摘要
针对库水位变化对尾矿坝稳定性影响问题,建立考虑超孔隙水压力作用下的流固耦合数学模型,利用有限差分程序进行数值求解。对不同库水位工况下的尾矿坝稳定性进行了仿真试验,结果表明:库水位的升高对尾矿坝稳定性影响显著,随着库水位升高,尾矿坝浸润线升高,孔隙水压力增大,有效应力减小,安全系数降低,尾矿坝的稳定性随着库水位的升高按照指数形规律衰减。
According to the problem of tailings dam stability by variation of water level,the paper established a mathematic model of fluid-solid coupled that considered the excess pore water pressure,using the finite difference method to solve the equations,and made a simulated test on the tailing dam stability in different water levels.With rising of water level ,the seepage line was rising,the pore-water pressure was increasing,the effective stress and safety factor lowered.The stability of tailings dam lowered with the rising of the water level in accordance with exponential rule.
出处
《水资源与水工程学报》
2010年第4期11-14,共4页
Journal of Water Resources and Water Engineering
基金
国家自然科学基金项目(50974070)
辽宁省教育厅科学技术研究项目(2009A3334)
关键词
流固耦合
水位升高
有限差分
尾矿坝稳定性
fluid-solid coupled
water level rising
finite difference
stability of tailings dam
