摘要
针对库水位变化和降雨会使坝坡稳定性分析更为复杂的问题,基于非饱和渗流理论,借助GEO-STU-DIO软件对某土石坝进行数值模拟,研究了该坝在水位骤升、水位骤降及降雨情况下坝体内的渗流情况,以极限平衡原理和Morgenstern-Price条分法为基础分析了坝坡产生滑移的最小安全系数变化规律。结果表明,复杂水力条件下不利于坝坡的稳定性,且坝坡安全系数变化呈现出一定的规律性。
Reservoir water changing and rainfall will make dam slope stability analysis become more complicated. Based on the theory of unsaturated seepage, numerical simulation of earth-rockfill dam is implemented by using GEO- STUDIO software. Under the conditions of sudden rising of reservoir water level, sudden drawdown of reservoir water level and rainfall, seepage behaviors of the dam body are discussed. Regularity of the minimum safety factor for dam slope sliding is discussed by applying limit equilibrium theory and Morgenstern-Price slice method. The results show that it is unfa- vorable to the dam slope stability under the complex hydraulic conditions, and the dam slope safety factor has certain regularity.
出处
《水电能源科学》
北大核心
2011年第11期77-79,69,共4页
Water Resources and Power
关键词
渗流
坝坡
非饱和土
稳定分析
安全系数
降雨
seepage
dam slope
unsaturated soil
stability analysis
safety factor
rainfall
