Geophysical characteristics of anthracites with various structures: a case study on the southern Qinshui Basin, north China
Abstract Deformation of coals under tectonic movements could cause reduction of mechanical strength and enhancement of gas adsorption, which might result in coal and gas outburst, and cause safety and environmental issues. In this study, geophysical characteristics of coals with various structures w...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Teng, Juan [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2022 |
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| Schlagwörter: |
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| Anmerkung: |
© Higher Education Press 2022 |
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| Übergeordnetes Werk: |
Enthalten in: Frontiers of earth science in China - Beijing : Higher Education Press, 2007, 16(2022), 3 vom: Sept., Seite 696-710 |
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| Übergeordnetes Werk: |
volume:16 ; year:2022 ; number:3 ; month:09 ; pages:696-710 |
| Links: |
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| DOI / URN: |
10.1007/s11707-022-1020-3 |
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| 520 | |a Abstract Deformation of coals under tectonic movements could cause reduction of mechanical strength and enhancement of gas adsorption, which might result in coal and gas outburst, and cause safety and environmental issues. In this study, geophysical characteristics of coals with various structures were investigated with a special emphasis on characterization of pore size distribution, rock mechanical strength, acoustic emission, resistivity and acoustic velocity of anthracites with three types of structures in the Qinshui Basin, north China. The studied No. 3 coal seam developed three types of structures, namely undeformed coal, cataclastic coal, and granular coal. Petrographic observations under scanning electron microscope and pore size distribution using $ N_{2} $ and $ CO_{2} $ adsorption of anthracites of three types show that the undeformed coal consists of primary micropores, and cataclastic coal is mainly composed of mesopores and well-connected fractures. In comparison, granular coal has the least mesopores. Rock mechanical strength, acoustic emission, resistivity and acoustic velocity of coals with three structure types were investigated under uniaxial and triaxial compression. With increasing degree of deformation of anthracites, compression strength, Young’s modulus, density, acoustic emission counting and acoustic velocity decreases, while resistivity increases. We suggest that the evolution of pore size distribution of anthracites with increasing degree of deformation contributed to variations of geophysical characteristics of coals with different structures to some extent. | ||
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| 650 | 4 | |a acoustic emission |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a electrical resistivity |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a acoustic velocity |7 (dpeaa)DE-He213 | |
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10.1007/s11707-022-1020-3 doi (DE-627)SPR051310996 (SPR)s11707-022-1020-3-e DE-627 ger DE-627 rakwb eng Teng, Juan verfasserin aut Geophysical characteristics of anthracites with various structures: a case study on the southern Qinshui Basin, north China 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Higher Education Press 2022 Abstract Deformation of coals under tectonic movements could cause reduction of mechanical strength and enhancement of gas adsorption, which might result in coal and gas outburst, and cause safety and environmental issues. In this study, geophysical characteristics of coals with various structures were investigated with a special emphasis on characterization of pore size distribution, rock mechanical strength, acoustic emission, resistivity and acoustic velocity of anthracites with three types of structures in the Qinshui Basin, north China. The studied No. 3 coal seam developed three types of structures, namely undeformed coal, cataclastic coal, and granular coal. Petrographic observations under scanning electron microscope and pore size distribution using $ N_{2} $ and $ CO_{2} $ adsorption of anthracites of three types show that the undeformed coal consists of primary micropores, and cataclastic coal is mainly composed of mesopores and well-connected fractures. In comparison, granular coal has the least mesopores. Rock mechanical strength, acoustic emission, resistivity and acoustic velocity of coals with three structure types were investigated under uniaxial and triaxial compression. With increasing degree of deformation of anthracites, compression strength, Young’s modulus, density, acoustic emission counting and acoustic velocity decreases, while resistivity increases. We suggest that the evolution of pore size distribution of anthracites with increasing degree of deformation contributed to variations of geophysical characteristics of coals with different structures to some extent. geophysical characteristics (dpeaa)DE-He213 coal structures (dpeaa)DE-He213 pore size distribution (dpeaa)DE-He213 acoustic emission (dpeaa)DE-He213 electrical resistivity (dpeaa)DE-He213 acoustic velocity (dpeaa)DE-He213 Wen, Zhigang aut Li, Chen aut Meng, Lingye aut Enthalten in Frontiers of earth science in China Beijing : Higher Education Press, 2007 16(2022), 3 vom: Sept., Seite 696-710 (DE-627)546007406 (DE-600)2389435-0 1673-7490 nnns volume:16 year:2022 number:3 month:09 pages:696-710 https://dx.doi.org/10.1007/s11707-022-1020-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_120 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 AR 16 2022 3 09 696-710 |
