Experimental Study on Viscoelastic Behavior of Sedimentary Rock under Dynamic Loading

被引：61

作者：

Fan, L. F. ^{[2
]}

Ren, F. ^{[1
]}

Ma, G. W. ^{[1
]}

机构：

[1] Univ Western Australia, Sch Civil & Resource Engn, Crawley, WA 6009, Australia

[2] Nanyang Technol Univ, Sch Civil & Environm Engn, Singapore 639798, Singapore

来源：

ROCK MECHANICS AND ROCK ENGINEERING | 2012年 / 45卷 / 03期

关键词：

Sedimentary rock; Dynamic viscoelastic model; Experimental study; Pressure bar; Stress wave propagation; WAVE-PROPAGATION;

D O I：

10.1007/s00603-011-0197-7

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

An experimental study on viscoelastic behavior of sedimentary rock under dynamic loading was conducted. Discussions of the rock viscosity and its effect on stress wave propagations in the sedimentary rock were performed. The sedimentary rock bar was cored from an underground cavern construction site with a length of 129.80 cm, a diameter of 4.49 cm and a density of 2,681 kg/m 3. The attenuation coefficient and wave number versus the component wave frequency are found. The stress wave attenuation is found to be highly frequency dependent, while the phase velocity is insensitive to the component wave frequency. It is seen that the wave attenuation in the sedimentary rock not only relates to the wave propagation distance, but also highly depends on the input wave frequency. The stress wave with higher frequency attenuates faster than those with lower frequencies.

引用

页码：433 / 438

页数：6

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