摘要
在软土深大基坑开挖过程中,高水头承压水对基坑的威胁不容轻视。依托于长江北岸某软土深基坑高压力水头承压水突涌事故,从降低承压水水头方向入手,通过理论计算和数值模拟对比分析现场监测数据,研究通过减压降水降低坑内外承压水水头的工程措施,实现对高压力水头承压水导致的基坑突涌事故的治理。结果表明:坑外施工降水井进行减压降水对于基坑突涌的治理效果显著。
In the process of deep and large foundation pit excavation in soft soil,the threat of high head confined water to foundation pit should not be underestimated.Starting from the direction of reducing confined water head,relying on the high pressure confined water head inrush accident of a deep foundation pit in soft soil of the north bank of the Yangtze River,the paper studies the engineering measures of reducing confined water head inside and outside the pit by decompression precipitation through numerical simulation calculation and comparative analysis of site monitoring data,so as to realize the treatment of pit inrush accident.The results show that decompression dewatering is an efficient and cost saving measure for the treatment of foundation pit water gushing.
作者
陈文昭
朱锋
王文
CHEN Wenzhao;ZHU Feng;WANG Wen(School of Civil Engineering,University of South China,Hengyang,Hunan 421001,China)
出处
《南华大学学报（自然科学版）》
2022年第3期22-28,76,共8页
Journal of University of South China：Science and Technology
基金
国家自然科学基金青年科学基金项目(51708273)
2018年湖南省教育厅科研项目(重点)(18A252)
湖南省自然科学基金青年项目(2017JJ3263)。
关键词
软土深基坑
高压力水头
基坑突涌
坑外降水设计
soft soil deep foundation pit
high pressure head
foundation pit inrush
design of precipitation outside the pit
