Field Monitoring of Delayed Coal Burst in an Advancing Entry of a Deep Coal Mine
Abstract Delayed coal bursts in deep coal mines have caused significant fatalities and economic losses in recent years. Instead of occurring right around the advancing face, this particular type of coal burst is characterized by its occurrence at a certain distance behind the advancing face. To bett...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Shi, Qingwen [verfasserIn] Pan, Junfeng [verfasserIn] Wang, Shuwen [verfasserIn] Liu, Shaohong [verfasserIn] Mishra, Brijes [verfasserIn] Seitz, Shannon [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2021 |
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| Schlagwörter: |
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| Anmerkung: |
© Society for Mining, Metallurgy & Exploration Inc. 2021 |
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| Übergeordnetes Werk: |
Enthalten in: Mining, metallurgy & exploration - [Cham] : Springer International Publishing, 2019, 38(2021), 6 vom: 19. Okt., Seite 2417-2431 |
|---|---|
| Übergeordnetes Werk: |
volume:38 ; year:2021 ; number:6 ; day:19 ; month:10 ; pages:2417-2431 |
| Links: |
|---|
| DOI / URN: |
10.1007/s42461-021-00508-6 |
|---|
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SPR045606935 |
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| 520 | |a Abstract Delayed coal bursts in deep coal mines have caused significant fatalities and economic losses in recent years. Instead of occurring right around the advancing face, this particular type of coal burst is characterized by its occurrence at a certain distance behind the advancing face. To better understand the mechanism of a delayed coal burst, we used borehole camera, electromagnetic CT, and borehole deformation monitoring device to observe the fracturing and deformation process of an advancing entry’s surrounding coal in the field. Borehole camera detection showed a zonal disintegration phenomenon in the advancing entry’s surrounding coal. Electromagnetic CT detection showed that zonal disintegration developed within 14 days of excavation. Borehole deformation monitoring indicated a deformation rate difference between the intact zone and fractured zones. The deformation rate difference was observed to increase with time and cause increasing elastic energy accumulation in the intact zone. The cumulative elastic energy in the intact zone finally caused a delayed coal burst in the entry. Sensitivity analysis of the cumulative elastic energy was conducted based on a thick-walled model deduced from field detection. The model shows that the smaller thickness of the intact zone brings higher elastic energy in the intact zone. This investigation provides an improved understanding of delayed coal bursts in deep coal mines. | ||
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10.1007/s42461-021-00508-6 doi (DE-627)SPR045606935 (SPR)s42461-021-00508-6-e DE-627 ger DE-627 rakwb eng 620 660 ASE 620 660 ASE Shi, Qingwen verfasserin aut Field Monitoring of Delayed Coal Burst in an Advancing Entry of a Deep Coal Mine 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Society for Mining, Metallurgy & Exploration Inc. 2021 Abstract Delayed coal bursts in deep coal mines have caused significant fatalities and economic losses in recent years. Instead of occurring right around the advancing face, this particular type of coal burst is characterized by its occurrence at a certain distance behind the advancing face. To better understand the mechanism of a delayed coal burst, we used borehole camera, electromagnetic CT, and borehole deformation monitoring device to observe the fracturing and deformation process of an advancing entry’s surrounding coal in the field. Borehole camera detection showed a zonal disintegration phenomenon in the advancing entry’s surrounding coal. Electromagnetic CT detection showed that zonal disintegration developed within 14 days of excavation. Borehole deformation monitoring indicated a deformation rate difference between the intact zone and fractured zones. The deformation rate difference was observed to increase with time and cause increasing elastic energy accumulation in the intact zone. The cumulative elastic energy in the intact zone finally caused a delayed coal burst in the entry. Sensitivity analysis of the cumulative elastic energy was conducted based on a thick-walled model deduced from field detection. The model shows that the smaller thickness of the intact zone brings higher elastic energy in the intact zone. This investigation provides an improved understanding of delayed coal bursts in deep coal mines. Delayed coal burst (dpeaa)DE-He213 Field monitoring (dpeaa)DE-He213 Deep coal mine (dpeaa)DE-He213 Zonal disintegration (dpeaa)DE-He213 Deformation difference (dpeaa)DE-He213 Pan, Junfeng verfasserin aut Wang, Shuwen verfasserin aut Liu, Shaohong verfasserin aut Mishra, Brijes verfasserin aut Seitz, Shannon verfasserin aut Enthalten in Mining, metallurgy & exploration [Cham] : Springer International Publishing, 2019 38(2021), 6 vom: 19. Okt., Seite 2417-2431 (DE-627)1039800637 (DE-600)2947829-7 2524-3470 nnns volume:38 year:2021 number:6 day:19 month:10 pages:2417-2431 https://dx.doi.org/10.1007/s42461-021-00508-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA AR 38 2021 6 19 10 2417-2431 |
