测绘通报 ›› 2022, Vol. 0 ›› Issue (9): 123-128.doi: 10.13474/j.cnki.11-2246.2022.0276

• 技术交流 • 上一篇    下一篇

时序InSAR北京地区地表沉降监测与分析

龚高太1, 李佳豪2, 周吕2,3, 刘志荣1, 黄良珂2,3, 刘立龙2,3   

  1. 1. 湖南省地质测绘院, 湖南 衡阳 421001;
    2. 桂林理工大学测绘地理信息学院, 广西 桂林 541004;
    3. 广西空间信息与测绘重点实验室, 广西 桂林 541004
  • 收稿日期:2021-12-14 发布日期:2022-09-30
  • 通讯作者: 李佳豪。E-mail:lijiahao_glut@163.com
  • 作者简介:龚高太(1977—),男,高级工程师,主要从事测绘方面的研究工作。E-mail:657397931@qq.com
  • 基金资助:
    广西科技计划(桂科AD19110107);广西高校中青年教师科研基础能力提升项目(2020KY06032);国家自然科学基金(42064003);广西自然科学基金(2018GXNSFBA050006)

Monitoring and analysis of surface subsidence in Beijing by time series InSAR

GONG Gaotai1, LI Jiahao2, ZHOU Lü2,3, LIU Zhirong1, HUANG Liangke2,3, LIU Lilong2,3   

  1. 1. Instiute of Geological Surveying and Mapping of Hunan Province, Hengyang 421001, China;
    2. College of Geomatics and Geoinformation, Guilin University of Technology, Guilin 541004, China;
    3. Guangxi Key Laboratory of Spatial Information and Geomatics, Guilin 541004, China
  • Received:2021-12-14 Published:2022-09-30

摘要: 针对北京地区地表沉降现象,本文采用时序InSAR方法获取了2018—2020年的沉降速率场与累计沉降量场,并选取特征区域及不同空间跨度的两条地铁线路进行具体沉降分析。结果表明:①北京地区不均匀沉降现象较为明显,总体呈现西部抬升、东部沉降的空间分布特征;②存在3个较明显的沉降漏斗,最大累计沉降量达-218.5 mm;③朝阳区存在金盏沉降漏斗及豆各庄沉降漏斗,且两个沉降漏斗在本文研究时间跨度内均呈扩大趋势;④地铁5、6号线均存在不同程度的沉降与抬升现象,沉降现象与地下水及地下空间的过度开采存在一定的关系,而地区抬升现象与南水北调工程对地下水的补充存在相关关系。

关键词: 北京地区, 时序InSAR, 沉降漏斗, 地铁沉降

Abstract: Aiming at the phenomenon of surface settlement in Beijing, this paper uses the time series InSAR method to obtain the settlement rate field and cumulative settlement field during 2018—2020, and selects two subway lines in characteristic areas and different spatial spans for specific settlement analysis. The results show that: ①The phenomenon of uneven settlement in Beijing is obvious, which generally presents the spatial distribution characteristics of uplift in the west and settlement in the east.②There are three obvious settlement funnels, and the maximum cumulative settlement is -218.5 mm.③There are Jinzhan settlement funnel and Dougezhuang settlement funnel in Chaoyang district, and both settlement funnels show an expanding trend in the time span of this study.④There are different degrees of subsidence and uplift in metro lines 5 and 6. The subsidence phenomenon is related to the overexploitation of groundwater and underground space, and the regional uplift phenomenon is related to the supplement of groundwater by the South-to-North Water Transfer Project.

Key words: Beijing area, time series InSAR, settlement funnel, subway settlement

中图分类号: