作为一种新的数值方法,数值流形方法在重力坝抗滑稳定性方面的研究较少。本文首先给出了水压及扬压力的荷载矩阵、安全系数的求解方法,然后采用数值流形方法分析了重力坝沿建基面及深层双斜面的抗滑稳定性,得出了安全系数,并与有限元接触分析的结果进行了对比。结果分析表明:采用数值流形方法和有限元接触分析得到的安全系数基本一致,从而验证了数值流形方法在重力坝抗滑稳定分析中的可行性。 As a new numerical method, numerical manifold method is less studied in the stability of gravity dam against sliding. In this paper, firstly, the load matrix of hydraulic pressure and uplift pressure and the method of solving the safety factor are given. Then, the numerical stability of the dams along the basal plane and the deep double inclined plane is analyzed by numerical manifold method. The results were compared with those of the finite element analysis. The results show that the safety factor obtained by the numerical manifold method and the finite element contact analysis are basically the same, which verifies the feasibility of the numerical manifold method in the stability analysis of the gravity dam.