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Research on Subsidence of LNG Storage Tank by Integrating InSAR and Airborne Point Cloud
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Bo SUN1, Te LU2, Miaomiao HAN2, Zhen LI2, Xiuquan WANG2, Feng’an WU3
Science Technology and Industry | 2025, 25(14) : 32 - 39
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Science Technology and Industry | 2025, 25(14): 32-39
Technology Innovation
Research on Subsidence of LNG Storage Tank by Integrating InSAR and Airborne Point Cloud
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Bo SUN1, Te LU2, Miaomiao HAN2, Zhen LI2, Xiuquan WANG2, Feng’an WU3
Affiliations
  • 1 National Petroleum and Gas Pipeline Network Group Co, Ltd, Beijing 100013, China
  • 2 National Pipe Network Group Beihai Liquefied Natural Gas Company Limited, Beihai 536000, Guangxi, China
  • 3 China Academy of Building Research, Beijing 100013, China
Published: 2025-07-25
Outline
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According to the challenge of monitoring the structural integrity of LNG storage tanks, persistent scatterer interferometric synthetic aperture radar (PS-InSAR) and small baseline subset InSAR (SBAS-InSAR) technologies were employed, sentinel-1A satellite imagery and digital elevation model (DEM) data were utilized to conduct deformation monitoring and stability assessment for an LNG terminal on an island in Guangxi, China. The results reveal three key findings. The maximum settlement occurrs in the LNG platform area in August, 2022, accompanied by slight uplift around the tanks. PS-InSAR detects annual deformation rates of -2.5 to 2 mm/year across 73% of the monitored area, while SBAS-InSAR indicats rates of -3.5 to 3 mm/year in 45% of the region, demonstrating overall deformation stability. Rainfall during the wet season shows a significant positive correlation with deformation magnitudes, where water infiltration increases soil pore pressure (reduced effective stress) and alters foundation bearing capacity, though no hazardous differential settlement is observed. The study demonstrates that radar interferometry enables millimeter-scale deformation monitoring across LNG storage facilities, providing critical technical support for operational safety in coastal areas with complex geological conditions.

lng tank  /  integrity monitoring  /  non-contact  /  PS-InSAR technology  /  SBAS-InSAR technology  /  ground deformation
Bo SUN, Te LU, Miaomiao HAN, Zhen LI, Xiuquan WANG, Feng’an WU. Research on Subsidence of LNG Storage Tank by Integrating InSAR and Airborne Point Cloud[J]. Science Technology and Industry, 2025 , 25 (14) : 32 -39 .
Year 2025 volume 25 Issue 14
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  • Receive Date:2025-03-03
  • Online Date:2025-09-15
  • Published:2025-07-25
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  • Received:2025-03-03
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Affiliations
    1 National Petroleum and Gas Pipeline Network Group Co, Ltd, Beijing 100013, China
    2 National Pipe Network Group Beihai Liquefied Natural Gas Company Limited, Beihai 536000, Guangxi, China
    3 China Academy of Building Research, Beijing 100013, China
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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