地球信息科学学报 ›› 2018, Vol. 20 ›› Issue (1): 128-137.doi: 10.12082/dqxxkx. 2018.170287

• 遥感科学与应用技术 • 上一篇    

基于InSAR数据的北京地铁6号线地面沉降监测分析

刘凯斯(), 宫辉力*(), 陈蓓蓓   

  1. 1. 三维信息获取与应用教育部重点实验室,北京 100048
    2. 城市环境过程与数字模拟国家重点实验室培育基地,北京 100048
    3. 首都师范大学资源环境与旅游学院,北京 100048
  • 收稿日期:2017-06-26 修回日期:2017-09-28 出版日期:2018-01-20 发布日期:2018-01-20
  • 通讯作者: 宫辉力 E-mail:994761911@qq.com;gonghl@263.net
  • 作者简介:

    作者简介:刘凯斯(1989-),女,博士生,主要从事北京地铁地面沉降研究。E-mail: 994761911@qq.com

  • 基金资助:
    国家自然科学基金重点项目(41130744);国家自然科学基金面上项目(41171335);国家自然科学基金项目(4140010982)

Monitoring and Analysis of Land Subsidence of Beijing Metro Line 6 Based on InSAR Data

LIU Kaisi, GONG Huili*(), CHEN Beibei   

  1. 1. Key Lab of 3D Information Acquisition and Application, Ministry of Education, Beijing 100048, China
    2. The State Key Laboratory of Breeding Base of Process of Urban Environment and Digital Simulation, Beijing 100048, China
    3. College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China
  • Received:2017-06-26 Revised:2017-09-28 Online:2018-01-20 Published:2018-01-20
  • Contact: GONG Huili E-mail:994761911@qq.com;gonghl@263.net
  • Supported by:
    National Natural Sceience Foundation of China, No.41130744, 41171335, 4140010982.

摘要:

本文以北京市地铁6号线为研究区,采用PS-InSAR技术对研究区53景Terra SAR影像进行永久散射体干涉处理,获取了研究区地面沉降信息,初步揭示了线状研究区的地面沉降空间分布特征,进一步结合层次熵值法,定位6号线典型路段,深入分析了地面沉降发展的严重程度及不均匀性。研究结果表明:① 6号线沿线自西向东沉降速率增大,最大年沉降速率为77.2 mm/a,出现在常营—草房路段;② 综合熵值以金台路站为分界,西侧熵值小(小于0.5),东侧接近或大于1,金台路以东路段沉降量大,且不均匀沉降严重;③ 在地质条件相似的金台路-十里堡、青年路-褡裢坡、黄渠-草房3个路段内,沉降严重程度同时受年沉降速率、斜率、曲率半径变化驱动,且相关性强。

关键词: PS-InSAR, 地面沉降, 层次熵值法

Abstract:

:In this paper, we choose the Beijing Metro Line 6 as the study area. The land subsidence is obtained by using PS-InSAR technique, and the spatial distribution characteristics of subsidence in the study area are analyzed. We further combine hierarchical entropy method to locate the typical section of Line 6. The severity and uneven of subsidence is also analyzed. The main conclusions are as follows: (1) The rate of subsidence from west to east along the line 6 is gradually increasing, and annual maximum subsidence rate is 77.2mm/a, which appears in the ChangYing-CaoFang section; (2) The integrated entropy is divided by the JinTaiLu Station, the west side has a small entropy (less than 0.5), and the east side is close to 1 or greater than 1. The subsidence of the east side of JinTaiLu Station is serious. It is pronounced uneven subsidence. (3) In the three sections of JinTaiLu - ShiLiPu, QingNianLu - DaLianPo, HuangQu - CaoFang, the subsidence severity is affected by the annual subsidence rate, slope, curvature radius, and the correlation is strong.

Key words: PS-InSAR, land subsidence monitoring, hierarchical entropy method