在对丹江口左岸土石坝二维渗流计算分析的基础上，重点考虑了土石坝与混凝土坝连接段尚存的40m防渗墙缺口段，采用三维渗流有限元计算程序，针对二维渗流分析得到的不利参数组合情况，对心墙有无横向垂直裂缝的渗流状态以及静压注浆体渗控效果进行了计算分析。计算结果表明，静压注浆体弥补了老坝心墙局部尺寸不够的现状，在心墙出现横向垂直裂缝等极端情况下，静压注浆体能够有效控制裂缝渗漏带来的影响。同时，对心墙底部与基岩接触以及心墙与混凝土接触部位的渗透稳定性进行了评价。

On the basis of two dimensional seepage flow calculation of the earth-rock dam at the left bank of the Danjiangkou Dam, some questions about the notch of cut off wall, which length is 40 meters, at the connecting section of the earth-rock dam and the concrete dam was mainly taken into accounted. According to the combination of disadvantage parameters, the seepage state and the effect of static pressure grouting of the core wall with or without vertical cracks was analyzed using three dimensional finite element program of seepage calculation. The calculation showed that the injecting cement paste can make up the partial size shortage of the core wall of the old dam effectively. When the core wall occurs in some extreme conditions such as both transverse and vertical cracks simultaneously, it can control the leakage effectively. The seepage stability of the contact region of the bottom of the core wall and the bedrock, as well as the region of the core wall and the concrete dam, were also evaluated.