在渗流河床砂卵砾石地基建造高压旋喷防渗桩墙的实例分析

The Analysis of the Cases of Building High-voltage Jet Grouting Impermeable Piling Walls on the Foundation of Sandy Gravel Seepage Riverbed

文章介绍了在上游无截渗条件下,在有较多漂石的河床砂卵砾石层中进行高压旋喷灌浆,针对其存在的造孔难、保孔难、灌浆成桩难三大技术难题,通过技术攻关改造设备、改进施工工艺实现顺利施工,并对钻灌作业予以技术质量把关,为在类似复杂地层进行高压旋喷灌浆建造防渗桩墙提供借鉴。

The paper introduces the high-pressure jet grouting in boulder riverbed sandy and pebble layer under the condition of no leakage blocking in the upstream.Aiming at the three major difficulties which are pore forming,pore maintenance and grouting pile,this article thinks that smooth construction can be achieved through improving equipment and technique,and that control the technology quality of drilling and filling,thus providing reference for high-pressure jet grouting and impervious wall construction in similar complex layers.