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小湾电站坝前堆积体规模较大巨坝房开挖时下侧局部被挖除，水库蓄水后堆积体下部将浸于水体中，水库水位的变化也将影响其稳定性，故需对其进行稳定性分析和加固方案的分析，作者在先前使用平面离散无法（ＵＤＥＣ）及有限元法对该堆积体在自然状态下的稳定性初步进行二维数值计算与分析的基础上，对堆积体又进行了预应力锚索加固方案的三维有限元分析，取得了相应的研究成果。
Xiaowan hydropower station dam body is large in scale before excavation excavation of the lower part of the lower part of the excavation, the reservoir after the accumulation of body will be immersed in the lower part of the body, the reservoir water level changes will also affect the stability of its After analyzing the stability analysis and reinforcement scheme, the authors previously used two-dimensional numerical calculation and analysis of the stability of the pile under natural conditions by using UDEC and finite element method, In addition, a three-dimensional finite element analysis of prestressed anchor cable reinforcement scheme was carried out and the corresponding research results were obtained.