方法，考虑材料参数和荷载的变异性，对混凝土重力坝强度和稳定性的可靠性分别进行了研究。

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Simulation results show that the space gravity condition exerts great influence on the fluidization characters, the particles fluctuation intensity increases with the decrease of gravity especially.

结果表明：空间重力环境是影响稠密气固两相流体动力特性的重要因素，颗粒脉动强度将随着重力条件的减小而增大。

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On top of that, this method is used to calculate the stress intensity factors of interface crack at the heel of gravity dam, and some useful conclusions are presented.

作为应用，文中计算了坝踵界面裂缝的应力强度因子，得出了应力强度因子随坝基弹模、库水位和缝水压力的变化规律。

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