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Sciences in Cold and Arid Regions ›› 2015, Vol. 7 ›› Issue (4): 323–328.doi: 10.3724/SP.J.1226.2015.00323

• ARTICLES • 上一篇    

Experimental research on acoustic wave velocity of frozen soils during the uniaxial loading process

DongQing Li1, Xing Huang1,2,3, Feng Ming1, Yu Zhang1,2, Hui Bing1   

  1. 1. State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. College of Architecture and Urban-Rural Planning, Sichuan Agricultural University, Du Jiangyan, Sichuan 611830, China
  • 收稿日期:2015-02-26 修回日期:2015-05-16 发布日期:2018-11-23
  • 通讯作者: Ph.D., DongQing Li, Professor of Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences. No. 320, West Donggang Road, Lanzhou, Gansu 730000, China. Tel: +86-931-4967278; E-mail: dqli@lzb.ac.cn E-mail:dqli@lzb.ac.cn
  • 基金资助:
    This work is supported by the National Natural Science Foundation of China (No. 41271080), the National Basic Research Program ("973") of China (No. 2012CB026102), and the Western Project Program of the Chinese Academy of Sciences (No. KZCX2-XB3-19).

Experimental research on acoustic wave velocity of frozen soils during the uniaxial loading process

DongQing Li1, Xing Huang1,2,3, Feng Ming1, Yu Zhang1,2, Hui Bing1   

  1. 1. State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. College of Architecture and Urban-Rural Planning, Sichuan Agricultural University, Du Jiangyan, Sichuan 611830, China
  • Received:2015-02-26 Revised:2015-05-16 Published:2018-11-23
  • Contact: Ph.D., DongQing Li, Professor of Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences. No. 320, West Donggang Road, Lanzhou, Gansu 730000, China. Tel: +86-931-4967278; E-mail: dqli@lzb.ac.cn E-mail:dqli@lzb.ac.cn
  • Supported by:
    This work is supported by the National Natural Science Foundation of China (No. 41271080), the National Basic Research Program ("973") of China (No. 2012CB026102), and the Western Project Program of the Chinese Academy of Sciences (No. KZCX2-XB3-19).

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摘要： Ultrasonic P-wave tests of frozen silt and frozen sand were conducted during uniaxial loading by using an RSM®-SY5(T) nonmetal ultrasonic test meter to study the velocity characteristics of P-waves. The experimental results indicate that the P-wave velocity is affected by soil materials, temperature, and external loads, so the P-wave velocity is different in frozen silt and frozen sand, but all decrease with an increase of temperature and increase at first and then decrease with strain during the loading process. There is an exponential relationship between uniaxial compressive strength and P-wave velocity, and the correlation between them is very good. The characteristic parameters of acoustic waves can, to some extent, reflect the development of internal cracks in frozen soils during loading.

关键词: frozen silt, frozen sand, temperature, uniaxial loading, P-wave velocity

Abstract: Ultrasonic P-wave tests of frozen silt and frozen sand were conducted during uniaxial loading by using an RSM®-SY5(T) nonmetal ultrasonic test meter to study the velocity characteristics of P-waves. The experimental results indicate that the P-wave velocity is affected by soil materials, temperature, and external loads, so the P-wave velocity is different in frozen silt and frozen sand, but all decrease with an increase of temperature and increase at first and then decrease with strain during the loading process. There is an exponential relationship between uniaxial compressive strength and P-wave velocity, and the correlation between them is very good. The characteristic parameters of acoustic waves can, to some extent, reflect the development of internal cracks in frozen soils during loading.

Key words: frozen silt, frozen sand, temperature, uniaxial loading, P-wave velocity

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