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10.1007/s11707-022-1020-3 doi (DE-627)SPR051310996 (SPR)s11707-022-1020-3-e DE-627 ger DE-627 rakwb eng Teng, Juan verfasserin aut Geophysical characteristics of anthracites with various structures: a case study on the southern Qinshui Basin, north China 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Higher Education Press 2022 Abstract Deformation of coals under tectonic movements could cause reduction of mechanical strength and enhancement of gas adsorption, which might result in coal and gas outburst, and cause safety and environmental issues. In this study, geophysical characteristics of coals with various structures were investigated with a special emphasis on characterization of pore size distribution, rock mechanical strength, acoustic emission, resistivity and acoustic velocity of anthracites with three types of structures in the Qinshui Basin, north China. The studied No. 3 coal seam developed three types of structures, namely undeformed coal, cataclastic coal, and granular coal. Petrographic observations under scanning electron microscope and pore size distribution using $ N_{2} $ and $ CO_{2} $ adsorption of anthracites of three types show that the undeformed coal consists of primary micropores, and cataclastic coal is mainly composed of mesopores and well-connected fractures. In comparison, granular coal has the least mesopores. Rock mechanical strength, acoustic emission, resistivity and acoustic velocity of coals with three structure types were investigated under uniaxial and triaxial compression. With increasing degree of deformation of anthracites, compression strength, Young’s modulus, density, acoustic emission counting and acoustic velocity decreases, while resistivity increases. We suggest that the evolution of pore size distribution of anthracites with increasing degree of deformation contributed to variations of geophysical characteristics of coals with different structures to some extent. geophysical characteristics (dpeaa)DE-He213 coal structures (dpeaa)DE-He213 pore size distribution (dpeaa)DE-He213 acoustic emission (dpeaa)DE-He213 electrical resistivity (dpeaa)DE-He213 acoustic velocity (dpeaa)DE-He213 Wen, Zhigang aut Li, Chen aut Meng, Lingye aut Enthalten in Frontiers of earth science in China Beijing : Higher Education Press, 2007 16(2022), 3 vom: Sept., Seite 696-710 (DE-627)546007406 (DE-600)2389435-0 1673-7490 nnns volume:16 year:2022 number:3 month:09 pages:696-710 https://dx.doi.org/10.1007/s11707-022-1020-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_120 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 AR 16 2022 3 09 696-710 |
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10.1007/s11707-022-1020-3 doi (DE-627)SPR051310996 (SPR)s11707-022-1020-3-e DE-627 ger DE-627 rakwb eng Teng, Juan verfasserin aut Geophysical characteristics of anthracites with various structures: a case study on the southern Qinshui Basin, north China 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Higher Education Press 2022 Abstract Deformation of coals under tectonic movements could cause reduction of mechanical strength and enhancement of gas adsorption, which might result in coal and gas outburst, and cause safety and environmental issues. In this study, geophysical characteristics of coals with various structures were investigated with a special emphasis on characterization of pore size distribution, rock mechanical strength, acoustic emission, resistivity and acoustic velocity of anthracites with three types of structures in the Qinshui Basin, north China. The studied No. 3 coal seam developed three types of structures, namely undeformed coal, cataclastic coal, and granular coal. Petrographic observations under scanning electron microscope and pore size distribution using $ N_{2} $ and $ CO_{2} $ adsorption of anthracites of three types show that the undeformed coal consists of primary micropores, and cataclastic coal is mainly composed of mesopores and well-connected fractures. In comparison, granular coal has the least mesopores. Rock mechanical strength, acoustic emission, resistivity and acoustic velocity of coals with three structure types were investigated under uniaxial and triaxial compression. With increasing degree of deformation of anthracites, compression strength, Young’s modulus, density, acoustic emission counting and acoustic velocity decreases, while resistivity increases. We suggest that the evolution of pore size distribution of anthracites with increasing degree of deformation contributed to variations of geophysical characteristics of coals with different structures to some extent. geophysical characteristics (dpeaa)DE-He213 coal structures (dpeaa)DE-He213 pore size distribution (dpeaa)DE-He213 acoustic emission (dpeaa)DE-He213 electrical resistivity (dpeaa)DE-He213 acoustic velocity (dpeaa)DE-He213 Wen, Zhigang aut Li, Chen aut Meng, Lingye aut Enthalten in Frontiers of earth science in China Beijing : Higher Education Press, 2007 16(2022), 3 vom: Sept., Seite 696-710 (DE-627)546007406 (DE-600)2389435-0 1673-7490 nnns volume:16 year:2022 number:3 month:09 pages:696-710 https://dx.doi.org/10.1007/s11707-022-1020-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_120 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 AR 16 2022 3 09 696-710 |
