定层高压旋喷注水扰动超厚砂性大粉质粘土、粉土辅助预制桩沉桩工法

Rotary jetting injection perturbation under fixed-layer high pressure large super-thick sandy clay and silt soil,driving of auxiliary precast piles

以天津陈塘热电三期、9号双曲线冷却塔基础预应力管桩、沉桩过程遇超厚砂性大粉质粘土、粉土后,采用定层高压旋喷注水扰动辅助预制桩沉桩工法的施工过程为例,阐述了该工法的工艺原理、施工方法及适用范围.

In the construction of ground prestressed pipe pile for the hyperbola cooling tower#9 in the third stage project of in Tianjin Chentang Thermal Power Plant,during the pile sinking process,the large super-thick sandy clay and silt soil is encountered.Taking the construction process of rotary jetting injection perturbation under fixed-layer high pressure for example,the technological principle,construction method and applicable scope of this method are described in detail.