（上海市机械施工集团有限公司， 上海 200072）

［摘要］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。

［关键词］RJP工法； 深基坑； 抽降承压水

中图分类号： TU471 文献标识码： A文章编号：  1002-848X(2016)S1-0742-04

Method and application of using RJP-reinforcement instead of confined water

 dewatering in deep excavation

Zhou Zheng

 (Shanghai Mechanized Construction Group Co., Ltd., Shanghai 200072, China)

Abstract: 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.

Keywords: RJP; deep excavation; confined water dewatering