摘要
传统基坑降水方法对地下水位的实时监测和控制能力有限。本文研究了一种基于悬挂式止水帷幕的深基坑智能降水系统,该系统可以实时监测基坑内外水位的变化,能够有效控制基坑降水深度。通过改变悬挂式止水帷幕的插入深度和降水深度开展了基坑智能降水室内试验研究,首先分析了降水深度对坑内抽水间隔的影响,进一步研究了不同降水深度和止水帷幕插入深度条件下坑外水位的变化规律。结果表明:在智能降水过程中,基坑内外水位高度呈波浪形变化;随着基坑降水深度的增大,降水系统抽水频率加快,坑外水位的波动幅值减小;止水帷幕深度对坑外水位的波动影响较小,而随着止水帷幕深度的增加,坑外水位显著降低。
The traditional foundation pit dewatering method has limited real-time monitoring and control capabilities for groundwater level.This paper studies an intelligent dewatering system for deep foundation pits with suspended impervious curtain.The system can monitor the changes in water levels inside and outside the foundation pit in real time and effectively control the depth of foundation pit dewatering.An indoor experimental study on intelligent dewatering of foundation pits was conducted by changing the insertion depth and dewatering depth of the suspended impervious curtain.Firstly,the influence of dewatering depth on the pumping interval inside the pit was analyzed,and further research was conducted on the variation law of the water level outside the pit under different dewatering depths and the insertion depth of the impervious curtain.The results show that during the intelligent dewatering process,the water level height in the foundation pit changes in a wave shape;as the depth of foundation pit dewatering increases,the pumping frequency of the dewatering system accelerates,and the fluctuation amplitude of the water level outside the pit decreases;the depth of the impervious curtain has a relatively small impact on the fluctuation of the water level outside the pit,but as the depth of the impervious curtain increases,the water level outside the pit significantly decreases.
作者
任向阳
REN Xiangyang(China Railway Construction Group Co.Ltd.,Beijing 100040,China)
出处
《铁道建筑技术》
2024年第5期56-59,共4页
Railway Construction Technology
基金
中国铁建股份有限公司科技研发计划项目(2020-C38)。
关键词
基坑智能降水
悬挂式止水帷幕
坑外水位
智能降水系统
intelligent dewatering of foundation pit
suspended impervious curtain
external pit water level
intelligent dewatering system
