Approach to increasing the quality of pressure-relieved gas drained from protected coal seam using surface borehole and its industrial application

Abstract During mining of lower protective coal seam, a surface borehole can efficiently extract not only the pressure-relieved gas from the protected layer, but also the gas from the mining layer gob. If the distance between the borehole and gob is too large, the quantity of gas drained from the pr...
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Gespeichert in:

Autor*in:	Liu, Yingke [verfasserIn] Zhou, Fubao Wang, Jianlong Liu, Jun

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2015

Schlagwörter:	Surface borehole Gas drainage Borehole bottom resistance Pressure-relieved gas

Anmerkung:	© The Author(s) 2015

Übergeordnetes Werk:	Enthalten in: International journal of coal science & technology - Heidelberg : Springer, 2014, 2(2015), 1 vom: März, Seite 46-51
Übergeordnetes Werk:	volume:2 ; year:2015 ; number:1 ; month:03 ; pages:46-51

Links:	Volltext

DOI / URN:	10.1007/s40789-015-0064-3

Katalog-ID:	SPR037747584

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520			\|a Abstract During mining of lower protective coal seam, a surface borehole can efficiently extract not only the pressure-relieved gas from the protected layer, but also the gas from the mining layer gob. If the distance between the borehole and gob is too large, the quantity of gas drained from the protected layer decreases substantially. To solve this problem, a mathematical model for extracting pressure-relieved gas from a protected coal seam using a surface borehole was established, based on the radial gas flow theory and law of conservation of energy. The key factors influencing the quantity of gas and the drainage flow network using a surface borehole were presented. The results show that the quantity of pressure-relieved gas drained from the protected layer can be significantly increased by increasing the flow resistance of the borehole bottom. Application of this method in the Wulan Coal Mine of the Shenhua Group significantly increased the flow of pure gas and the gas concentration (by factors of 1.8 and 2.0, respectively), thus demonstrating the remarkable effects of this method.
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allfields	10.1007/s40789-015-0064-3 doi (DE-627)SPR037747584 (SPR)s40789-015-0064-3-e DE-627 ger DE-627 rakwb eng Liu, Yingke verfasserin aut Approach to increasing the quality of pressure-relieved gas drained from protected coal seam using surface borehole and its industrial application 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2015 Abstract During mining of lower protective coal seam, a surface borehole can efficiently extract not only the pressure-relieved gas from the protected layer, but also the gas from the mining layer gob. If the distance between the borehole and gob is too large, the quantity of gas drained from the protected layer decreases substantially. To solve this problem, a mathematical model for extracting pressure-relieved gas from a protected coal seam using a surface borehole was established, based on the radial gas flow theory and law of conservation of energy. The key factors influencing the quantity of gas and the drainage flow network using a surface borehole were presented. The results show that the quantity of pressure-relieved gas drained from the protected layer can be significantly increased by increasing the flow resistance of the borehole bottom. Application of this method in the Wulan Coal Mine of the Shenhua Group significantly increased the flow of pure gas and the gas concentration (by factors of 1.8 and 2.0, respectively), thus demonstrating the remarkable effects of this method. Surface borehole (dpeaa)DE-He213 Gas drainage (dpeaa)DE-He213 Borehole bottom resistance (dpeaa)DE-He213 Pressure-relieved gas (dpeaa)DE-He213 Zhou, Fubao aut Wang, Jianlong aut Liu, Jun aut Enthalten in International journal of coal science & technology Heidelberg : Springer, 2014 2(2015), 1 vom: März, Seite 46-51 (DE-627)815914261 (DE-600)2806625-X 2198-7823 nnns volume:2 year:2015 number:1 month:03 pages:46-51 https://dx.doi.org/10.1007/s40789-015-0064-3 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 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_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2 2015 1 03 46-51
