Numerical investigation on mechanism and fluid flow behavior of goaf water inrush: a case study of Dongyu coal mine
Abstract Goaf water inrush has become one of the most prominent issues threatening the safety production of coal mines. To better understand how this hazard develops, a mechanical model and a nonlinear flow model were used to study an inrush that occurred in Dongyu mine. Based on the dominant hydrau...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Niu, Xiaohong [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2022 |
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| Schlagwörter: |
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| Anmerkung: |
© The Author(s), under exclusive licence to Springer Nature B.V. 2022 |
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| Übergeordnetes Werk: |
Enthalten in: Natural hazards - Springer Netherlands, 1988, 113(2022), 3 vom: 19. Mai, Seite 1783-1802 |
|---|---|
| Übergeordnetes Werk: |
volume:113 ; year:2022 ; number:3 ; day:19 ; month:05 ; pages:1783-1802 |
| Links: |
|---|
| DOI / URN: |
10.1007/s11069-022-05369-w |
|---|
| Katalog-ID: |
OLC2079560808 |
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| 520 | |a Abstract Goaf water inrush has become one of the most prominent issues threatening the safety production of coal mines. To better understand how this hazard develops, a mechanical model and a nonlinear flow model were used to study an inrush that occurred in Dongyu mine. Based on the dominant hydraulic characteristics of groundwater in the fractured rock and the variation of plastic zone during excavation, an equivalent water inrush channel (WIC) was established. By coupling Darcy flow, Brinkman flow, and turbulent flow, the nonlinear flow model reproduced the dynamic process of goaf water inrush. Results showed that the inrush was a result of the combined effect of excavation disturbance and hydraulic pressure of goaf water. With the digging of roadway, fractures in the floor communicated with fractures in the roof of goaf, promoting the generation of WIC. Under the action of hydraulic pressure, groundwater entered into the roadway from the caving goaf along WIC and the disaster occurred. Along the flow path, water pressure continued to decrease, while velocity showed an increasing trend, but both of them remained stable in the roadway. In addition, as a transition area of laminar in caving goaf and turbulent in roadway, the permeability of WIC had a significant impact on the evolution of water pressure and velocity along the flow path. The results provided references for understanding the evolution process of similar inrush hazards. | ||
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10.1007/s11069-022-05369-w doi (DE-627)OLC2079560808 (DE-He213)s11069-022-05369-w-p DE-627 ger DE-627 rakwb eng 550 VZ 14 ssgn Niu, Xiaohong verfasserin aut Numerical investigation on mechanism and fluid flow behavior of goaf water inrush: a case study of Dongyu coal mine 2022 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Author(s), under exclusive licence to Springer Nature B.V. 2022 Abstract Goaf water inrush has become one of the most prominent issues threatening the safety production of coal mines. To better understand how this hazard develops, a mechanical model and a nonlinear flow model were used to study an inrush that occurred in Dongyu mine. Based on the dominant hydraulic characteristics of groundwater in the fractured rock and the variation of plastic zone during excavation, an equivalent water inrush channel (WIC) was established. By coupling Darcy flow, Brinkman flow, and turbulent flow, the nonlinear flow model reproduced the dynamic process of goaf water inrush. Results showed that the inrush was a result of the combined effect of excavation disturbance and hydraulic pressure of goaf water. With the digging of roadway, fractures in the floor communicated with fractures in the roof of goaf, promoting the generation of WIC. Under the action of hydraulic pressure, groundwater entered into the roadway from the caving goaf along WIC and the disaster occurred. Along the flow path, water pressure continued to decrease, while velocity showed an increasing trend, but both of them remained stable in the roadway. In addition, as a transition area of laminar in caving goaf and turbulent in roadway, the permeability of WIC had a significant impact on the evolution of water pressure and velocity along the flow path. The results provided references for understanding the evolution process of similar inrush hazards. Numerical simulation Nonlinear flow Plastic zone Preferential pathway Goaf water inrush Feng, Guorui (orcid)0000-0002-0686-1376 aut Liu, Qin aut Han, Yanna aut Qian, Ruipeng aut Enthalten in Natural hazards Springer Netherlands, 1988 113(2022), 3 vom: 19. Mai, Seite 1783-1802 (DE-627)131010271 (DE-600)1088547-X (DE-576)03285272X 0921-030X nnns volume:113 year:2022 number:3 day:19 month:05 pages:1783-1802 https://doi.org/10.1007/s11069-022-05369-w lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-MAT SSG-OPC-GGO SSG-OPC-MAT AR 113 2022 3 19 05 1783-1802 |
