| A numerical method for analyzing fault slip tendency under fluid injection with XFEM | |
| Liu DQ(刘大庆)1,2 | |
| Corresponding Author | Liu, Daqing([email protected]) |
| Source Publication | ACTA GEOTECHNICA
 |
| 2020-02-01 | |
| Volume | 15Issue:2Pages:325-345 |
| ISSN | 1861-1125 |
| Abstract | We propose a numerical method for analyzing fault slip tendency under fluid injection using the extended finite element method (XFEM) both for fluid flow and poroelasticity. The fault is modeled as a zero-thickness interface, and we use a reduced model for the fluid flow in the fault to account for its hydraulic behavior. We use the rate- and state-dependent friction model as the fault friction model, and Biot's theory of poroelasticity to study the coupling between fluid flow and mechanical deformation in the surrounding porous media. Since a fully coupled method between fluid flow and poromechanics is computationally expensive, we have investigated the use of the so-called fixed-stress split in this context. In such a scheme, the fluid flow problem is solved firstly by freezing the total means stress field, and then the results are used to solve the mechanical problem. The fixed-stress split is unconditionally stable, consistent and more accurate for a given number of iterations compared with other type of splitting strategies. In order to verify our method, some test cases are presented. For the coupling between fluid flow and poromechanics, we consider the Terzaghi Problem and the Mandel Problem, comparing our results with those of previously published works. While, for the mechanic problem, we compare the results with those obtained using the software Pylith. |
| Keyword | Coupling Fault slip tendency Fluid injection Fluid flow Fixed-stress split Geomechanics XFEM |
| DOI | 10.1007/s11440-019-00814-w |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000512117200003 |
| WOS Keyword | FINITE-ELEMENT-METHOD ; CRACK-GROWTH ; MODELING FRACTURES ; DYNAMIC CRACK ; FLOW ; FRICTION ; PROPAGATION ; APPROXIMATION ; STABILIZATION ; GEOMECHANICS |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Geological |
| Funding Project | China Scholarship Council (CSC) |
| Funding Organization | China Scholarship Council (CSC) |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Contributor | Liu, Daqing |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/81533 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, Beijing, Peoples R China; 2.Politecn Milan, Dept Math, Modelling & Sci Comp Lab MOX, Milan, Italy |
| Recommended Citation GB/T 7714 | Liu DQ. A numerical method for analyzing fault slip tendency under fluid injection with XFEM[J]. ACTA GEOTECHNICA,2020,15,2,:325-345.Rp_Au:Liu, Daqing |
| APA | 刘大庆.(2020).A numerical method for analyzing fault slip tendency under fluid injection with XFEM.ACTA GEOTECHNICA,15(2),325-345. |
| MLA | 刘大庆."A numerical method for analyzing fault slip tendency under fluid injection with XFEM".ACTA GEOTECHNICA 15.2(2020):325-345. |
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| Jp2020038.pdf（1888KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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