InSAR技术支持下的长沙市2015—2021年地面沉降监测分析

doi:10.13474/j.cnki.11-2246.2023.0212

测绘通报 ›› 2023, Vol. 0 ›› Issue (7): 125-130.doi: 10.13474/j.cnki.11-2246.2023.0212

InSAR技术支持下的长沙市2015—2021年地面沉降监测分析

杨建成¹, 何阳¹, 刘一鸣¹, 熊雄¹, 姚海鹏¹, 李雪宇¹, 文武飞¹, 王灵珏¹, 胡妙文², 许兵²

1. 湖南省地质调查所, 湖南长沙 410116;
2. 中南大学地球科学与信息物理学院, 湖南长沙 410083

收稿日期:2023-03-21 出版日期:2023-07-25 发布日期:2023-08-08
通讯作者: 何阳。E-mail:694612453@qq.com
作者简介:杨建成(1965-),男,高级工程师,主要从事水工环调查工作。E-mail:84477832@qq.com
基金资助:
湖南省地质院科研项目(HNGSTP202324);湖南省自然资源厅“长沙市地面沉降风险评估与区划”项目;国家自然科学基金青年项目(41804008)

Monitoring and analysis of the subsidence in Changsha from 2015 to 2021 based on InSAR technique

YANG Jiancheng¹, HE Yang¹, LIU Yiming¹, XIONG Xiong¹, YAO Haipeng¹, LI Xueyu¹, WEN Wufei¹, WANG Lingjue¹, HU Miaowen², XU Bing²

1. Geological Survey of Hunan Institute, Changsha 410116, China;
2. School of Geoscience and Info-Physics, Central South University, Changsha 410083, China

Received:2023-03-21 Online:2023-07-25 Published:2023-08-08

摘要/Abstract

摘要： 长沙市是长江中游地区重要的中心城市,地质条件脆弱、土质疏松,土体在施工和降雨作用下极易固结压实,造成地面形变,威胁建筑物和基础设施的稳定。地面沉降是长沙市地质灾害的主要原因之一。为了监测长沙市近几年的地面沉降情况,本文使用MCTSB-InSAR方法,利用151景Sentinel-1SAR影像数据,获取了长沙市主城区2015—2021年的地面沉降结果。经分析发现,最大累计沉降量约为250 mm,最大沉降速率约为80 mm/a,绝大部分区域平均沉降速率在30 mm/a以下;长沙市整体稳定,局部有不均匀沉降发生,沉降区域主要分布在主城区外围,主要由工程施工引起。

关键词: 地面沉降, MCTSB-InSAR, 长沙市主城区, 沉降发育, 施工建设

Abstract: Changsha city is an important central city in the middle reaches of Yangtze River. The geological condition is fragile and the soil is loose. Under the action of construction and rainfall, the soil is easy to consolidate and compact, resulting in ground deformation and threatening the stability of buildings and infrastructure. Land subsidence is one of the main causes of geological disasters in Changsha city. In order to monitor the land subsidence of Changsha city in recent years, we use the technology of MCTSB-InSAR and 151 Sentinel-1 data to obtain the land subsidence results of the main urban area of Changsha City from 2015 to 2021. The results show that the maximum accumulated settlement is about 250 mm, the maximum settlement rate is about 80 mm/a, and the average settlement rate in most areas is below 30 mm/a. The overall stability of Changsha city, local uneven settlement occurred, settlement area mainly distributed in the periphery of the main city, mainly caused by engineering construction.

Key words: land subsidence, MCTSB-InSAR, the main urban area of Changsha city, subsidence development, construction

中图分类号:

P237
258

杨建成, 何阳, 刘一鸣, 熊雄, 姚海鹏, 李雪宇, 文武飞, 王灵珏, 胡妙文, 许兵. InSAR技术支持下的长沙市2015—2021年地面沉降监测分析[J]. 测绘通报, 2023, 0(7): 125-130.

YANG Jiancheng, HE Yang, LIU Yiming, XIONG Xiong, YAO Haipeng, LI Xueyu, WEN Wufei, WANG Lingjue, HU Miaowen, XU Bing. Monitoring and analysis of the subsidence in Changsha from 2015 to 2021 based on InSAR technique[J]. Bulletin of Surveying and Mapping, 2023, 0(7): 125-130.

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InSAR技术支持下的长沙市2015—2021年地面沉降监测分析

Monitoring and analysis of the subsidence in Changsha from 2015 to 2021 based on InSAR technique

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