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10.1007/s11707-022-1020-3 doi (DE-627)SPR051310996 (SPR)s11707-022-1020-3-e DE-627 ger DE-627 rakwb eng Teng, Juan verfasserin aut Geophysical characteristics of anthracites with various structures: a case study on the southern Qinshui Basin, north China 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Higher Education Press 2022 Abstract Deformation of coals under tectonic movements could cause reduction of mechanical strength and enhancement of gas adsorption, which might result in coal and gas outburst, and cause safety and environmental issues. In this study, geophysical characteristics of coals with various structures were investigated with a special emphasis on characterization of pore size distribution, rock mechanical strength, acoustic emission, resistivity and acoustic velocity of anthracites with three types of structures in the Qinshui Basin, north China. The studied No. 3 coal seam developed three types of structures, namely undeformed coal, cataclastic coal, and granular coal. Petrographic observations under scanning electron microscope and pore size distribution using $ N_{2} $ and $ CO_{2} $ adsorption of anthracites of three types show that the undeformed coal consists of primary micropores, and cataclastic coal is mainly composed of mesopores and well-connected fractures. In comparison, granular coal has the least mesopores. Rock mechanical strength, acoustic emission, resistivity and acoustic velocity of coals with three structure types were investigated under uniaxial and triaxial compression. With increasing degree of deformation of anthracites, compression strength, Young’s modulus, density, acoustic emission counting and acoustic velocity decreases, while resistivity increases. We suggest that the evolution of pore size distribution of anthracites with increasing degree of deformation contributed to variations of geophysical characteristics of coals with different structures to some extent. geophysical characteristics (dpeaa)DE-He213 coal structures (dpeaa)DE-He213 pore size distribution (dpeaa)DE-He213 acoustic emission (dpeaa)DE-He213 electrical resistivity (dpeaa)DE-He213 acoustic velocity (dpeaa)DE-He213 Wen, Zhigang aut Li, Chen aut Meng, Lingye aut Enthalten in Frontiers of earth science in China Beijing : Higher Education Press, 2007 16(2022), 3 vom: Sept., Seite 696-710 (DE-627)546007406 (DE-600)2389435-0 1673-7490 nnns volume:16 year:2022 number:3 month:09 pages:696-710 https://dx.doi.org/10.1007/s11707-022-1020-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_120 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 AR 16 2022 3 09 696-710 |
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10.1007/s11707-022-1020-3 doi (DE-627)SPR051310996 (SPR)s11707-022-1020-3-e DE-627 ger DE-627 rakwb eng Teng, Juan verfasserin aut Geophysical characteristics of anthracites with various structures: a case study on the southern Qinshui Basin, north China 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Higher Education Press 2022 Abstract Deformation of coals under tectonic movements could cause reduction of mechanical strength and enhancement of gas adsorption, which might result in coal and gas outburst, and cause safety and environmental issues. In this study, geophysical characteristics of coals with various structures were investigated with a special emphasis on characterization of pore size distribution, rock mechanical strength, acoustic emission, resistivity and acoustic velocity of anthracites with three types of structures in the Qinshui Basin, north China. The studied No. 3 coal seam developed three types of structures, namely undeformed coal, cataclastic coal, and granular coal. Petrographic observations under scanning electron microscope and pore size distribution using $ N_{2} $ and $ CO_{2} $ adsorption of anthracites of three types show that the undeformed coal consists of primary micropores, and cataclastic coal is mainly composed of mesopores and well-connected fractures. In comparison, granular coal has the least mesopores. Rock mechanical strength, acoustic emission, resistivity and acoustic velocity of coals with three structure types were investigated under uniaxial and triaxial compression. With increasing degree of deformation of anthracites, compression strength, Young’s modulus, density, acoustic emission counting and acoustic velocity decreases, while resistivity increases. We suggest that the evolution of pore size distribution of anthracites with increasing degree of deformation contributed to variations of geophysical characteristics of coals with different structures to some extent. geophysical characteristics (dpeaa)DE-He213 coal structures (dpeaa)DE-He213 pore size distribution (dpeaa)DE-He213 acoustic emission (dpeaa)DE-He213 electrical resistivity (dpeaa)DE-He213 acoustic velocity (dpeaa)DE-He213 Wen, Zhigang aut Li, Chen aut Meng, Lingye aut Enthalten in Frontiers of earth science in China Beijing : Higher Education Press, 2007 16(2022), 3 vom: Sept., Seite 696-710 (DE-627)546007406 (DE-600)2389435-0 1673-7490 nnns volume:16 year:2022 number:3 month:09 pages:696-710 https://dx.doi.org/10.1007/s11707-022-1020-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_120 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 AR 16 2022 3 09 696-710 |
