河南理工大学学报（自然科学版）2025，Vol.44Issue(6)：127-136,10.DOI:10.16186/j.cnki.1673-9787.2023100012
郑州地铁沿线地表形变时空演变规律及典型站点沉降机理分析
Study on spatiotemporal evolution of surface deformation along Zhengzhou metro corridors and settlement mechanisms at representative stations
摘要
Abstract
Objectives The surface deformation during metro operation and maintenance has become one of the most challenging issues for the current urban construction,planning and management departments,se-verely constraining healthy and sustainable urban development.Monitoring surface deformation along the metro corridors in Zhengzhou and characterizing its subsidence patterns and governing laws are of practical significance for mitigating potential risks during operation and maintenance,and for safeguarding public safety.Methods The main urban area of Zhengzhou is adopted as the study area,with 88 Sentinel-1A as-cending orbit images(February 2016-January 2022)utilized.An MT-InSAR deformation inversion frame-work is employed to retrieve the time-series deformation fields and linear deformation-rate fields,and the spatiotemporal evolution of surface deformation within buffer zones along the metro lines is investigated.The subsidence curves for the representative Shamen station were denoised,using a Bayesian estimation algo-rithm grounded in probabilistic modeling.Measurement noise was removed and the subsidence-rate charac-teristics and sinking mechanism of the station were analyzed.Results The results indicate that the signifi-cant subsidence zones are mainly concentrated in the eastern,northwestern,and southwestern regions of the main urban area.Among them,Huiji District in the northwest(Line 2)and Jinshui District(Lines 1 and 5)in the east exhibit the most pronounced subsidence,with maximum rates of 16 mm/a and 12 mm/a re-spectively The Shamen Station,located at the intersection of Lines 2 and 4,exhibits a subsidence-trough apex whose subsidence rate over the initial,active,and recession phases conforms to a logistic time-function curve.The primary cause for the surface double subsidence funnels above Shamen station within re-stricted mining areas is groundwater drainage during metro operation and maintenance.The twin subsidence funnels at the surface observed above the station are primarily attributed to groundwater drainage during metro operation and maintenance.Conclusions The findings elucidate the mechanisms of surface subsid-ence and provide a theoretical basis and technical reference for the prevention and mitigation of surface de-formation hazards in urban metro corridor zones.关键词
地下水环境/地表形变/地铁/MT-InSAR/机理分析Key words
groundwater environment/surface deformation/metro/MT-InSAR/mechanistic analysis分类
天文与地球科学引用本文复制引用
李春意,王政玺,王文杰,丁来中,荆莹,买志瑶,李宾,郑月松..郑州地铁沿线地表形变时空演变规律及典型站点沉降机理分析[J].河南理工大学学报（自然科学版）,2025,44(6):127-136,10.基金项目
国家自然科学基金资助项目(41671507,U1810203) （41671507,U1810203）
河南省科技攻关项目(212102310404) （212102310404）
国网河南省电力公司科技项目(5217L0230004) （5217L0230004）
测绘科学与技术"双一流"学科创建项目(BZCG202301) （BZCG202301）
自然资源部矿山时空信息与生态修复重点实验室开放基金项目(KLM202303) （KLM202303）
河南省自然资源厅科研项目(2023-6) （2023-6）
