Question

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Lateral deformations of the crest of an embankment dam are expected immediately after filling, with the maximum amount of lateral movement expected at the highest cross section of the dam. The amount of deflection will be directly related to the height of the dam as well as its composition. An acceptable value of deflection after filling is difficult to predict for any size embankment dam. The key consideration for the dam owner and the engineer is that vertical settlement or lateral deflection of the crest of an embankment dam should decrease in rate over time for a constant loading condition. A sudden or even gradual increase in the rate of vertical or lateral movement should be cause for further evaluation.
Piezometric levels within the core of a zoned embankment dam may be higher immediately after construction due to pore pressure build-up from compaction operations and consolidation due to the weight of the overlying embankment. However, after filling, these excess pressures should dissipate over time and should shift to a steady state phreatic condition. Predicted piezometric levels will obviously vary with size and type of dam, height of reservoir, etc., and acceptable ranges cannot be quantified except on an individual basis, with one critical exception, embankment zones that are designed to be unsaturated.

Answer 1

侧向位移的堤防坝后立即将充填,最多的横向运动的最高的横截面的水坝。变形量,将直接关系到高度的大坝以及其组成。一个可接受的价值的挠度灌装后是很难预测的任何大小的堤防工程。重点考虑对大坝业主和工程师,或侧偏转的竖向沉降的水坝应该减少路基在利率随着时间的推移,加载条件不变。突然或者甚至是逐渐增加的纵向或横向运动的速度应该引起进一步评估。
示压水平核心的一划路基可能高于大坝施工后立即孔压实作业和巩固积聚从其覆盖的河堤。然而,这些多余的压力,灌装后应随时间而消散,应转变稳态潜水状态。预计会明显不同层次和示压的尺寸和类型的水库大坝、高度等,可接受的范围不能量化,除了在个人能力上与一个例外,路堤区,均为不饱和。