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Rheological characteristics and its influencing factors of dense cohesive sediments in the Huanghe River subaqueous delta
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Xiaolei Liu1, 2, Anduo Chen1, Hong Zhang1, Yang Lu1, Lukuan Ma1, Yonggang Jia1, 2
Haiyang Xuebao | 2021, 43(5) : 127 - 134
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Haiyang Xuebao | 2021, 43(5): 127-134
• Article •
Rheological characteristics and its influencing factors of dense cohesive sediments in the Huanghe River subaqueous delta
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Xiaolei Liu1, 2, Anduo Chen1, Hong Zhang1, Yang Lu1, Lukuan Ma1, Yonggang Jia1, 2
Affiliations
  • 1Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Ocean University of China, Qingdao 266100, China
  • 2Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
Published: 2021-05-25 doi: 10.12284/hyxb2021083
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Cohesive sediments are widely distributed in the subaqueous delta of the Huanghe River and can easily cause problems such as sedimentation, erosion and sea-bed fluidization under the action of external load, which poses a great threat to the engineering facilities such as ports, waterways and submarine pipelines. Samples of cohesive sediment with different consolidation times and different water contents were prepared by using the undisturbed cohesive sediment taken from the fluid mud development area of the Huanghe River subaqueous delta. The rheological tests were carried out under the mode of full shear rate with R/S rheometer to analyze the rheological characteristics of cohesive sediment in the Huanghe River subaqueous delta and the effects of water content and consolidation time on the rheological characteristics. The results show that the cohesive sediment flows and becomes unstable under the shear load, and the phase changes. The yield stress increased by 35% after being consolidated for 120 min. The shear thickening behavior of the cohesive sediment with 50% water content at a high shear rate was more obvious with the increase of water content. Power model is applicable to the rheological behavior of the cohesive sediment with a water content greater than 50% at high shear rate. This study can provide a reference for the numerical simulation of subaqueous cohesive sediment and the prediction of subaqueous gravity flow.

Huanghe River subaqueous delta  /  dense cohesive sediments  /  rheological characteristics  /  influencing factors  /  rheological test
Xiaolei Liu, Anduo Chen, Hong Zhang, Yang Lu, Lukuan Ma, Yonggang Jia. Rheological characteristics and its influencing factors of dense cohesive sediments in the Huanghe River subaqueous delta[J]. Haiyang Xuebao, 2021 , 43 (5) : 127 -134 . DOI: 10.12284/hyxb2021083
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Article Info
doi: 10.12284/hyxb2021083
  • Receive Date：2020-04-08
  • Online Date：2026-02-26
  • Published：2021-05-25
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  • Received：2020-04-08
  • Revised：2020-06-02
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Affiliations
    1Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Ocean University of China, Qingdao 266100, China
    2Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
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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