spelling	10.1007/s40789-015-0064-3 doi (DE-627)SPR037747584 (SPR)s40789-015-0064-3-e DE-627 ger DE-627 rakwb eng Liu, Yingke verfasserin aut Approach to increasing the quality of pressure-relieved gas drained from protected coal seam using surface borehole and its industrial application 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2015 Abstract During mining of lower protective coal seam, a surface borehole can efficiently extract not only the pressure-relieved gas from the protected layer, but also the gas from the mining layer gob. If the distance between the borehole and gob is too large, the quantity of gas drained from the protected layer decreases substantially. To solve this problem, a mathematical model for extracting pressure-relieved gas from a protected coal seam using a surface borehole was established, based on the radial gas flow theory and law of conservation of energy. The key factors influencing the quantity of gas and the drainage flow network using a surface borehole were presented. The results show that the quantity of pressure-relieved gas drained from the protected layer can be significantly increased by increasing the flow resistance of the borehole bottom. Application of this method in the Wulan Coal Mine of the Shenhua Group significantly increased the flow of pure gas and the gas concentration (by factors of 1.8 and 2.0, respectively), thus demonstrating the remarkable effects of this method. Surface borehole (dpeaa)DE-He213 Gas drainage (dpeaa)DE-He213 Borehole bottom resistance (dpeaa)DE-He213 Pressure-relieved gas (dpeaa)DE-He213 Zhou, Fubao aut Wang, Jianlong aut Liu, Jun aut Enthalten in International journal of coal science & technology Heidelberg : Springer, 2014 2(2015), 1 vom: März, Seite 46-51 (DE-627)815914261 (DE-600)2806625-X 2198-7823 nnns volume:2 year:2015 number:1 month:03 pages:46-51 https://dx.doi.org/10.1007/s40789-015-0064-3 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 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_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2 2015 1 03 46-51
allfields_unstemmed	10.1007/s40789-015-0064-3 doi (DE-627)SPR037747584 (SPR)s40789-015-0064-3-e DE-627 ger DE-627 rakwb eng Liu, Yingke verfasserin aut Approach to increasing the quality of pressure-relieved gas drained from protected coal seam using surface borehole and its industrial application 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2015 Abstract During mining of lower protective coal seam, a surface borehole can efficiently extract not only the pressure-relieved gas from the protected layer, but also the gas from the mining layer gob. If the distance between the borehole and gob is too large, the quantity of gas drained from the protected layer decreases substantially. To solve this problem, a mathematical model for extracting pressure-relieved gas from a protected coal seam using a surface borehole was established, based on the radial gas flow theory and law of conservation of energy. The key factors influencing the quantity of gas and the drainage flow network using a surface borehole were presented. The results show that the quantity of pressure-relieved gas drained from the protected layer can be significantly increased by increasing the flow resistance of the borehole bottom. Application of this method in the Wulan Coal Mine of the Shenhua Group significantly increased the flow of pure gas and the gas concentration (by factors of 1.8 and 2.0, respectively), thus demonstrating the remarkable effects of this method. Surface borehole (dpeaa)DE-He213 Gas drainage (dpeaa)DE-He213 Borehole bottom resistance (dpeaa)DE-He213 Pressure-relieved gas (dpeaa)DE-He213 Zhou, Fubao aut Wang, Jianlong aut Liu, Jun aut Enthalten in International journal of coal science & technology Heidelberg : Springer, 2014 2(2015), 1 vom: März, Seite 46-51 (DE-627)815914261 (DE-600)2806625-X 2198-7823 nnns volume:2 year:2015 number:1 month:03 pages:46-51 https://dx.doi.org/10.1007/s40789-015-0064-3 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 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_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2 2015 1 03 46-51
