• 责任者：Zhu Bojing (Key Laboratory of Computational Geodynamics ; CAS ; Beijing 100049 ; China) ; Liu Xuyao
• 刊名：Earthquake
• 出版年：2013
• 卷期：33(4)
• 关键词：弹性波 ; elastic waves ; 致密砂层 ; tight sands ; 液化 ; liquefaction
• 页码：p.71-83
• 图表：9 illus., 1 table, 15 refs.
• 分类号：1600
• issnNo：ISSN1000-3274
• isbnNo：CN11-1893/P

     Hydrofracturing-liquefaction mechanism is the basic theory for understanding the in-situ stress measurement,the petroleum-gas （nature gas and shale gas）-geothermic development,and earthquake damage evaluation and mechanism study.Due to the complexity and challenge of this issue,mechanism of dynamic hydrofracturing-liquefaction is still not clear,even if a lot of fundamental and landmark achievements had been obtained in this field since the 1960＇s.In this work,transient hydrofracturing-liquefaction of tight sandstone under earthquake wave was studied by using hybrid lattice Boltzmann and finite element fluid-solid coupled modeling on parallel GPU-CPU environment.First,the tight sandstone sample from the Ordos Basin Triassic formation was selected and different tomography resolution data was obtained by X-ray CT digital technology.Then,based on the D3Q27 lattice Boltzmann and finite element method,the fluid-solid coupled porous medium physical modeling was established,and the relatively hydrofracturing-liquefaction of tight sandstone was obtained for the first time.Last,the hydrofracturing-liquefaction process was simulated,and the relationship between the amplitude,frequency and time of the earthquake wave and the tight sandstone pore-network evolution,maximum tight sandstone fracturing-liquefaction stress criteria was explored.