| 人工冻土声波参数试验研究 |
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| 引用本文： | 杨平,李强.人工冻土声波参数试验研究[J].冰川冻土,1997,19(2):149-153. |
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| 作者姓名： | 杨平 李强 |
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| 作者单位： | 安徽淮南矿业学院 |
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| 摘 要： | 用ＳＹＣ－２型声波探测仪，对取自淮南矿区井下冻粘土，冻砂土进行了测定。其声波纵横波速振幅衰减系数及动弹模与冻土温度、含水量、容重的关系均用于幂指数形式较好地描述。其中容波速，动弹模及振衰减的影响最大；其次为温度、含水量；冻土振幅度衰减系数对其物理参数变化的敏感性大于波速。另外还研究了冻粘土与冻砂土怕波特性差异、截载大小及加载时间对冻土怕特性影响。
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| 关 键 词： | 冻土 声波波速 振幅衰减系数 动弹模 人工冻土 |
A Experimental Study on the Acoustic Wave Parameters of Artifical Frozen Soil |
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| Yang Ping,Li Qiang and Yu Chuhou.A Experimental Study on the Acoustic Wave Parameters of Artifical Frozen Soil[J].Journal of Glaciology and Geocryology,1997,19(2):149-153. |
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| Authors: | Yang Ping Li Qiang and Yu Chuhou |
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| Abstract: | In this article, the relation among longitudinal wave velocity, transversal one,cofficient of amplitude decay, the dynamic elestic modulus and temperature, the water content, the unit weight of frozen sand and clay are presented, according to a determination using SYC-2 rock acoustic detection device. The relations can be well described as exponent sign formulas, among them, the effects of unit weight on velocity, amplitude decay and dynamic elestic modulus are greatest. Then, it is temperature and water content by turns. The attenuation coeffisent of amplitude is more sensitive than longitudinal wave velocity to variation of physical properties of frozen soil. The difference between forzen sand and caly, and the acoustic wave properties of frozen soil varying with load and loading duration is studied, too. |
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| Keywords: | frozen soil acoustic wave velocity attenuation coefficent of amplitude dynamic elestic modulus |
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