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10.1007/s42461-021-00508-6 doi (DE-627)SPR045606935 (SPR)s42461-021-00508-6-e DE-627 ger DE-627 rakwb eng 620 660 ASE 620 660 ASE Shi, Qingwen verfasserin aut Field Monitoring of Delayed Coal Burst in an Advancing Entry of a Deep Coal Mine 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Society for Mining, Metallurgy & Exploration Inc. 2021 Abstract Delayed coal bursts in deep coal mines have caused significant fatalities and economic losses in recent years. Instead of occurring right around the advancing face, this particular type of coal burst is characterized by its occurrence at a certain distance behind the advancing face. To better understand the mechanism of a delayed coal burst, we used borehole camera, electromagnetic CT, and borehole deformation monitoring device to observe the fracturing and deformation process of an advancing entry’s surrounding coal in the field. Borehole camera detection showed a zonal disintegration phenomenon in the advancing entry’s surrounding coal. Electromagnetic CT detection showed that zonal disintegration developed within 14 days of excavation. Borehole deformation monitoring indicated a deformation rate difference between the intact zone and fractured zones. The deformation rate difference was observed to increase with time and cause increasing elastic energy accumulation in the intact zone. The cumulative elastic energy in the intact zone finally caused a delayed coal burst in the entry. Sensitivity analysis of the cumulative elastic energy was conducted based on a thick-walled model deduced from field detection. The model shows that the smaller thickness of the intact zone brings higher elastic energy in the intact zone. This investigation provides an improved understanding of delayed coal bursts in deep coal mines. Delayed coal burst (dpeaa)DE-He213 Field monitoring (dpeaa)DE-He213 Deep coal mine (dpeaa)DE-He213 Zonal disintegration (dpeaa)DE-He213 Deformation difference (dpeaa)DE-He213 Pan, Junfeng verfasserin aut Wang, Shuwen verfasserin aut Liu, Shaohong verfasserin aut Mishra, Brijes verfasserin aut Seitz, Shannon verfasserin aut Enthalten in Mining, metallurgy & exploration [Cham] : Springer International Publishing, 2019 38(2021), 6 vom: 19. Okt., Seite 2417-2431 (DE-627)1039800637 (DE-600)2947829-7 2524-3470 nnns volume:38 year:2021 number:6 day:19 month:10 pages:2417-2431 https://dx.doi.org/10.1007/s42461-021-00508-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA AR 38 2021 6 19 10 2417-2431 |
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10.1007/s42461-021-00508-6 doi (DE-627)SPR045606935 (SPR)s42461-021-00508-6-e DE-627 ger DE-627 rakwb eng 620 660 ASE 620 660 ASE Shi, Qingwen verfasserin aut Field Monitoring of Delayed Coal Burst in an Advancing Entry of a Deep Coal Mine 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Society for Mining, Metallurgy & Exploration Inc. 2021 Abstract Delayed coal bursts in deep coal mines have caused significant fatalities and economic losses in recent years. Instead of occurring right around the advancing face, this particular type of coal burst is characterized by its occurrence at a certain distance behind the advancing face. To better understand the mechanism of a delayed coal burst, we used borehole camera, electromagnetic CT, and borehole deformation monitoring device to observe the fracturing and deformation process of an advancing entry’s surrounding coal in the field. Borehole camera detection showed a zonal disintegration phenomenon in the advancing entry’s surrounding coal. Electromagnetic CT detection showed that zonal disintegration developed within 14 days of excavation. Borehole deformation monitoring indicated a deformation rate difference between the intact zone and fractured zones. The deformation rate difference was observed to increase with time and cause increasing elastic energy accumulation in the intact zone. The cumulative elastic energy in the intact zone finally caused a delayed coal burst in the entry. Sensitivity analysis of the cumulative elastic energy was conducted based on a thick-walled model deduced from field detection. The model shows that the smaller thickness of the intact zone brings higher elastic energy in the intact zone. This investigation provides an improved understanding of delayed coal bursts in deep coal mines. Delayed coal burst (dpeaa)DE-He213 Field monitoring (dpeaa)DE-He213 Deep coal mine (dpeaa)DE-He213 Zonal disintegration (dpeaa)DE-He213 Deformation difference (dpeaa)DE-He213 Pan, Junfeng verfasserin aut Wang, Shuwen verfasserin aut Liu, Shaohong verfasserin aut Mishra, Brijes verfasserin aut Seitz, Shannon verfasserin aut Enthalten in Mining, metallurgy & exploration [Cham] : Springer International Publishing, 2019 38(2021), 6 vom: 19. Okt., Seite 2417-2431 (DE-627)1039800637 (DE-600)2947829-7 2524-3470 nnns volume:38 year:2021 number:6 day:19 month:10 pages:2417-2431 https://dx.doi.org/10.1007/s42461-021-00508-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA AR 38 2021 6 19 10 2417-2431 |