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10.1007/s11069-022-05369-w doi (DE-627)OLC2079560808 (DE-He213)s11069-022-05369-w-p DE-627 ger DE-627 rakwb eng 550 VZ 14 ssgn Niu, Xiaohong verfasserin aut Numerical investigation on mechanism and fluid flow behavior of goaf water inrush: a case study of Dongyu coal mine 2022 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Author(s), under exclusive licence to Springer Nature B.V. 2022 Abstract Goaf water inrush has become one of the most prominent issues threatening the safety production of coal mines. To better understand how this hazard develops, a mechanical model and a nonlinear flow model were used to study an inrush that occurred in Dongyu mine. Based on the dominant hydraulic characteristics of groundwater in the fractured rock and the variation of plastic zone during excavation, an equivalent water inrush channel (WIC) was established. By coupling Darcy flow, Brinkman flow, and turbulent flow, the nonlinear flow model reproduced the dynamic process of goaf water inrush. Results showed that the inrush was a result of the combined effect of excavation disturbance and hydraulic pressure of goaf water. With the digging of roadway, fractures in the floor communicated with fractures in the roof of goaf, promoting the generation of WIC. Under the action of hydraulic pressure, groundwater entered into the roadway from the caving goaf along WIC and the disaster occurred. Along the flow path, water pressure continued to decrease, while velocity showed an increasing trend, but both of them remained stable in the roadway. In addition, as a transition area of laminar in caving goaf and turbulent in roadway, the permeability of WIC had a significant impact on the evolution of water pressure and velocity along the flow path. The results provided references for understanding the evolution process of similar inrush hazards. Numerical simulation Nonlinear flow Plastic zone Preferential pathway Goaf water inrush Feng, Guorui (orcid)0000-0002-0686-1376 aut Liu, Qin aut Han, Yanna aut Qian, Ruipeng aut Enthalten in Natural hazards Springer Netherlands, 1988 113(2022), 3 vom: 19. Mai, Seite 1783-1802 (DE-627)131010271 (DE-600)1088547-X (DE-576)03285272X 0921-030X nnns volume:113 year:2022 number:3 day:19 month:05 pages:1783-1802 https://doi.org/10.1007/s11069-022-05369-w lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-MAT SSG-OPC-GGO SSG-OPC-MAT AR 113 2022 3 19 05 1783-1802 |
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10.1007/s11069-022-05369-w doi (DE-627)OLC2079560808 (DE-He213)s11069-022-05369-w-p DE-627 ger DE-627 rakwb eng 550 VZ 14 ssgn Niu, Xiaohong verfasserin aut Numerical investigation on mechanism and fluid flow behavior of goaf water inrush: a case study of Dongyu coal mine 2022 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Author(s), under exclusive licence to Springer Nature B.V. 2022 Abstract Goaf water inrush has become one of the most prominent issues threatening the safety production of coal mines. To better understand how this hazard develops, a mechanical model and a nonlinear flow model were used to study an inrush that occurred in Dongyu mine. Based on the dominant hydraulic characteristics of groundwater in the fractured rock and the variation of plastic zone during excavation, an equivalent water inrush channel (WIC) was established. By coupling Darcy flow, Brinkman flow, and turbulent flow, the nonlinear flow model reproduced the dynamic process of goaf water inrush. Results showed that the inrush was a result of the combined effect of excavation disturbance and hydraulic pressure of goaf water. With the digging of roadway, fractures in the floor communicated with fractures in the roof of goaf, promoting the generation of WIC. Under the action of hydraulic pressure, groundwater entered into the roadway from the caving goaf along WIC and the disaster occurred. Along the flow path, water pressure continued to decrease, while velocity showed an increasing trend, but both of them remained stable in the roadway. In addition, as a transition area of laminar in caving goaf and turbulent in roadway, the permeability of WIC had a significant impact on the evolution of water pressure and velocity along the flow path. The results provided references for understanding the evolution process of similar inrush hazards. Numerical simulation Nonlinear flow Plastic zone Preferential pathway Goaf water inrush Feng, Guorui (orcid)0000-0002-0686-1376 aut Liu, Qin aut Han, Yanna aut Qian, Ruipeng aut Enthalten in Natural hazards Springer Netherlands, 1988 113(2022), 3 vom: 19. Mai, Seite 1783-1802 (DE-627)131010271 (DE-600)1088547-X (DE-576)03285272X 0921-030X nnns volume:113 year:2022 number:3 day:19 month:05 pages:1783-1802 https://doi.org/10.1007/s11069-022-05369-w lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-MAT SSG-OPC-GGO SSG-OPC-MAT AR 113 2022 3 19 05 1783-1802 |
