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首页> 外文会议>International Conference on Soil Mechanics and Geotechnical Engineering(16 ICSMGE) vol.3; 2005; Osaka(JP) >Optimization of drawdown procedures of partially submerged slopes
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Optimization of drawdown procedures of partially submerged slopes

机译：优化部分淹没边坡的沉降过程

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摘要

The paper investigates the stability of earth dams or reservoirs under drawdown conditions taking into account suction effects, usually neglected in routine analyses. An unsaturated soil profile above the water table is assumed and soil suction values are estimated by an appropriate soil-water characteristic curve. Starting from full and partial submergence levels, stability analyses are performed both for rapid and slow drawdown conditions, by varying non-dimensional suction parameters. Results and practical implications in drawdown procedures are discussed, demonstrating that the negative pore-water pressures can significantly accelerate a safe drawdown process.
机译：本文研究了在水位下降条件下土坝或水库的稳定性，并考虑了通常在常规分析中通常忽略的吸力效应。假定地下水位以上为非饱和土壤剖面，并通过适当的土壤-水特征曲线估算土壤吸力值。从全部和部分浸没水平开始，通过改变无量纲的吸力参数，对快速和缓慢下降条件进行稳定性分析。讨论了沉降过程的结果和实际意义，表明负孔隙水压力可以显着加速安全的沉降过程。

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