Impact of injection pressure and polyaxial stress on hydraulic fracture propagation and permeability evolution in graywacke: Insights from discrete element models of a laboratory test
文献类型：期刊论文
| 作者 | Shen, Haimeng4,5; Yoon, Jeoung Seok3; Zang, Arno2; Hofmann, Hannes1,2; Li, Xiaying4,5; Li, Qi4,5
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| 刊名 | JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
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| 出版日期 | 2025-04-01 |
| 卷号 | 17期号:4页码:2344-2359 |
| 关键词 | Hydraulic fracture Discrete element model (DEM) Polyaxial stress Permeability evolution Crack front Fluid pressure front |
| ISSN号 | 1674-7755 |
| DOI | 10.1016/j.jrmge.2024.05.017 |
| 英文摘要 | Understanding the hydromechanical behavior and permeability stress sensitivity of hydraulic fractures is fundamental for geotechnical applications associated with fluid injection. This paper presents a threedimensional (3D) benchmark model of a laboratory experiment on graywacke to examine the dynamic hydraulic fracturing process under a polyaxial stress state. In the numerical model, injection pressures after breakdown (postbreakdown) are varied to study the impact on fracture growth. The fluid pressure front and crack front are identified in the numerical model to analyze the dynamic relationship between fluid diffusion and fracture propagation. Following the hydraulic fracturing test, the polyaxial stresses are rotated to investigate the influence of the stress field rotation on the fracture slip behavior and permeability. The results show that fracture propagation guides fluid diffusion under a high post-breakdown injection pressure. The crack front runs ahead of the fluid pressure front. Under a low postbreakdown injection pressure, the fluid pressure front gradually reaches the crack front, and fluid diffusion is the main driving factor of fracture propagation. Under polyaxial stress conditions, fluid injection not only opens tensile fractures but also induces hydroshearing. When the polyaxial stress is rotated, the fracture slip direction of a fully extended fracture is consistent with the shear stress direction. The fracture slip direction of a partly extended fracture is influenced by the increase in shear stress. Normal stress affects the permeability evolution by changing the average mechanical aperture. Shear stress can induce shearing and sliding on the fracture plane, thereby increasing permeability. (c) 2025 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/ 4.0/). |
| 资助项目 | Knowledge Innovation Program of Wuhan-Basic Research[2022010801010159] ; Helmholtz Association's Initiative and Networking Fund for the Helmholtz Young Investigator Group ARES[VH-NG-1516] ; Swedish Radiation Safety Authority[SSM2020-2758] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001471949900001 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35716]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Li, Qi |
| 作者单位 | 1.Tech Univ Berlin, Str 17 Juni 135, D-10623 Berlin, Germany 2.GFZ German Res Ctr Geosci, Helmholtz Ctr Potsdam, D-14473 Potsdam, Germany 3.DynaFrax UG LLC Co, D-14467 Potsdam, Germany 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shen, Haimeng,Yoon, Jeoung Seok,Zang, Arno,et al. Impact of injection pressure and polyaxial stress on hydraulic fracture propagation and permeability evolution in graywacke: Insights from discrete element models of a laboratory test[J]. JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,2025,17(4):2344-2359. |
| APA | Shen, Haimeng,Yoon, Jeoung Seok,Zang, Arno,Hofmann, Hannes,Li, Xiaying,&Li, Qi.(2025).Impact of injection pressure and polyaxial stress on hydraulic fracture propagation and permeability evolution in graywacke: Insights from discrete element models of a laboratory test.JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,17(4),2344-2359. |
| MLA | Shen, Haimeng,et al."Impact of injection pressure and polyaxial stress on hydraulic fracture propagation and permeability evolution in graywacke: Insights from discrete element models of a laboratory test".JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING 17.4(2025):2344-2359. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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