摘要
基于岩石的滞弹性性质导致地震波的衰减 ,而采用正弦波对大理岩、砂岩施加单轴压缩应力 ,求取应力与应变的相位差 ,表明饱油岩石的衰减大于饱水岩石的衰减 ,干燥岩石的衰减很小 ,频率对衰减的影响很大 ,砂岩具有明显的各向异性 ,衰减、模量、泊松比随正弦波应力振幅的增加 。
After the phase difference between stress and strain was obtained, it is observed that oil-saturated rock has more attenuation than water-saturated one, while the attenuation of dry rock is very small. The dependence of attenuation on frequency is very strong, and sandstone is of obvious anisotropy. The variation trend of attenuation, modulus and Poisson ratio with increasing amplitude of sinusoidal stress is also of obvious anisotropy.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2001年第2期216-219,共4页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金! (497742 50 )资助项目
关键词
大理岩
砂岩
动态响应
循环应力
周期载荷
Anisotropy
Marble
Poisson ratio
Sandstone
Strain
Stress analysis
