三板溪堆石高坝面板局部受损成因初析及修复施工简介

Damage cause and rehabilitation of the face slab of Sanbanxi high rock fill dam

三板溪水电站主坝为国内第二高堆石坝,其面板在蓄水过程中沿一二期水平施工缝发生局部受损,为同类坝型罕见,成因还有待分析确定。设计采用了PBM混凝土修复方案,施工全部潜水40m以上,要求高,难度大。

During water impounding, part of horizontal construction joint on the face slab of Sanbanxi high rockfilled dam was damaged.This was rare and cause reason was not clear yet.PBM concrete was adopted in rehabilitation design.The rehabilitation construction was difficult and of high requirements.