库区浸水路堤稳定性计算方法分析

为完善库区浸水路堤稳定性的设计方法,基于简化Bishop法和渗流力学中流网的性质,推导出考虑动水压力作用下的简化Bishop计算方法。通过工程实例,分别采用文中方法、考虑动水压力的瑞典法和理正设计软件法三种方法计算,并进行对比分析。结果表明:文中方法与理正设计软件法较为接近,而瑞典法安全系数偏小。采用文中方法评价库区浸水路基稳定性是合理可行的,可供工程设计部门参考。

Analysis on Calculation Method of Immerseable Embankment Stability in Reservoir Area

In order to improve the design method of immerseable embankment stability in reservoir area,based on simplified Bishop Method and flow net property in permeation fluid mechanics,the simplified Bishop calculation method is educed considering the effect of hydrodynamic pressure.Through engineering practice,the stability of immerseable embankment is calculated separately using simplified Bishop Method,Swedish Method considering hydrodynamic pressure and Leading Software Method,and the results are analyzed through comparison.It is shown that the result from simplified Bishop Method is close to that from Leading Software Method,while that from Swedish Method has smaller safety factor.Therefore,it is feasible and rational to adopt simplified Bishop Method to evaluate the stability of immerseable embankment in reservoir area,which can be a reference for engineering and design department.