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10.1007/s42461-021-00508-6 doi (DE-627)SPR045606935 (SPR)s42461-021-00508-6-e DE-627 ger DE-627 rakwb eng 620 660 ASE 620 660 ASE Shi, Qingwen verfasserin aut Field Monitoring of Delayed Coal Burst in an Advancing Entry of a Deep Coal Mine 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Society for Mining, Metallurgy & Exploration Inc. 2021 Abstract Delayed coal bursts in deep coal mines have caused significant fatalities and economic losses in recent years. Instead of occurring right around the advancing face, this particular type of coal burst is characterized by its occurrence at a certain distance behind the advancing face. To better understand the mechanism of a delayed coal burst, we used borehole camera, electromagnetic CT, and borehole deformation monitoring device to observe the fracturing and deformation process of an advancing entry’s surrounding coal in the field. Borehole camera detection showed a zonal disintegration phenomenon in the advancing entry’s surrounding coal. Electromagnetic CT detection showed that zonal disintegration developed within 14 days of excavation. Borehole deformation monitoring indicated a deformation rate difference between the intact zone and fractured zones. The deformation rate difference was observed to increase with time and cause increasing elastic energy accumulation in the intact zone. The cumulative elastic energy in the intact zone finally caused a delayed coal burst in the entry. Sensitivity analysis of the cumulative elastic energy was conducted based on a thick-walled model deduced from field detection. The model shows that the smaller thickness of the intact zone brings higher elastic energy in the intact zone. This investigation provides an improved understanding of delayed coal bursts in deep coal mines. Delayed coal burst (dpeaa)DE-He213 Field monitoring (dpeaa)DE-He213 Deep coal mine (dpeaa)DE-He213 Zonal disintegration (dpeaa)DE-He213 Deformation difference (dpeaa)DE-He213 Pan, Junfeng verfasserin aut Wang, Shuwen verfasserin aut Liu, Shaohong verfasserin aut Mishra, Brijes verfasserin aut Seitz, Shannon verfasserin aut Enthalten in Mining, metallurgy & exploration [Cham] : Springer International Publishing, 2019 38(2021), 6 vom: 19. Okt., Seite 2417-2431 (DE-627)1039800637 (DE-600)2947829-7 2524-3470 nnns volume:38 year:2021 number:6 day:19 month:10 pages:2417-2431 https://dx.doi.org/10.1007/s42461-021-00508-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA AR 38 2021 6 19 10 2417-2431 |
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10.1007/s42461-021-00508-6 doi (DE-627)SPR045606935 (SPR)s42461-021-00508-6-e DE-627 ger DE-627 rakwb eng 620 660 ASE 620 660 ASE Shi, Qingwen verfasserin aut Field Monitoring of Delayed Coal Burst in an Advancing Entry of a Deep Coal Mine 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Society for Mining, Metallurgy & Exploration Inc. 2021 Abstract Delayed coal bursts in deep coal mines have caused significant fatalities and economic losses in recent years. Instead of occurring right around the advancing face, this particular type of coal burst is characterized by its occurrence at a certain distance behind the advancing face. To better understand the mechanism of a delayed coal burst, we used borehole camera, electromagnetic CT, and borehole deformation monitoring device to observe the fracturing and deformation process of an advancing entry’s surrounding coal in the field. Borehole camera detection showed a zonal disintegration phenomenon in the advancing entry’s surrounding coal. Electromagnetic CT detection showed that zonal disintegration developed within 14 days of excavation. Borehole deformation monitoring indicated a deformation rate difference between the intact zone and fractured zones. The deformation rate difference was observed to increase with time and cause increasing elastic energy accumulation in the intact zone. The cumulative elastic energy in the intact zone finally caused a delayed coal burst in the entry. Sensitivity analysis of the cumulative elastic energy was conducted based on a thick-walled model deduced from field detection. The model shows that the smaller thickness of the intact zone brings higher elastic energy in the intact zone. This investigation provides an improved understanding of delayed coal bursts in deep coal mines. Delayed coal burst (dpeaa)DE-He213 Field monitoring (dpeaa)DE-He213 Deep coal mine (dpeaa)DE-He213 Zonal disintegration (dpeaa)DE-He213 Deformation difference (dpeaa)DE-He213 Pan, Junfeng verfasserin aut Wang, Shuwen verfasserin aut Liu, Shaohong verfasserin aut Mishra, Brijes verfasserin aut Seitz, Shannon verfasserin aut Enthalten in Mining, metallurgy & exploration [Cham] : Springer International Publishing, 2019 38(2021), 6 vom: 19. Okt., Seite 2417-2431 (DE-627)1039800637 (DE-600)2947829-7 2524-3470 nnns volume:38 year:2021 number:6 day:19 month:10 pages:2417-2431 https://dx.doi.org/10.1007/s42461-021-00508-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA AR 38 2021 6 19 10 2417-2431 |
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Field Monitoring of Delayed Coal Burst in an Advancing Entry of a Deep Coal Mine |
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Field Monitoring of Delayed Coal Burst in an Advancing Entry of a Deep Coal Mine |
