黄河堤防劈裂灌浆试验分析

Analysis on Splitting Grouting Tests for the Yellow River Embankments

黄河大堤劈裂灌浆试验表明,可以形成顺堤向具有较密实的连续浆脉,截渗效果明显。堤身的几何尺度、内在质量、施工工艺等是影响浆脉厚度的主要因素。要提高施工工艺水平,应掌握好布孔间距、复灌间隔时间、复灌次数及注浆管周围封堵等环节。

It is shown by the tests of splitting grouting done for the Yellow River embankments that better continuous and dense grout vein along the dyke can be formed and the effectiveness of impermeability is remarkable. The geometric yardstick, internal quality and construction technology of the dyke body are the main factors which would effect the thickness of grouting. Only by controlling fairly the hole spacing, secondary grouting time interval, number of secondary grouting and seal around grouting pipe can the construction technology be improved.