帷幕灌浆在宝鸡峡渠首加坝加闸工程中的应用

帷幕灌浆是提高坝体抗渗能力的关键。本文对宝鸡峡渠首加坝加闸工程上游帷幕灌浆施工中的灌浆方法、灌浆压力、浆液变换、灌浆结束标准和灌浆封孔等施工工艺进行了详细论述,并通过质量检验证明,在岩基比较破碎,裂隙发育较多的坝基段,采用自上而下分段灌浆法和孔口封闭灌浆法相结合的灌浆方法是比较理想的。

Application of Curtain Grouting in Addition Project of Dam and Gate in Baojixia Dam

The curtain grouting is the key to enhance the anti-percolation ability of a dam. This paper mainly discusses the way of grouting, the pressure of grouting, the conversion of slurry, the sign of the end of grouting and closing holes with grouting etc in the addition project of the dam and gate in Baojixia Dam. By the way of quality examining, we find that in the dam foundation with a lot of fissures and cracked rock foundation it is a better way both to grout from the top to the bottom and to close holes with grouting.