Seismic velocity and shear-wave splitting under cyclic loading

被引：0

作者：

Li, Awei ^{[1
]}

Sun, Dongsheng ^{[1
]}

Wang, Hongcai ^{[1
]}

Qiao, Erwei ^{[1
]}

机构：

[1] Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China

来源：

2011 INTERNATIONAL CONFERENCE ON ELECTRONICS, COMMUNICATIONS AND CONTROL (ICECC) | 2011年

关键词：

cyclic loading; seismic velocity; shear-wave splitting; quartz sandstone; SHALES;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

To study the change law of seismic velocity and shear-wave splitting with cyclic loading, used Autolab2000 petrophysical testing system which was introduced from USA, experiment measured seismic velocity of quartz sandstone sample from Yangzhuang, Jixian, under the confining pressure (5-150MPa) of different cycles. Got the change law of compressional wave velocity and shear wave velocity with the changing confining pressure, and then analyzed the shear-wave splitting. Preliminary results showed that seismic velocity of unload is higher than the seismic velocity of load. P wave velocity of the second cycle is lower than the corresponding P wave velocity of the first cycle when the confining pressure is lower than 50MPa and S wave velocity of the second cycle is higher than the corresponding S wave velocity of the first cycle. When the confining pressure is under 60MPa, shear-wave splitting of unload is lower than the corresponding shear-wave splitting of load and shear-wave splitting of the second cycle is lower than the corresponding value of the first cycle.

引用

页码：4506 / 4508

页数：3

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