摘要
弹性波在非饱和孔隙介质中传播时,孔隙流体会发生宏观Biot流、微观喷射流以及由于孔隙流体不同(气、液双相)导致的介(中)观流.将非饱和孔隙介质等效为含液相孔隙流体的背景介质中嵌入含气相孔隙流体的包裹体,在非饱和双重孔隙介质模型基础上,引入微观喷射流,建立了包含宏观、微观和介观三种尺度波至流的非饱和孔隙介质波传播方程.数值分析表明该模型可以更好地预测更宽频带内的波速频散和衰减.
When elastic waves propagate in an unsaturated porous medium, the macro Biot flow, micro squirt flow,and meso flow will occur. The unsaturated porous medium is equivalent to the inclusion of gas phase porous fluid embedded in the background medium containing liquid phase porous fluid. Based on the unsaturated dual porous medium model, the micro squirt flow is introduced, and the wave propagation equation of unsaturated porous medium including macro, micro and mesoscopic scale wave introduced flow is established. The numerical analysis indicates that the model in this paper can better predict the wave velocity dispersion and attenuation in a wider frequency band.
作者
李红星
张嘉辉
樊嘉伟
陶春辉
肖昆
黄光南
盛书中
宫猛
Li Hong-Xing;Zhang Jia-Hui;Fan Jia-Wei;Tao Chun-Hui;Xiao Kun;Huang Guang-Nan;Sheng Shu-Zhong;Gong Meng(State Key Laboratory of Nuclear Resources and Environment,East China University of Technology,Nanchang 330013,China;Second Institute of Oceanography,Ministry of Natural Resources,Hangzhou 310012,China)
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2022年第8期334-340,共7页
Acta Physica Sinica
基金
国家自然科学基金(批准号:41764006)
江西省自然科学基金(批准号:20202BABL201027)
江西省重点研发计划(批准号:20212BBG73011)
东华理工大学核资源与环境国家重点实验室开放基金(批准号:Z1903)资助的课题~~。
关键词
非饱和孔隙介质
多尺度波至流
波传播理论
unsaturated porous media
multi-scale wave introduced flow
wave propagation theory
