高压摆喷注浆在长沙市堤防建设中的应用

为防止长沙市21.8km重点堤防的管涌、涌漏等隐患，提高堤防的抗洪能力,采用高压摆喷浆施工对其进行了整修、加固。较详细地介绍了设备的选择、孔间距及工艺参数的调整、工序安排和工程质量及检测方法。堤防中摆喷连结心墙的围井检测表明，高喷注浆是处理长沙市防洪堤防第四系松散地基的一项设备简便、噪音小、施工快、成本低、防渗效果好的工艺。

THE APPLICATION OF HIGH-PRESSURE SHOTCRETE ON THE DYKE CONSTRUCTION IN CHANGSHA

In according to prevent the hidden dangers of piping and leakage in the dyke with 21.8 km long along Xiangjiang River in Changsha and enhance theiv flood-proof ability , we repair and fasten it in the way of high-pressure shotcrete. This paper introduces the selection of instruments, adjustment of the distance of drill hole technological parameter, management of processes prospecting method of engineering quality and examination method. The prospecting results show that the method of high-pressure shotcrete is one of the better methods for deal with the flood-prevent bank of Changsha city.