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10.1007/s11069-022-05369-w doi (DE-627)OLC2079560808 (DE-He213)s11069-022-05369-w-p DE-627 ger DE-627 rakwb eng 550 VZ 14 ssgn Niu, Xiaohong verfasserin aut Numerical investigation on mechanism and fluid flow behavior of goaf water inrush: a case study of Dongyu coal mine 2022 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Author(s), under exclusive licence to Springer Nature B.V. 2022 Abstract Goaf water inrush has become one of the most prominent issues threatening the safety production of coal mines. To better understand how this hazard develops, a mechanical model and a nonlinear flow model were used to study an inrush that occurred in Dongyu mine. Based on the dominant hydraulic characteristics of groundwater in the fractured rock and the variation of plastic zone during excavation, an equivalent water inrush channel (WIC) was established. By coupling Darcy flow, Brinkman flow, and turbulent flow, the nonlinear flow model reproduced the dynamic process of goaf water inrush. Results showed that the inrush was a result of the combined effect of excavation disturbance and hydraulic pressure of goaf water. With the digging of roadway, fractures in the floor communicated with fractures in the roof of goaf, promoting the generation of WIC. Under the action of hydraulic pressure, groundwater entered into the roadway from the caving goaf along WIC and the disaster occurred. Along the flow path, water pressure continued to decrease, while velocity showed an increasing trend, but both of them remained stable in the roadway. In addition, as a transition area of laminar in caving goaf and turbulent in roadway, the permeability of WIC had a significant impact on the evolution of water pressure and velocity along the flow path. The results provided references for understanding the evolution process of similar inrush hazards. Numerical simulation Nonlinear flow Plastic zone Preferential pathway Goaf water inrush Feng, Guorui (orcid)0000-0002-0686-1376 aut Liu, Qin aut Han, Yanna aut Qian, Ruipeng aut Enthalten in Natural hazards Springer Netherlands, 1988 113(2022), 3 vom: 19. Mai, Seite 1783-1802 (DE-627)131010271 (DE-600)1088547-X (DE-576)03285272X 0921-030X nnns volume:113 year:2022 number:3 day:19 month:05 pages:1783-1802 https://doi.org/10.1007/s11069-022-05369-w lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-MAT SSG-OPC-GGO SSG-OPC-MAT AR 113 2022 3 19 05 1783-1802 |
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10.1007/s11069-022-05369-w doi (DE-627)OLC2079560808 (DE-He213)s11069-022-05369-w-p DE-627 ger DE-627 rakwb eng 550 VZ 14 ssgn Niu, Xiaohong verfasserin aut Numerical investigation on mechanism and fluid flow behavior of goaf water inrush: a case study of Dongyu coal mine 2022 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Author(s), under exclusive licence to Springer Nature B.V. 2022 Abstract Goaf water inrush has become one of the most prominent issues threatening the safety production of coal mines. To better understand how this hazard develops, a mechanical model and a nonlinear flow model were used to study an inrush that occurred in Dongyu mine. Based on the dominant hydraulic characteristics of groundwater in the fractured rock and the variation of plastic zone during excavation, an equivalent water inrush channel (WIC) was established. By coupling Darcy flow, Brinkman flow, and turbulent flow, the nonlinear flow model reproduced the dynamic process of goaf water inrush. Results showed that the inrush was a result of the combined effect of excavation disturbance and hydraulic pressure of goaf water. With the digging of roadway, fractures in the floor communicated with fractures in the roof of goaf, promoting the generation of WIC. Under the action of hydraulic pressure, groundwater entered into the roadway from the caving goaf along WIC and the disaster occurred. Along the flow path, water pressure continued to decrease, while velocity showed an increasing trend, but both of them remained stable in the roadway. In addition, as a transition area of laminar in caving goaf and turbulent in roadway, the permeability of WIC had a significant impact on the evolution of water pressure and velocity along the flow path. The results provided references for understanding the evolution process of similar inrush hazards. Numerical simulation Nonlinear flow Plastic zone Preferential pathway Goaf water inrush Feng, Guorui (orcid)0000-0002-0686-1376 aut Liu, Qin aut Han, Yanna aut Qian, Ruipeng aut Enthalten in Natural hazards Springer Netherlands, 1988 113(2022), 3 vom: 19. Mai, Seite 1783-1802 (DE-627)131010271 (DE-600)1088547-X (DE-576)03285272X 0921-030X nnns volume:113 year:2022 number:3 day:19 month:05 pages:1783-1802 https://doi.org/10.1007/s11069-022-05369-w lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-MAT SSG-OPC-GGO SSG-OPC-MAT AR 113 2022 3 19 05 1783-1802 |
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Numerical investigation on mechanism and fluid flow behavior of goaf water inrush: a case study of Dongyu coal mine |
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Numerical investigation on mechanism and fluid flow behavior of goaf water inrush: a case study of Dongyu coal mine |
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Niu, Xiaohong |
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Niu, Xiaohong Feng, Guorui Liu, Qin Han, Yanna Qian, Ruipeng |
