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冰川冻土 ›› 1981, Vol. 3 ›› Issue (4): 52-60.

• 研究论文 • 上一篇    下一篇

未扰动冻土声波速度的测定

宋琳1, 丁淑琴2, 王培明3   

  1. 1. 东北工学院;
    2. 北京煤炭研究院建井所;
    3. 淮南特殊凿井公司
  • 收稿日期:1980-06-10 出版日期:1982-11-25 发布日期:2012-04-26

SOUND VELOCITY MEASUREMENTS OF UNDISTURBED FROZEN SOILS

Song Lin1, Ding Shuqin2, Wang Peiming3   

  1. 1. Northeastern Institute of Technology;
    2. Beijing Research Institute of Mine Construction Central Coal Mining Research Institute;
    3. Special Shaft-Sinking Company, Huainan, Departmentof Coal Mining
  • Received:1980-06-10 Online:1982-11-25 Published:2012-04-26

摘要: 声波探测法已广泛应用于岩体力学研究和地质勘测等方面,它较其它物探方法具有简单、迅速、工作量小,经济等优点,其探测结果也是可靠的。国内外都开始采用声波法来检测冻土的性质、土壤的冻结速度、和冻土的厚度等。

Abstract: This paper summarizes the theory, technique and process of measuring the sound velocities of undisturbed frozen soils, and shows a mathematical analysis of the measured results. The correlation between longitudinal wave velocity and temperature is obtained under free condition.The longitudinal wave velocities of two kinds of soil, i. e. middle- sand and, gravel-sand, are measured in both decreasing and increasing temperature. They increase with temperature decrease, and generally, increase evidently within the temperature rang from 0 to -10℃, and increase slowly as the temperature being lowered under -10℃. The sound velocity in gravel-sand is larger than that in middle-sand, the longitudinal wave velocity in the process of temperature decrease is larger than that in temperature increase when temperature is same, and that under loaded condition is larger than that under free conditron.