大任水库土坝劈裂灌浆防渗设计

介绍了大任水库土坝劈裂灌浆的布孔设计、灌浆材料的选择、灌浆方法、灌浆压力、浆液浓度及变浆原则以及施工中出现的“异常”现象分析及处理方法。在浆液设计中采用粘土比例占 70 %～ 90 %的粘土水泥浆 ,不仅降低了防渗体的弹模值 ,而且达到了良好的防渗效果

Seepage prevention design for the Daren reservoir earth dam's split grouting

The author introduces the boreholes layout and design of the Daren reservoir earth dam's split grouting, the grouting material selection, grouting method, pressure, slurry density and changing slurry principle,abnormal phenomena analysis and dealing method, etc. The clay-cement mortar with clay in 70～90 percentage is adopted in slurry design. It brings down the elasticity value of seepage prevention body and attains good seepage prevention effect.