北京师范大学学报（自然科学版）2025，Vol.61Issue(2)：141-150,10.DOI:10.12202/j.0476-0301.2024119
地铁沿线壅水预测及地基安全风险分析研究
Backwater prediction and foundation safety risk analysis along Metro Line 4 in Jinan
摘要
Abstract
The modern-day metro is key to relieve pressure on urban surface transportation.However,intrusion of the metro system into aquifers may raise risk of rising groundwater levels.With accelerated urbanization in China,it is essential to clarify this risk and assess its impacts.A three-dimensional numerical model coupled with linear metro structure was constructed in this study.Numerical simulation methods were applied to calculate the groundwater level rising values along the typical section of Jinan Metro Line 4 in short and long-term scenarios.The range of groundwater level rising was predicted under short-term scenario.The impact of groundwater level rising on the bearing capacity of shallow foundation along the metro line was calculated.Numerical range of groundwater level rising along the metro line after 1,3 and 10 years of simulation is 12.942-24.839,5.117-17.890,and 2.291-7.869 cm,respectively.The groundwater level rising value decreases to a lower degree after 10 years of simulation,confirming that long-term impact of engineering structure on regional groundwater flow field tends to be weak.In short-term one-year scenario where backwater effect is more obvious,backwater value of groundwater along the research section of rail transit line 4 in flood season ranges from 16.949-28.190 cm,which is 4.485 cm higher than in non-flood season.The backwater phenomenon is distributed along the line and can be divided into two obvious main backwater zones.The reduction rate of foundation bearing capacity affected by backwater is 0.186％-0.589％,the influence of groundwater backwater on foundation safety is relatively insignificant.Based on innovative understanding of influence of groundwater backwater along the linear subway project,this study provides theoretical support for solving geological environmental risks in the planning and construction of Jinan Metro Line 4.关键词
地铁工程/数值模拟/地下水壅高/地基承载力Key words
metro engineering/numerical simulation/groundwater rising/foundation bearing capacity分类
地质学引用本文复制引用
董亚楠,王志文,商金华,徐东辉,何柱锟,黄晨曦,左锐..地铁沿线壅水预测及地基安全风险分析研究[J].北京师范大学学报（自然科学版）,2025,61(2):141-150,10.基金项目
济南轨道交通集团横向科研资助项目(HX2020-B02) （HX2020-B02）
山东省交通运输厅科技计划资助项目(2021B06) （2021B06）
国家重点研发计划资助项目(2020YFC1806601) （2020YFC1806601）