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Shi, Qingwen |
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Shi, Qingwen Pan, Junfeng Wang, Shuwen Liu, Shaohong Mishra, Brijes Seitz, Shannon |
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field monitoring of delayed coal burst in an advancing entry of a deep coal mine |
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Field Monitoring of Delayed Coal Burst in an Advancing Entry of a Deep Coal Mine |
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Abstract Delayed coal bursts in deep coal mines have caused significant fatalities and economic losses in recent years. Instead of occurring right around the advancing face, this particular type of coal burst is characterized by its occurrence at a certain distance behind the advancing face. To better understand the mechanism of a delayed coal burst, we used borehole camera, electromagnetic CT, and borehole deformation monitoring device to observe the fracturing and deformation process of an advancing entry’s surrounding coal in the field. Borehole camera detection showed a zonal disintegration phenomenon in the advancing entry’s surrounding coal. Electromagnetic CT detection showed that zonal disintegration developed within 14 days of excavation. Borehole deformation monitoring indicated a deformation rate difference between the intact zone and fractured zones. The deformation rate difference was observed to increase with time and cause increasing elastic energy accumulation in the intact zone. The cumulative elastic energy in the intact zone finally caused a delayed coal burst in the entry. Sensitivity analysis of the cumulative elastic energy was conducted based on a thick-walled model deduced from field detection. The model shows that the smaller thickness of the intact zone brings higher elastic energy in the intact zone. This investigation provides an improved understanding of delayed coal bursts in deep coal mines. © Society for Mining, Metallurgy & Exploration Inc. 2021 |
| abstractGer |
Abstract Delayed coal bursts in deep coal mines have caused significant fatalities and economic losses in recent years. Instead of occurring right around the advancing face, this particular type of coal burst is characterized by its occurrence at a certain distance behind the advancing face. To better understand the mechanism of a delayed coal burst, we used borehole camera, electromagnetic CT, and borehole deformation monitoring device to observe the fracturing and deformation process of an advancing entry’s surrounding coal in the field. Borehole camera detection showed a zonal disintegration phenomenon in the advancing entry’s surrounding coal. Electromagnetic CT detection showed that zonal disintegration developed within 14 days of excavation. Borehole deformation monitoring indicated a deformation rate difference between the intact zone and fractured zones. The deformation rate difference was observed to increase with time and cause increasing elastic energy accumulation in the intact zone. The cumulative elastic energy in the intact zone finally caused a delayed coal burst in the entry. Sensitivity analysis of the cumulative elastic energy was conducted based on a thick-walled model deduced from field detection. The model shows that the smaller thickness of the intact zone brings higher elastic energy in the intact zone. This investigation provides an improved understanding of delayed coal bursts in deep coal mines. © Society for Mining, Metallurgy & Exploration Inc. 2021 |
| abstract_unstemmed |
Abstract Delayed coal bursts in deep coal mines have caused significant fatalities and economic losses in recent years. Instead of occurring right around the advancing face, this particular type of coal burst is characterized by its occurrence at a certain distance behind the advancing face. To better understand the mechanism of a delayed coal burst, we used borehole camera, electromagnetic CT, and borehole deformation monitoring device to observe the fracturing and deformation process of an advancing entry’s surrounding coal in the field. Borehole camera detection showed a zonal disintegration phenomenon in the advancing entry’s surrounding coal. Electromagnetic CT detection showed that zonal disintegration developed within 14 days of excavation. Borehole deformation monitoring indicated a deformation rate difference between the intact zone and fractured zones. The deformation rate difference was observed to increase with time and cause increasing elastic energy accumulation in the intact zone. The cumulative elastic energy in the intact zone finally caused a delayed coal burst in the entry. Sensitivity analysis of the cumulative elastic energy was conducted based on a thick-walled model deduced from field detection. The model shows that the smaller thickness of the intact zone brings higher elastic energy in the intact zone. This investigation provides an improved understanding of delayed coal bursts in deep coal mines. © Society for Mining, Metallurgy & Exploration Inc. 2021 |
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Field Monitoring of Delayed Coal Burst in an Advancing Entry of a Deep Coal Mine |
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