The influence of microstructure changing of seafloor sediments on its sound velocity in the stress-strain course

LI Gan-xian; LU Bo; HUANG Shao-jian; LIU Shu-zhuo

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LI Gan-xian, LU Bo, HUANG Shao-jian, LIU Shu-zhuo. The influence of microstructure changing of seafloor sediments on its sound velocity in the stress-strain course[J]. Haiyang Xuebao, 2002, 24(3): 75-80.

Citation:

LI Gan-xian, LU Bo, HUANG Shao-jian, LIU Shu-zhuo. The influence of microstructure changing of seafloor sediments on its sound velocity in the stress-strain course[J]. Haiyang Xuebao, 2002, 24(3): 75-80.

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The influence of microstructure changing of seafloor sediments on its sound velocity in the stress-strain course

1.
Open Laboratory of Marginal Sea Geology and Paleoenvironment, South China Sea Institute of Oceanolgy, Chinese Academy of Sciences, Guangzhou 510301, China
2.
Department of Civil Engineering, South China University of Technology, Guangzhou 510641, China

Received Date: 2000-09-28
Rev Recd Date: 2001-06-15

Abstract

Abstract

Test tools and method of synchronizing acoustic measure at the stress-strain course for sea floor sediments are expatiated on,and the test data of 45 sediment samples which sampled from sea floor in South China Sea are analysed.The result shows that the more sediment grain course,the more porosity small,and the bigger unconfined compression strength,the more sound velocity high.In the stress-strain course,the sediment sound velocity has obvious variance as the stress changes.Acoustic characteristics of sediments in strain phases and the course of influence of sediment microstructure variance on its sound velocity are discussed.This study will have important significance for surveying well of petroleum geology and evaluating base stabilization of sea floor engineering.
- sea floor sediments,
- stress-strain,
- microstructure feature,
- sound velocity,
- compression strength

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References(8)

References

BIOT M A.Theory of propagation of elastic waves in a fluid-saturated porous solid[J].J Acoust Soc Am,1956,(28):179-191.

WYLLIE M R J,et al.Elastic wave velocities in heterogeneous and porous media[J].Geophysics,1956,21(1-4) 41-70.

ZHOU Zhi-yu,MENG In-sheng.Acoustic estimations of porosity and thickness for thin soft surface layer of sea floor[J].Marine Geology,1988,(7):211-219.

ANDERSON R S.Statistical correlation of physical properties and sound velocity in sediments[A].Hampton L,ed.Physics of Sound in Marine Sediments[M].New York:Plenum Press,1974.481-518.

HAMILTON E L,BUCHMAN R T.Sound velocity and related properties of marine sediments[J].J Acoust Soc Am,1982,(72):1 891-1 904.

LIANG Yuan-bo,LU Bo.On the effect of physico-geotechnical characteristics upon sound velocities of sea floor sediments[J].Acta Oceanologica Sinica,1984,9(3):313-320.

梁元博,卢博.海底沉积物力学性质影响声速的物理机制[J].海洋学报,1985,7(1):111-117.

卢博,李赶先,黄韶健.南海海底钙质土声学物理性质及其工程地质意义[J].中国科学(D辑),1998,28(6):518-522.

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