| Citation: |
TANG Zhigang, QIAN Jing, XIE Mengyu, SUN Xiaoqian, MENG Xianzhong, ZHANG Fengming. 2024. Analysis of coal mining subsidence characteristics and stability based on InSAR monitoring data: A case study of the Mining and Land Integration Demonstration Zone in Pei County of Jiangsu Province. Geological Survey of China, 11(4): 132-139. doi: 10.19388/j.zgdzdc.2023.267
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Analysis of coal mining subsidence characteristics and stability based on InSAR monitoring data: A case study of the Mining and Land Integration Demonstration Zone in Pei County of Jiangsu Province
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Abstract
In order to identify the spatiotemporal development characteristics, development trends, and risk levels of coal mining subsidence areas in Peixian County of Jiangsu Province, and better guide geological disaster prevention and ecological environment restoration work, the authors in this paper carried out the surface subsidence monitoring using multi period Sentinel-1 satellite synthetic aperture radar interferometry data technology, based on the analysis of coal mining data and field investigation results. By analyzing the surface deformation of the coal mining subsidence area from 2018 to 2022 using InSAR monitoring data, the authors concluded that the surface of the subsidence area had sunk by 0.139 to 0.558 meters from 2018 to 2022, and the surface subsidence rate of the subsidence area was 0.000 to 2.159 mm/d from June to December in 2022. The settlement amount of the stable subsidence goaf (old goaf) has approached its maximum value, and the settlement rate is gradually decreasing and approaching 0. The settlement amount and settlement rate of the unstable subsidence goaf (new goaf) started from 0 and gradually increased. The unstable subsidence area was approximately 18.45 km2 at the end of 2022, mainly distributed in Zhangshuanglou and other coal mines explored in the past 5 years. The surface InSAR data could better reflect the deformation characteristics. This study could provide some scientific basis for the comprehensive management of coal mining subsidence areas in Pei County, and provide some references for characteristic analysis and comprehensive management of coal mining subsidence areas in other similar regions. -
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References
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TANG Zhigang, QIAN Jing, XIE Mengyu, SUN Xiaoqian, MENG Xianzhong, ZHANG Fengming. 2024. Analysis of coal mining subsidence characteristics and stability based on InSAR monitoring data: A case study of the Mining and Land Integration Demonstration Zone in Pei County of Jiangsu Province. Geological Survey of China, 11(4): 132-139. doi: 10.19388/j.zgdzdc.2023.267
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