丹江口大坝接缝(纵、横缝)原设灌浆管道部分阻塞,不能形成循环灌浆系统。经采取措施处理后,大部分满足了要求(详见“丹江口大坝接缝灌浆施工工艺初步总结”一文)。少数不能满足要求的灌区,经采用钻孔法灌浆,也取得了良好的效果。兹将钻孔法灌浆的设计和施工经验介绍如下: 一、钻孔的设针和施工按作用性质,钻孔可分为两种类型:一种是原设灌浆管道全部或大部不能利用,需全部或主要利用钻孔法灌浆,其钻孔称为灌浆孔;另一种是原设 Danjiangkou dam seams (vertical and horizontal joints) of the original grouting pipe partially obstructed, can not form a circulating grouting system. After taking measures to deal with most of the meet the requirements (see “Danjiangkou dam seam grouting construction process preliminary summary” article). A few irrigation areas that can not meet the requirements have also achieved good results after grouting by drilling method. We hereby introduce the design and construction experience of drilling grouting method as follows: 1. Set up the drilling and construction According to the nature of the action, the drilling can be divided into two types: one is that all or most of the original grouting pipes can not be used, All or the main need to use drilling grouting, the drilling hole called grouting; the other is the original design