allfieldsGer	10.1007/s40789-015-0064-3 doi (DE-627)SPR037747584 (SPR)s40789-015-0064-3-e DE-627 ger DE-627 rakwb eng Liu, Yingke verfasserin aut Approach to increasing the quality of pressure-relieved gas drained from protected coal seam using surface borehole and its industrial application 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2015 Abstract During mining of lower protective coal seam, a surface borehole can efficiently extract not only the pressure-relieved gas from the protected layer, but also the gas from the mining layer gob. If the distance between the borehole and gob is too large, the quantity of gas drained from the protected layer decreases substantially. To solve this problem, a mathematical model for extracting pressure-relieved gas from a protected coal seam using a surface borehole was established, based on the radial gas flow theory and law of conservation of energy. The key factors influencing the quantity of gas and the drainage flow network using a surface borehole were presented. The results show that the quantity of pressure-relieved gas drained from the protected layer can be significantly increased by increasing the flow resistance of the borehole bottom. Application of this method in the Wulan Coal Mine of the Shenhua Group significantly increased the flow of pure gas and the gas concentration (by factors of 1.8 and 2.0, respectively), thus demonstrating the remarkable effects of this method. Surface borehole (dpeaa)DE-He213 Gas drainage (dpeaa)DE-He213 Borehole bottom resistance (dpeaa)DE-He213 Pressure-relieved gas (dpeaa)DE-He213 Zhou, Fubao aut Wang, Jianlong aut Liu, Jun aut Enthalten in International journal of coal science & technology Heidelberg : Springer, 2014 2(2015), 1 vom: März, Seite 46-51 (DE-627)815914261 (DE-600)2806625-X 2198-7823 nnns volume:2 year:2015 number:1 month:03 pages:46-51 https://dx.doi.org/10.1007/s40789-015-0064-3 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 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_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2 2015 1 03 46-51
allfieldsSound	10.1007/s40789-015-0064-3 doi (DE-627)SPR037747584 (SPR)s40789-015-0064-3-e DE-627 ger DE-627 rakwb eng Liu, Yingke verfasserin aut Approach to increasing the quality of pressure-relieved gas drained from protected coal seam using surface borehole and its industrial application 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2015 Abstract During mining of lower protective coal seam, a surface borehole can efficiently extract not only the pressure-relieved gas from the protected layer, but also the gas from the mining layer gob. If the distance between the borehole and gob is too large, the quantity of gas drained from the protected layer decreases substantially. To solve this problem, a mathematical model for extracting pressure-relieved gas from a protected coal seam using a surface borehole was established, based on the radial gas flow theory and law of conservation of energy. The key factors influencing the quantity of gas and the drainage flow network using a surface borehole were presented. The results show that the quantity of pressure-relieved gas drained from the protected layer can be significantly increased by increasing the flow resistance of the borehole bottom. Application of this method in the Wulan Coal Mine of the Shenhua Group significantly increased the flow of pure gas and the gas concentration (by factors of 1.8 and 2.0, respectively), thus demonstrating the remarkable effects of this method. Surface borehole (dpeaa)DE-He213 Gas drainage (dpeaa)DE-He213 Borehole bottom resistance (dpeaa)DE-He213 Pressure-relieved gas (dpeaa)DE-He213 Zhou, Fubao aut Wang, Jianlong aut Liu, Jun aut Enthalten in International journal of coal science & technology Heidelberg : Springer, 2014 2(2015), 1 vom: März, Seite 46-51 (DE-627)815914261 (DE-600)2806625-X 2198-7823 nnns volume:2 year:2015 number:1 month:03 pages:46-51 https://dx.doi.org/10.1007/s40789-015-0064-3 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 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_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2 2015 1 03 46-51
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source	Enthalten in International journal of coal science & technology 2(2015), 1 vom: März, Seite 46-51 volume:2 year:2015 number:1 month:03 pages:46-51
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author	Liu, Yingke
spellingShingle	Liu, Yingke misc Surface borehole misc Gas drainage misc Borehole bottom resistance misc Pressure-relieved gas Approach to increasing the quality of pressure-relieved gas drained from protected coal seam using surface borehole and its industrial application
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topic_title	Approach to increasing the quality of pressure-relieved gas drained from protected coal seam using surface borehole and its industrial application Surface borehole (dpeaa)DE-He213 Gas drainage (dpeaa)DE-He213 Borehole bottom resistance (dpeaa)DE-He213 Pressure-relieved gas (dpeaa)DE-He213
topic	misc Surface borehole misc Gas drainage misc Borehole bottom resistance misc Pressure-relieved gas
topic_unstemmed	misc Surface borehole misc Gas drainage misc Borehole bottom resistance misc Pressure-relieved gas
