深基坑工程采用RJP工法封底加固以取代抽降承压水的方法及工程应用

Method and application of using RJP-reinforcement instead of confined water dewatering in deep excavation

提供了一种通过RJP工法封底加固替代抽降承压水的新思路及工艺方法。该方法通过RJP满堂加固与工程桩紧密咬合形成整体以解决承压水抗突涌稳定问题,可以减少止水帷幕的插入深度,并避免抽降承压水对环境设施的扰动。该方法在邻近地铁设施的深基坑工程中取得了良好的实践效果。

This paper presents a new method of using RJP-reinforcement instead of confined water dewatering. The method utilizes RJP-reinforcement and structure piles to resist the inrushing of confined water. With this method,the length of curtain for cutting off water can be reduced,and the environment influence of confined water dewatering can be avoided.The method was applied in a deep exaction nearing metro utilities successfully.