ISSN 1003-8035 CN 11-2852/P
    LIU Zhenlin,WANG Ying,KE Xiaobing,et al. 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,et al. 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

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

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    • Received Date: August 23, 2021
    • Revised Date: October 31, 2022
    • Accepted Date: December 06, 2021
    • Available Online: November 10, 2022
    • 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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