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2023 Vol. 34, No. 1
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Article navigation > The Chinese Journal of Geological Hazard and Control > 2023 > 34(1): 49-57
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LIU Zhenlin, WANG Ying, KE Xiaobing, LUO Xiyi. Distribution characteristics and causes of land subsidence in Nansha District, Guangzhou[J]. The Chinese Journal of Geological Hazard and Control, 2023, 34(1): 49-57. doi: 10.16031/j.cnki.issn.1003-8035.202108023
Citation: LIU Zhenlin, WANG Ying, KE Xiaobing, LUO Xiyi. Distribution characteristics and causes of land subsidence in Nansha District, Guangzhou[J]. The Chinese Journal of Geological Hazard and Control, 2023, 34(1): 49-57. doi: 10.16031/j.cnki.issn.1003-8035.202108023
shu

Distribution characteristics and causes of land subsidence in Nansha District, Guangzhou

  • 1.

    Graduate School of Chinese Academy of Geological Sciences, Beijing　100037, China

  • 2.

    Qingdao Institute of Marine Geology, China Geological Survey, Qingdao, Shandong　266071, China

  • 3.

    Faculty of Engineering, China University of Geosciences, Wuhan, Hubei　430074, China

  • 4.

    Guangdong General Geological Environment Monitoring Station, Guangzhou, Guangdong　510510, China

  • 5.

    Foshan Geological Bureau, Foshan,Guangdong　528099, China

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Received Date:  24 August 2021
Revised Date:  01 November 2022
Accepted Date:  07 December 2022
Publish Date:  25 February 2023
    Abstract

  • Land subsidence in Nansha District has affected urban development and the safety of people’s lives and properties. In order to formulate scientific and effective measures to prevent the further development of land subsidence, this paper summarizes and analyzes the distribution characteristics of land subsidence based on InSAR monitoring data and level monitoring data, the surface deformation is mostly severe settlement in a small and local area. On this basis, for 6 areas with subsidence. The mechanism model is used to quantitatively estimate the amount of land subsidence caused by each factor and its proportion. The subsidence caused by the compressible soil layer was 34.43−96.97 mm/a, the proportion is between 37.07% and 75.67%, and the largest influence proportions of groundwater level and ground load are 26.28% and 52.40%. And through research and analysis of the main factors and impact of land subsidence, this paper provide a scientific basis for scientific prevention and control of land subsidence in this area.

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