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numerical investigation on mechanism and fluid flow behavior of goaf water inrush: a case study of dongyu coal mine |
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Numerical investigation on mechanism and fluid flow behavior of goaf water inrush: a case study of Dongyu coal mine |
| abstract |
Abstract Goaf water inrush has become one of the most prominent issues threatening the safety production of coal mines. To better understand how this hazard develops, a mechanical model and a nonlinear flow model were used to study an inrush that occurred in Dongyu mine. Based on the dominant hydraulic characteristics of groundwater in the fractured rock and the variation of plastic zone during excavation, an equivalent water inrush channel (WIC) was established. By coupling Darcy flow, Brinkman flow, and turbulent flow, the nonlinear flow model reproduced the dynamic process of goaf water inrush. Results showed that the inrush was a result of the combined effect of excavation disturbance and hydraulic pressure of goaf water. With the digging of roadway, fractures in the floor communicated with fractures in the roof of goaf, promoting the generation of WIC. Under the action of hydraulic pressure, groundwater entered into the roadway from the caving goaf along WIC and the disaster occurred. Along the flow path, water pressure continued to decrease, while velocity showed an increasing trend, but both of them remained stable in the roadway. In addition, as a transition area of laminar in caving goaf and turbulent in roadway, the permeability of WIC had a significant impact on the evolution of water pressure and velocity along the flow path. The results provided references for understanding the evolution process of similar inrush hazards. © The Author(s), under exclusive licence to Springer Nature B.V. 2022 |
| abstractGer |
Abstract Goaf water inrush has become one of the most prominent issues threatening the safety production of coal mines. To better understand how this hazard develops, a mechanical model and a nonlinear flow model were used to study an inrush that occurred in Dongyu mine. Based on the dominant hydraulic characteristics of groundwater in the fractured rock and the variation of plastic zone during excavation, an equivalent water inrush channel (WIC) was established. By coupling Darcy flow, Brinkman flow, and turbulent flow, the nonlinear flow model reproduced the dynamic process of goaf water inrush. Results showed that the inrush was a result of the combined effect of excavation disturbance and hydraulic pressure of goaf water. With the digging of roadway, fractures in the floor communicated with fractures in the roof of goaf, promoting the generation of WIC. Under the action of hydraulic pressure, groundwater entered into the roadway from the caving goaf along WIC and the disaster occurred. Along the flow path, water pressure continued to decrease, while velocity showed an increasing trend, but both of them remained stable in the roadway. In addition, as a transition area of laminar in caving goaf and turbulent in roadway, the permeability of WIC had a significant impact on the evolution of water pressure and velocity along the flow path. The results provided references for understanding the evolution process of similar inrush hazards. © The Author(s), under exclusive licence to Springer Nature B.V. 2022 |
| abstract_unstemmed |
Abstract Goaf water inrush has become one of the most prominent issues threatening the safety production of coal mines. To better understand how this hazard develops, a mechanical model and a nonlinear flow model were used to study an inrush that occurred in Dongyu mine. Based on the dominant hydraulic characteristics of groundwater in the fractured rock and the variation of plastic zone during excavation, an equivalent water inrush channel (WIC) was established. By coupling Darcy flow, Brinkman flow, and turbulent flow, the nonlinear flow model reproduced the dynamic process of goaf water inrush. Results showed that the inrush was a result of the combined effect of excavation disturbance and hydraulic pressure of goaf water. With the digging of roadway, fractures in the floor communicated with fractures in the roof of goaf, promoting the generation of WIC. Under the action of hydraulic pressure, groundwater entered into the roadway from the caving goaf along WIC and the disaster occurred. Along the flow path, water pressure continued to decrease, while velocity showed an increasing trend, but both of them remained stable in the roadway. In addition, as a transition area of laminar in caving goaf and turbulent in roadway, the permeability of WIC had a significant impact on the evolution of water pressure and velocity along the flow path. The results provided references for understanding the evolution process of similar inrush hazards. © The Author(s), under exclusive licence to Springer Nature B.V. 2022 |
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Numerical investigation on mechanism and fluid flow behavior of goaf water inrush: a case study of Dongyu coal mine |
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