The Role of Heterogeneity on Deformation and Flow in Fractured Coal Slopes
The fractures in brown coal influence fluid flow and deformation in these materials. These fractures display highly heterogeneous characteristics in the distributions of their apertures, separations and orientations. While discrete fracture models have previously been used to analyse the effects of...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-10-01
|
| Series: | Minerals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-163X/12/10/1297 |
| _version_ | 1797470992525688832 |
|---|---|
| author | Roger Hu Stuart D. C. Walsh |
| author_facet | Roger Hu Stuart D. C. Walsh |
| author_sort | Roger Hu |
| collection | DOAJ |
| description | The fractures in brown coal influence fluid flow and deformation in these materials. These fractures display highly heterogeneous characteristics in the distributions of their apertures, separations and orientations. While discrete fracture models have previously been used to analyse the effects of fractures, such models are not feasible for the scales encountered in many brown-coal mines. Instead, here a continuum permeability model is used to capture the effects of the fracture heterogeneity on fractured coal. This paper presents an analysis of the fracture heterogeneity of brown coal at the AGL Loy Yang coal mine in Latrobe Valley and its influence on the fluid flow, dispersion and rock stability. A stress dependent fracture permeability is considered and captures the effects of heterogeneity in the fracture aperture and orientation. Numerical simulations conducted with multiple plasticity models present different flow paths and potential failure modes depending on the the implemented boundary conditions. |
| first_indexed | 2024-03-09T19:43:14Z |
| format | Article |
| id | doaj.art-442179c769794746adccabf770bd688a |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-09T19:43:14Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-442179c769794746adccabf770bd688a2023-11-24T01:30:10ZengMDPI AGMinerals2075-163X2022-10-011210129710.3390/min12101297The Role of Heterogeneity on Deformation and Flow in Fractured Coal SlopesRoger Hu0Stuart D. C. Walsh1Civil Engineering, Monash University, Clayton, VIC 3800, AustraliaCivil Engineering, Monash University, Clayton, VIC 3800, AustraliaThe fractures in brown coal influence fluid flow and deformation in these materials. These fractures display highly heterogeneous characteristics in the distributions of their apertures, separations and orientations. While discrete fracture models have previously been used to analyse the effects of fractures, such models are not feasible for the scales encountered in many brown-coal mines. Instead, here a continuum permeability model is used to capture the effects of the fracture heterogeneity on fractured coal. This paper presents an analysis of the fracture heterogeneity of brown coal at the AGL Loy Yang coal mine in Latrobe Valley and its influence on the fluid flow, dispersion and rock stability. A stress dependent fracture permeability is considered and captures the effects of heterogeneity in the fracture aperture and orientation. Numerical simulations conducted with multiple plasticity models present different flow paths and potential failure modes depending on the the implemented boundary conditions.https://www.mdpi.com/2075-163X/12/10/1297fractureshydraulic propertiesnumerical modellingfracture strength |
| spellingShingle | Roger Hu Stuart D. C. Walsh The Role of Heterogeneity on Deformation and Flow in Fractured Coal Slopes Minerals fractures hydraulic properties numerical modelling fracture strength |
| title | The Role of Heterogeneity on Deformation and Flow in Fractured Coal Slopes |
| title_full | The Role of Heterogeneity on Deformation and Flow in Fractured Coal Slopes |
| title_fullStr | The Role of Heterogeneity on Deformation and Flow in Fractured Coal Slopes |
| title_full_unstemmed | The Role of Heterogeneity on Deformation and Flow in Fractured Coal Slopes |
| title_short | The Role of Heterogeneity on Deformation and Flow in Fractured Coal Slopes |
| title_sort | role of heterogeneity on deformation and flow in fractured coal slopes |
| topic | fractures hydraulic properties numerical modelling fracture strength |
| url | https://www.mdpi.com/2075-163X/12/10/1297 |
| work_keys_str_mv | AT rogerhu theroleofheterogeneityondeformationandflowinfracturedcoalslopes AT stuartdcwalsh theroleofheterogeneityondeformationandflowinfracturedcoalslopes AT rogerhu roleofheterogeneityondeformationandflowinfracturedcoalslopes AT stuartdcwalsh roleofheterogeneityondeformationandflowinfracturedcoalslopes |