城市地质2025，Vol.20Issue(3)：359-367,9.DOI:10.3969/j.issn.2097-3764.2025.03.010
新水情背景下北京平原区地表变形演化特征
Evolutionary characteristics and causes of surface deformation in the Beijing plain under the new hydrological background
摘要
Abstract
Based on long-term surface deformation and groundwater level monitoring data,this study investigates the evolution characteristics of surface deformation in the Beijing plain under the new water situation.The results indicate:1)Land subsidence has significantly decelerated.From 2010 to 2024,the regional annual subsidence decreased from 28.76 mm to 7.24 mm,and the maximum annual subsidence reduced from 135.8 mm to 44.8 mm.Under the new hydrological background,surface uplift emerges in specific areas,reaching a maximum uplift of 26.8 mm in 2024.2)The primary factor driving regional surface uplift in the northern plain is the rebound of the second and third compressible layer groups.Conversely,continuous compression of the third compressible layer group in the eastern and southern areas contributes to ongoing regional subsidence.Surface uplift in the north,first observed in 2021,is primarily controlled by the recovery of storage in deep confined aquifers.As pore pressures in adjacent aquitards equilibrate during groundwater level rebound,the confined aquifers exhibit pore rebound deformation.3)The implementation of the South Water substitution project combined with artificial groundwater recharge has progressively reduced groundwater extraction in the northern plain.Consequently,groundwater levels have shifted from decline to rise,driving a three-stage evolution of surface deformation:continuous subsidence,decelerated subsidence,and uplift.The lagged deformation of cohesive soils during groundwater level recovery accounts for the delayed surface uplift relative to water level rise.关键词
新水情/地表变形/用水格局/演化特征/回补Key words
new hydrological background/surface deformation/water usage pattern/evolutionary characteristics/artificial recharge引用本文复制引用
陶芳芳,夏瑞麟,赵龙,齐鸣欢,李小龙,雷坤超,沙特,刘贺,田苗壮,王新惠..新水情背景下北京平原区地表变形演化特征[J].城市地质,2025,20(3):359-367,9.基金项目
地面沉降和回弹灾害精准识别预警关键技术研究与示范应用(Z231100003823006)、北京市地面沉降监测系统运行(11000022T000000440136)、北京市地面沉降监测网建设工程(2311-110112-04-01-900513)联合资助 （Z231100003823006）
