三重管定喷止水技术在水中挖孔桩的应用

Application of Waterproof with Triple Tubes Directional Jet in Excavated and Cast-in-place Pile under Water

针对水中施工挖孔桩 ,条件受到限制、地层中含水量较大 ,为尽可能避免造成对河道的占用与影响 ,采用三重管定喷技术做止水帷幕 ,有效地解决了成孔成桩过程中涌水等问题 ,保证了工程施工的安全与质量。

This paper effectively deals with water inflow for excavated and cast-in-place pile under water with the constrained condition and strataof large water content during the courseof forming hole and casting pile by using triple tubes directional jet as waterproof curtain, to decrease the compression for river channel, and ensure safety and quality in the phase of construction.