首页|Microstructure Features and the Macroscopic Acoustic Behavior of Gassy Silt in the Yellow River Delta

Microstructure Features and the Macroscopic Acoustic Behavior of Gassy Silt in the Yellow River Delta

扫码查看
原文链接
  • 万方数据
  • 维普
The morphological changes in isolated bubbles in gassy silt play a critical role in the microscopic structures between soil particles and bubbles and macroscopic physical properties.Based on X-ray CT scanning experiments under various vertical loads(four levels),self-designed acoustic macro experiments,and a series of formula revisions to the macro-air-bearing silt sound-velocity pre-diction model,this paper discusses the macro-and micro-scale features of gassy silts from the Yellow River Delta.The samples consisted of different proportions of silt from the Yellow River Delta and porous media,and they were used to form two types of aerosol silts with initial gas contents of 4.23％and 7.67％.The results show that the air bubble content and external load considerably affect the microstructural parameters and acoustic behavior of gassy silt in the Yellow River Delta.The macroscopic sound velocity showed a linear positive correlation with vertical load and relation to microstructural parameters in varying manners and degrees.Based on the traditional Biot-Stoll acoustic model,the gas-phase medium coefficient was introduced for the proper calculation and prediction of the sound velocity of air-bearing silt.The errors of the overall prediction varied between 5.6％and 9.6％.

gassy siltvertical loadmicrostructure parametersbubble vibrationBiot-Stoll acoustic model

LIU Tao、GUO Zhenqi、ZHANG Yan、WU Chen、LIU Lele、DENG Shenggui

展开 >

Laboratory for Marine Geology,Pilot National Laboratory for Marine Science and Technology,Qingdao 266061,China

Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering,Ocean University of China,Qingdao 266100,China

College of Civil Engineering,Anhui Jianzhu University,Hefei 230601,China

The Key Laboratory of Gas Hydrate,Ministry of Natural Resources,Qingdao Institute of Marine Geology,Qingdao 266071,China

College of Marine Geosciences,Key Laboratory of Submarine Geosciences and Prospecting,Ocean University of China,Qingdao 266100,China

展开 >

National Natural Science Foundation of ChinaChina Postdoctoral Science Foundation

U20062132022M712989

2024

10.1007/s11802-024-5461-z

中国海洋大学学报(自然科学英文版)
中国海洋大学

中国海洋大学学报(自然科学英文版)

CSTPCD
影响因子：0.268
ISSN：1672-5182
年,卷(期)：2024.23(2)
  • 27