The Xiaowan arch dam is 292m high and the basic seismic intensity at the damsite is 8 degrees. This study is an important scientific and technological research item determined by the former Ministry of Electric Power during the 8th Five－ Year Plan period. The study was carried out based on some of the key technical problems in the design of the Xiaowan arch dam. The study achieved innovatory results in analysis of rock mass fissure seepage flow and high arch dam stability, calculation of high arch dam non－ linear cracking, and high arch dam aseismic design, etc. The study results provided a scientific basis for the design of the Xiaowan hydropower station, and some of them have been incorporated in the preliminary design of the Xiaowan hydropower station. They can be widely popularized and applied in other projects of this kind due to their universal adaptability.%小湾拱坝坝高292m，坝址基本地震烈度8度。本项目系“八五”期间，原电力部重大科学技术研究项目，紧密结合小湾拱坝设计中的一部分关键技术问题进行研究，在岩体裂隙渗流与高拱坝稳定分析，高拱坝非线性开裂计算方法研究，高拱坝抗震设计等方面取得创新性的成果，其研究成果为小湾拱坝设计提供了科学依据，部分成果已用于小湾水电站初步设计中。其普遍适用性具有广泛的推广应用前景。
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