Monitoring and Analysis of Land Subsidence in Jiaozuo City (China) Based on SBAS-InSAR Technology

Yong Han, Guangchun Liu (), Jie Liu, Jun Yang, Xiangcheng Xie, Weitao Yan and Wenzhi Zhang
Additional contact information
Yong Han: School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo 454000, China
Guangchun Liu: School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo 454000, China
Jie Liu: School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo 454000, China
Jun Yang: Jingjiang Bureau of Hydrological and Water Resources Survey, Jingjiang 434099, China
Xiangcheng Xie: Jingjiang Bureau of Hydrological and Water Resources Survey, Jingjiang 434099, China
Weitao Yan: School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo 454000, China
Wenzhi Zhang: School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo 454000, China

Sustainability, 2023, vol. 15, issue 15, 1-22

Abstract: Jiaozuo, located in the northwest of Henan Province, is one of the six major anthracite production bases in China. It is susceptible to land subsidence due to over a hundred years of mining history, continuous urbanization, frequent human activities, etc., which poses a great threat to urban infrastructure construction and people’s production and lives. However, traditional leveling techniques are not sufficient for monitoring large areas of land subsidence due to the time-consuming, labor-intensive, and expensive nature of the process. Furthermore, the results of conventional methods may not be timely, rendering them ineffective for monitoring purposes. With the continuous advancement of urbanization, land subsidence caused by groundwater extraction, ground load, and other factors in daily life poses a great threat to urban infrastructure construction and people’s production and lives. In order to monitor the land subsidence in the area of Jiaozuo city, this article uses the Sentienl-1A satellite data covering the city from March 2017 to March 2021 to obtain the accumulated land subsidence and the average land subsidence rate based on the Small Baselines Subset InSAR (SBAS-InSAR) technology. The results indicate that the surface of Jiaozuo area is generally stable, and there has been no large-scale settlement. The settlement rate is roughly between −1 mm/a and 2.2 mm/a, and the areas with obvious land subsidence are mainly located in the southeast and east of Jiaozuo city center. After field investigation, it was found that the land subsidence is mainly caused by two reasons: groundwater excessive mining and excessive surface load. In the northeast of Jiaozuo city, there is a certain uplift area. After on-site investigation, it was found that the area is connected to a tailings pond of an aluminum mine, constantly accumulating abandoned rock masses and sediment, causing an annual uplift rate of +6~+ 24 mm/a. The large-scale extraction of groundwater from farmland in the urban–rural integration area for irrigation of wheat has led to the settlement of buildings in the area with a rate of −11–−74 mm/a.

Keywords: Sentienl-1A; SBAS; InSAR; land subsidence; Jiaozuo (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/15/15/11737/pdf (application/pdf)
https://www.mdpi.com/2071-1050/15/15/11737/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:15:y:2023:i:15:p:11737-:d:1206386

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().