| Autor: |
Haifeng Zhou, Hui Gao, Chun Feng, Zizheng Sun |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Journal of Applied and Computational Mechanics, Vol 7, Iss 4, Pp 2185-2195 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2383-4536 |
| DOI: |
10.22055/jacm.2021.37475.3022 |
| Popis: |
Creating new fracture networks in coal seams with natural fractures through hydraulic fracturing techniques is an effective method for exploiting coal-bed methane. In this paper, a continuum-discontinuum element method (CDEM) is developed for simulating and assessing hydraulic fracture propagation in coal seams. An elastic-damage-fracture model is proposed for capturing the deformation and cracking processes of fractured coal. A stress-fracture percolation relation is implemented to simulate the hydro-mechanical coupling processes. The influence of X-direction angles, mechanical strengths, distances and lengths of natural fractures are analyzed in detail. The results are potentially useful to optimize the fracturing design. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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