热门
Exploring the influence of rock inherent heterogeneity and grain size on hydraulic fracturing using discrete element modeling
文献类型：期刊论文
| 作者 | Huang, Liuke; Liu, Jianjun; Zhang, Fengshou; Dontsov, Egor; Damjanac, Branko |
| 刊名 | INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
 |
| 出版日期 | 2019 |
| 卷号 | 176页码:207-220 |
| 关键词 | Hydraulic fracture Discrete element modeling Inherent heterogeneity Grain size Propagation regimes |
| ISSN号 | 0020-7683 |
| DOI | 10.1016/j.ijsolstr.2019.06.018 |
| 英文摘要 | The effects of rock inherent heterogeneity and grain size on hydraulic fracture initiation and propagation for different propagation regimes are investigated through two dimensional discrete element modeling. Random particle assembly is used to mimic rock inherent heterogeneity in the numerical model while regular particle assembly is used as the reference. The rock inherent heterogeneity mainly affects the hydraulic fracture net pressure in the viscosity dominated regime and the effect is more profound in the toughness dominated regime. In the toughness dominated regime, in addition to the increase of net pressure relative to the regular particle sample, the hydraulic fracture profiles in the random particle sample also show larger tortuosity and asymmetry caused by the local heterogeneity, and the fracture growth of one of the wings can be temporarily arrested. Numerical simulations show that the effective toughness of the random particle sample is larger than that of the regular particle sample. This is caused by tortuosity, in which case the net pressure in the random particle sample is also affected by the local geometrical arrangements of the particles. Also, the apparent toughness is influenced by the magnitude of initial stress, which comes in addition to the tensile strength of the contact bond and the particle radius. The effect of stress anisotropy has limited effect on the hydraulic fracture propagation for both the viscosity and toughness dominated regimes. (C) 2019 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000482246300015 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/14818]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Southwest Petr Univ, Sch Geosci & Technol, Chengdu 610500, Sichuan, Peoples R China; 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China; 3.Tongji Univ, Minist Educ, Key Lab Geotech & Underground Engn, Shanghai 200092, Peoples R China; 4.Tongji Univ, Coll Civil Engn, Dept Geotech Engn, Shanghai 200092, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Liuke,Liu, Jianjun,Zhang, Fengshou,et al. Exploring the influence of rock inherent heterogeneity and grain size on hydraulic fracturing using discrete element modeling[J]. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,2019,176:207-220. |
| APA | Huang, Liuke,Liu, Jianjun,Zhang, Fengshou,Dontsov, Egor,&Damjanac, Branko.(2019).Exploring the influence of rock inherent heterogeneity and grain size on hydraulic fracturing using discrete element modeling.INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,176,207-220. |
| MLA | Huang, Liuke,et al."Exploring the influence of rock inherent heterogeneity and grain size on hydraulic fracturing using discrete element modeling".INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES 176(2019):207-220. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。