劈裂灌浆技术在工农水库土坝防渗加固处理中的应用

Application of splitting grouting technique to anti-seepage regulation of the earth dam of Gongnong Reservoir

在众多的病险土坝中,渗漏破坏占了很大的比例。劈裂灌浆技术是处理此问题常见的一种手段。本文以工农水库为例,对劈裂灌浆的劈裂孔布置、灌浆压力、灌浆浆液物理力学性能及灌浆时坝坡稳定验算进行了具体分析。并对灌浆施工过程中的技术要点作了简单介绍。劈裂灌浆技术适应范围广,能够在不释放原坝体应力的条件下构造竖直连续的浆体防渗帷幕,同时使原坝体的防渗能力得到恢复或提高。在处理相同问题的情况下,劈裂灌浆技术具有明显的优势。

In many hanzard earth dams,seepage destruction taken a large proportion.Splitting grouting technique is an effective way to deal with these problems.This article taken Gongnong Reservoir for a case study to elaborate the layout of grouting holes,grouting pressure,grouting slurry and slope stability for splitting grouting specifically.It also had a simple description for technical points in grouting construction.Splitting grouting technique has a wide application.The technique can build a vertical and continuous anti-seepage curtain while not releasing the stress of the original dam and can also restore or improve the anti-seepage ability of the original dam.Splitting grouting technique has obvious advantages when handling same problem.