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geophysical characteristics of anthracites with various structures: a case study on the southern qinshui basin, north china |
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Geophysical characteristics of anthracites with various structures: a case study on the southern Qinshui Basin, north China |
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Abstract Deformation of coals under tectonic movements could cause reduction of mechanical strength and enhancement of gas adsorption, which might result in coal and gas outburst, and cause safety and environmental issues. In this study, geophysical characteristics of coals with various structures were investigated with a special emphasis on characterization of pore size distribution, rock mechanical strength, acoustic emission, resistivity and acoustic velocity of anthracites with three types of structures in the Qinshui Basin, north China. The studied No. 3 coal seam developed three types of structures, namely undeformed coal, cataclastic coal, and granular coal. Petrographic observations under scanning electron microscope and pore size distribution using $ N_{2} $ and $ CO_{2} $ adsorption of anthracites of three types show that the undeformed coal consists of primary micropores, and cataclastic coal is mainly composed of mesopores and well-connected fractures. In comparison, granular coal has the least mesopores. Rock mechanical strength, acoustic emission, resistivity and acoustic velocity of coals with three structure types were investigated under uniaxial and triaxial compression. With increasing degree of deformation of anthracites, compression strength, Young’s modulus, density, acoustic emission counting and acoustic velocity decreases, while resistivity increases. We suggest that the evolution of pore size distribution of anthracites with increasing degree of deformation contributed to variations of geophysical characteristics of coals with different structures to some extent. © Higher Education Press 2022 |
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Abstract Deformation of coals under tectonic movements could cause reduction of mechanical strength and enhancement of gas adsorption, which might result in coal and gas outburst, and cause safety and environmental issues. In this study, geophysical characteristics of coals with various structures were investigated with a special emphasis on characterization of pore size distribution, rock mechanical strength, acoustic emission, resistivity and acoustic velocity of anthracites with three types of structures in the Qinshui Basin, north China. The studied No. 3 coal seam developed three types of structures, namely undeformed coal, cataclastic coal, and granular coal. Petrographic observations under scanning electron microscope and pore size distribution using $ N_{2} $ and $ CO_{2} $ adsorption of anthracites of three types show that the undeformed coal consists of primary micropores, and cataclastic coal is mainly composed of mesopores and well-connected fractures. In comparison, granular coal has the least mesopores. Rock mechanical strength, acoustic emission, resistivity and acoustic velocity of coals with three structure types were investigated under uniaxial and triaxial compression. With increasing degree of deformation of anthracites, compression strength, Young’s modulus, density, acoustic emission counting and acoustic velocity decreases, while resistivity increases. We suggest that the evolution of pore size distribution of anthracites with increasing degree of deformation contributed to variations of geophysical characteristics of coals with different structures to some extent. © Higher Education Press 2022 |
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Abstract Deformation of coals under tectonic movements could cause reduction of mechanical strength and enhancement of gas adsorption, which might result in coal and gas outburst, and cause safety and environmental issues. In this study, geophysical characteristics of coals with various structures were investigated with a special emphasis on characterization of pore size distribution, rock mechanical strength, acoustic emission, resistivity and acoustic velocity of anthracites with three types of structures in the Qinshui Basin, north China. The studied No. 3 coal seam developed three types of structures, namely undeformed coal, cataclastic coal, and granular coal. Petrographic observations under scanning electron microscope and pore size distribution using $ N_{2} $ and $ CO_{2} $ adsorption of anthracites of three types show that the undeformed coal consists of primary micropores, and cataclastic coal is mainly composed of mesopores and well-connected fractures. In comparison, granular coal has the least mesopores. Rock mechanical strength, acoustic emission, resistivity and acoustic velocity of coals with three structure types were investigated under uniaxial and triaxial compression. With increasing degree of deformation of anthracites, compression strength, Young’s modulus, density, acoustic emission counting and acoustic velocity decreases, while resistivity increases. We suggest that the evolution of pore size distribution of anthracites with increasing degree of deformation contributed to variations of geophysical characteristics of coals with different structures to some extent. © Higher Education Press 2022 |
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