广东水利水电Issue(10)：42-47,74,7.
多层承压水地层基坑抗渗流和抗承压水稳定性分析
Analysis of the Seepage Resistance and Stability against Confined Water of Foundation Pit in Multi-layer Confined Water Stratum
摘要
Abstract
This paper aims to investigate calculation methods and evaluation criteria for the anti-seepage stability and confined water stability of foundation pits in multi-layered confined water strata.The study extends the theoretical principles of the water interception and heaving calculation formulas from the current Technical Specification for Retaining and Protection of Building Foundation Excavations(JGJ 120-2012)to foundation pits in multi-layered confined water strata,enabling quantitative analysis of their anti-seepage stability and confined water stability.Using theoretical analysis and Midas GTS NX seepage analysis,detailed stability calculations against seepage and confined water were conducted for a shield launch shaft project in a multi-layered confined water stratum as an engineering case study.The research demonstrates that in multi-layered confined water strata,stability against heaving is more prone to failure compared to stability against seepage and must be prioritized.To address insufficient heaving stability,seepage control measures involving decompression and dewatering were proposed.The effectiveness of these measures was verified through calculations.This study not only provides a scientific basis for the design calculations of foundation pit engineering in multi-layered confined water strata but also offers valuable references for the safe construction of similar projects.关键词
基坑工程/截水/多层承压水/突涌/渗控措施/稳定性Key words
foundation pit engineering/water interception/multi-layer confined aquifer/piping(bursting)/seepage control measures/stability分类
建筑与水利引用本文复制引用
李支令,陈富强,贾恺,孙昌利,骆冠勇..多层承压水地层基坑抗渗流和抗承压水稳定性分析[J].广东水利水电,2025,(10):42-47,74,7.基金项目
韩江榕江练江水系连通后续优化工程科研项目(编号:CE682025000646) （编号:CE682025000646）
