Identification of surface deformation caused by geothermal resource extraction using SBAS time-series technology

doi:10.13474/j.cnki.11-2246.2022.0041

Abstract

Abstract: This article takes the Xiongan New Area, which is rich in geothermal resources, as the research object. Using SBAS technology to process 42 Sentinel-1 regional satellite images from July 2015 to February 2019 and 10 ALOS-2 regional satellite images from August 2016 to December 2018 to obtain the time-series surface deformation of Xiongan New Area. The results of the study show the Subsidence of Xiongan New Area is serious, and the subsidence areas are mainly concentrated in Xiong County and Rongcheng County. Among them, Xiong County has the most serious subsidence. The accumulated subsidence of the center exceeds 330 mm. The cumulative subsidence of the subsidence center in Rongcheng County exceeds 120 mm. Combining the location of geothermal wells and the history of geothermal exploitation, time-series analysis shows that large-scale exploitation of geothermal resources will cause surface subsidence.and the accumulated subsidence of the subsidence.

Key words: geothermal, ground subsidence, SBAS technology, Xiongan New Area, resource exploitation

CLC Number:

P237

LI Bingfeng, LI Genger, NA Jing, TU Liping, FAN Junlin, WU Yang. Identification of surface deformation caused by geothermal resource extraction using SBAS time-series technology[J]. Bulletin of Surveying and Mapping, 2022, 0(2): 43-49.

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