topic_browse	misc Surface borehole misc Gas drainage misc Borehole bottom resistance misc Pressure-relieved gas
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title	Approach to increasing the quality of pressure-relieved gas drained from protected coal seam using surface borehole and its industrial application
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title_full	Approach to increasing the quality of pressure-relieved gas drained from protected coal seam using surface borehole and its industrial application
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title_sort	approach to increasing the quality of pressure-relieved gas drained from protected coal seam using surface borehole and its industrial application
title_auth	Approach to increasing the quality of pressure-relieved gas drained from protected coal seam using surface borehole and its industrial application
abstract	Abstract During mining of lower protective coal seam, a surface borehole can efficiently extract not only the pressure-relieved gas from the protected layer, but also the gas from the mining layer gob. If the distance between the borehole and gob is too large, the quantity of gas drained from the protected layer decreases substantially. To solve this problem, a mathematical model for extracting pressure-relieved gas from a protected coal seam using a surface borehole was established, based on the radial gas flow theory and law of conservation of energy. The key factors influencing the quantity of gas and the drainage flow network using a surface borehole were presented. The results show that the quantity of pressure-relieved gas drained from the protected layer can be significantly increased by increasing the flow resistance of the borehole bottom. Application of this method in the Wulan Coal Mine of the Shenhua Group significantly increased the flow of pure gas and the gas concentration (by factors of 1.8 and 2.0, respectively), thus demonstrating the remarkable effects of this method. © The Author(s) 2015
abstractGer	Abstract During mining of lower protective coal seam, a surface borehole can efficiently extract not only the pressure-relieved gas from the protected layer, but also the gas from the mining layer gob. If the distance between the borehole and gob is too large, the quantity of gas drained from the protected layer decreases substantially. To solve this problem, a mathematical model for extracting pressure-relieved gas from a protected coal seam using a surface borehole was established, based on the radial gas flow theory and law of conservation of energy. The key factors influencing the quantity of gas and the drainage flow network using a surface borehole were presented. The results show that the quantity of pressure-relieved gas drained from the protected layer can be significantly increased by increasing the flow resistance of the borehole bottom. Application of this method in the Wulan Coal Mine of the Shenhua Group significantly increased the flow of pure gas and the gas concentration (by factors of 1.8 and 2.0, respectively), thus demonstrating the remarkable effects of this method. © The Author(s) 2015
abstract_unstemmed	Abstract During mining of lower protective coal seam, a surface borehole can efficiently extract not only the pressure-relieved gas from the protected layer, but also the gas from the mining layer gob. If the distance between the borehole and gob is too large, the quantity of gas drained from the protected layer decreases substantially. To solve this problem, a mathematical model for extracting pressure-relieved gas from a protected coal seam using a surface borehole was established, based on the radial gas flow theory and law of conservation of energy. The key factors influencing the quantity of gas and the drainage flow network using a surface borehole were presented. The results show that the quantity of pressure-relieved gas drained from the protected layer can be significantly increased by increasing the flow resistance of the borehole bottom. Application of this method in the Wulan Coal Mine of the Shenhua Group significantly increased the flow of pure gas and the gas concentration (by factors of 1.8 and 2.0, respectively), thus demonstrating the remarkable effects of this method. © The Author(s) 2015
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title_short	Approach to increasing the quality of pressure-relieved gas drained from protected coal seam using surface borehole and its industrial application
url	https://dx.doi.org/10.1007/s40789-015-0064-3
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