In site monitoring of wave-induced pore pressure of silt in Chengdao sea area of Yellow River Estuary

Du Xing; Sun Yongfu; Song Yupeng; Zhao Xiaolong; Zhou Qikun

doi:10.3969/j.issn.0253-4193.2019.07.010

Volume 41 Issue 7

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Du Xing，Sun Yongfu，Song Yupeng, et al. In site monitoring of wave-induced pore pressure of silt in Chengdao sea area of Yellow River Estuary[J]. Haiyang Xuebao，2019, 41(7)：116–122，doi:10.3969/j.issn.0253−4193.2019.07.010

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In site monitoring of wave-induced pore pressure of silt in Chengdao sea area of Yellow River Estuary

doi: 10.3969/j.issn.0253-4193.2019.07.010

Du Xing^{1, 2},
Sun Yongfu^{1, 2
,
,},
Song Yupeng^{1, 2},
Zhao Xiaolong^{1, 2},
Zhou Qikun^{1, 2}

1.
First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
2.
Laboratory for Marine Geology and Environment, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266235, China

Received Date: 2018-07-02
Rev Recd Date: 2018-08-31

Available Online: 2021-04-21

Publish Date: 2019-07-25

Abstract

Abstract

Variation of pore pressure between soil particles, which caused by the cyclic loading from waves to seabed, is the main reason for soil liquefaction. By using a self-designed pore pressure monitoring equipment, we monitored pore pressure with a long-period, high-precision way in the easy-liquefied zone in Chengdao sea area of Yellow River Estuary. The monitoring results show that the maximum wave-affected depth is between 0.5 m to 1.5 m and no obvious pore pressure response in the deeper sediment during this period. Pore pressure variation in soil is mainly determined by tide level and wave height. Tide level changes can result in smooth change in pore pressure but can not cause the emergence of excess pore pressure while wave height changes can result in severe oscillation in pore pressure and lead to the appearance of excess pore pressure.
- Chengdao sea area,
- wave-induced pore pressure,
- pore pressure monitoring,
- silt liquefaction

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References(22)

References

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