丹江口水利枢纽宽缝重力坝系用柱状分块法浇筑的。纵缝距离为11～27米,横缝距离大多为24米,接缝面由水平三角形或垂直梯形的键槽构成。所有接缝都用垂直和水平的止浆片分区,高度一般为9～15米,每个区内都埋有盒式灌浆管道(见图1)。纵缝形式如图1-1所示,每个出浆盒负担面积4.5米~2,并设有备用灌浆管道;横缝形式如图1-2所示,每个出浆盒负担面积5.4米~2。根据坝体浇筑现状,接缝灌浆区的总面积约43,590米~2。因大坝补强和续建施工,需要预先进行坝体接 The Danjiangkou Water Conservancy Project wide-gap gravity dam system is constructed by columnar block method. The longitudinal seam distance is 11 ~ 27 meters, the transverse seam distance is mostly 24 meters, and the joint surface is composed of horizontal triangle or vertical trapezoidal keyway. All seams are grouted with vertical and horizontal stoppers, typically 9-15 meters in height, with grouting pipes grouped in each section (see Figure 1). Longitudinal joints are shown in Figure 1-1. Each discharge box has an area of ​​4.5m ~ 2 and is equipped with a backup grouting pipe. As shown in Figure 1-2, the cross-sectional shape of each discharge box is 5.4m ~ 2. According to the status of the dam pouring, the total area of ​​the joint grouting area is about 43,590m ~ 2. Due to the reinforcement of the dam and the continued construction, it is necessary to connect the dam body in advance