Difference of rock elastic parameters under static and dynamic loading

被引：0
|
作者：
Ge, HK [1 ]
Lin, YS [1 ]
Ma, SZ [1 ]
Song, LL [1 ]
机构：
[1] Univ Petr, Shandong 257061, Peoples R China
来源：
FRONTIERS OF ROCK MECHANICS AND SUSTAINABLE DEVELOPMENT IN THE 21ST CENTURY | 2001年
关键词：
D O I：
暂无
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
Rock ultrasonic wave velocity and static deformation were measured simultaneously under triaxial loading to investigate the difference and correlation of rock static/dynamic elastic parameters. The results show that rock dynamic Young's modulus is higher than the static one. The correlation of static/dynamic Young's moduli is good. The ratio of static/dynamic Young's modulus is about 0.6. The static and dynamic Poisson's ratios show some extent of positive dependence but the correlation is more discrete. There is also a difference of static/dynamic Biot's coefficients. The static one is higher than the dynamic one. They are all decrease with confining pressure. The inherent cause of static/dynamic difference is the crack-like pores and the pore fluid in rocks. The external cause is the strain amplitude and its frequency difference under static. And dynamic loading.
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页码：69 / 71
页数：3
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