中文摘要：

基于非饱和流固耦合理论,针对某尾矿坝,建立了流固耦合渗流有限元模型,通过对尾矿库的浸润线位置以及应力场分布规律的分析,验证了流固耦合数值模拟的有效性。并在此基础上,采用流固耦合—Morgenstern-Price法,获得了不同干滩面长时尾矿坝的稳定性安全系数,并将其与采用极限平衡法、流固耦合—强度折减法获得的计算结果进行了对比分析。结果表明：采用流固耦合—MorgensternPrice法研究尾矿坝的稳定性是有效和可靠的。

英文摘要：

Based on unsaturated fluid-solid coupling theory, a finite element model of fluid- solid coupling seepage was established. The effectiveness of the numerical simulation by this model was testified through the analysis of the location of the infiltration line and the distribution law of the water pressure. Further more, the safety index of the dam＇s stability under the conditions of different dry beach lengths was obtained by using fluid-solid coupling - Morgenstern - Price method, and then compared with the caculation results of limit equilibrium method and fluid-solid coupling-strength re- duction method. The comparsion results indicate that fluid-solid coupling- Morgenstern - Price method is effective and reliable in the application of stability research of tailings dams.