某面板堆石坝垂直缝破损渗漏量估算方法的适用性分析

Influence Analysis of Seepage Leakage due to Waterstop Failure of CFRD Vertical Fracture

面板堆石坝接缝止水破坏产生渗漏量的正确估算对工程安全运行和后期修补具有重要意义。以某面板堆石坝为例,该坝渗漏量明显大于国内其他同类工程,经水下检查发现面板周边缝和垂直缝都有不同程度的破坏。为了解面板垂直缝破坏后对总渗漏量的影响,分别采用阻力系数法和有限单元法对渗漏量进行估算,并与已修补接缝减少渗漏量的估算值进行了对比分析,为后期垂直缝修补提供了参考意见。

The estimate of leakage caused by waterstop failure in CFRD has an important meaning to the safe opera- tion and the late repair of the project. Taking a CFRD for an example, the leakage of this CFRD is significantly higher than other similar engineering. We found the waterstop failure of vertical fracture through underwater inspection. In or- der to understand the impact on the total amount of leakage after the destruction of the vertical fracture, the amount of leakage are calculated by using drag coefficient method and finite element method. Comparative analysis is conducted ac cording to the reduction of leakage caused by the repairing joints. So, it provides reference for repairing vertical fracture in the later period.