水泥土搅拌桩防渗墙施工技术在北营水库除险加固工程中的应用

Applying the Technique of Constructing Diaphragm Wall Formed by Cement soil Agitation Piles in Beiying Reservoir Danger-obviating Project

清徐县北营水库除险加固工程,防渗墙工程量约为34 543 m2,工程量大、工期紧、防渗质量要求高。为确保工程质量,加快施工进度,采用三头深层搅拌桩机一次成墙施工技术。文中介绍三头深层搅拌桩机设备,水泥土搅拌桩施工方法、施工参数及防渗效果。

In Beiying Reservoir Danger-obviating project of Qingxu County, the construction area of diaphragm wall is about 34543 m2. Its quantity of works is large; construction period is pressing and the quality demand is severe. In order to ensure works＇ quality and to quicken the construction speed, the construction technique by three bits deep agitation pile machine to build diaphragm device of this machine and expounds the construction parameters and the effect of seepage control. step wall at one step had been adopted. The paper introduces the method to build the cement soil agitation pile, its construction