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现代黄河水下三角洲北部土体固结沉降特征及其对地形变化的贡献研究
引用本文:刘杰,李萍,刘潇,徐元芹,高伟.现代黄河水下三角洲北部土体固结沉降特征及其对地形变化的贡献研究[J].海洋学报(英文版),2015,34(9):136-142.
作者姓名:刘杰  李萍  刘潇  徐元芹  高伟
作者单位:国家海洋局第一海洋研究所, 山东 青岛 266061,国家海洋局第一海洋研究所, 山东 青岛 266061,中国海洋大学环境科学与工程学院, 山东 青岛 266100,国家海洋局第一海洋研究所, 山东 青岛 266061,国家海洋局第一海洋研究所, 山东 青岛 266061
摘    要:The sediments of the modern Huanghe River subaqueous delta are easily to generate settlement and lead to topography change which is due to fast deposition rate, high void ratio, moisture content and compressibility. The sediment consolidation settlements and its contribution to the topography change in the northern modern Huanghe River subaqueous delta are studied based on drilling data, laboratory experiment results, and water depth measurements of different time. The results show that the final consolidation settlement of drill holes in the study area is between 1.17 and 3.21 m, and mean settlement of unit depth is between 2.30 and 5.30 cm/m based on the one-dimensional consolidation theory and Plaxis numerical model. The final consolidation settlement obtained by Plaxis numerical model is smaller than that obtained by the one-dimensional consolidation theory,and the difference is 3.4%–39.9% between the methods. The contribution of the consolidation settlement to the topographical change is at 20.2%–86.6%, and the study area can be divided into five different regions based on different contribution rates. In the erosion area, the actual erosion depth caused by hydrodynamics is lower than the changes of measured water depth, however, the actual deposition amount caused by hydrodynamics is much larger than the changes of water depth obtained by measured data in the equilibrium and deposition areas.

关 键 词:固结沉降  水深变化  地形影响  钻孔分析  现代黄河水下三角洲北部
收稿时间:2014/10/29 0:00:00
修稿时间:2015/1/22 0:00:00

The characteristics of consolidation settlement and its contribution to the topographical change in the northern modern Huanghe River subaqueous delta in China
LIU Jie,LI Ping,LIU Xiao,XU Yuanqin and GAO Wei.The characteristics of consolidation settlement and its contribution to the topographical change in the northern modern Huanghe River subaqueous delta in China[J].Acta Oceanologica Sinica,2015,34(9):136-142.
Authors:LIU Jie  LI Ping  LIU Xiao  XU Yuanqin and GAO Wei
Affiliation:1.First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China2.College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
Abstract:The sediments of the modern Huanghe River subaqueous delta are easily to generate settlement and lead to topography change which is due to fast deposition rate, high void ratio, moisture content and compressibility. The sediment consolidation settlements and its contribution to the topography change in the northern modern Huanghe River subaqueous delta are studied based on drilling data, laboratory experiment results, and water depth measurements of different time. The results show that the final consolidation settlement of drill holes in the study area is between 1.17 and 3.21 m, and mean settlement of unit depth is between 2.30 and 5.30 cm/m based on the one-dimensional consolidation theory and Plaxis numerical model. The final consolidation settlement obtained by Plaxis numerical model is smaller than that obtained by the one-dimensional consolidation theory, and the difference is 3.4%-39.9% between the methods. The contribution of the consolidation settlement to the topographical change is at 20.2%-86.6%, and the study area can be divided into five different regions based on different contribution rates. In the erosion area, the actual erosion depth caused by hydrodynamics is lower than the changes of measured water depth, however, the actual deposition amount caused by hydrodynamics is much larger than the changes of water depth obtained by measured data in the equilibrium and deposition areas.
Keywords:sediment consolidation  water depth variation  morphological effect  core analysis  northern Huanghe River subaqueous delta
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