中国海洋大学学报（自然科学版）2017，Vol.47Issue(10)：1-8,8.DOI:10.16441/j.cnki.hdxb.20160483
钙质岛礁沉降变形过程分析
Settlement and Deformation Characteristics of Calcareous Island-reef
摘要
Abstract
A large number of constructions have been carried out on calcareous islands and reefs in China with the advancing of national policy of Maritime Silk Road.Due to the special engineering properties of calcareous sands,the calcareous islands and reefs exhibit distinct characteristics of subsidence and deformation processes compared with other regions with different materials.Traditional techniques are difficult employed in the remote maritime islands and reefs.A remote sensing approach,Permanent Scatter Interferometry (PSI),is used to measure the subsidence processes of typical calcareous island-reefs.Further numerical analysis is carried out to analyze the characteristics of their settlement and deformation.Spatiotemporal variation of subsidence has been observed.In general,the subsidence rate along the boundary of island-reef is larger than that in the center.The disturbance of engineering construction plays an important role on the accelerating the ground deformation of island-reef.The coral calcareous island within the monitoring period is stable as shown from the smaller subsidence rate compared with other regions with different materials.The non-linear fluctuated subsidence processes are observed showing the close effects of engineering construction and marine hydrodynamics.The large of uncertainty of calcareous island deformation process is still a concern due to the special engineering properties of calcareous sands,such as the skeleton grain breakage behavior.Further monitoring and analyzing are necessary to facilitate the safety of engineering construction on the coral calcareous islands and reefs.关键词
钙质岛礁/沉降变形/过程与机理/永久散射体干涉测量技术Key words
calcareous island-reef/settlement and deformation/process and mechanism/Permanent Scatterer Interferometry (PSI)分类
建筑与水利引用本文复制引用
兰恒星,赵晓霞,伍宇明,李郎平,苏奋振..钙质岛礁沉降变形过程分析[J].中国海洋大学学报（自然科学版）,2017,47(10):1-8,8.基金项目
国家自然科学基金国家杰出青年基金项目(41525010) （41525010）
中国科学院前沿科学重点研究项目(QYZDY-SSW-DQC019)资助 Supported by the National Science Fund for Distinguished Young Scholars of China (41525010) （QYZDY-SSW-DQC019）
Key Pioneering Project of Chinese Academy of Sciences(QYZDY-SSW-DQC019) （QYZDY-SSW-DQC019）
