Numerical Simulation of Parameters Optimization for Goaf Gas Boreholes

In view of the ground drilling of the N2206 working face in Shanxi Wangzhuang Coal Mine, the gas concentration is low and the extraction effect is not good. Fluent computational fluid dynamics software was used to simulate the ground extraction drilling position of the N2206 working face in the goaf...

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Main Authors: Jiajia Liu, Jianliang Gao, Ming Yang, Dan Wang, Liang Wang
Format: Article
Language:English
Published: Wiley 2019-01-01
Series:Advances in Civil Engineering
Online Access:http://dx.doi.org/10.1155/2019/3891080
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author Jiajia Liu
Jianliang Gao
Ming Yang
Dan Wang
Liang Wang
author_facet Jiajia Liu
Jianliang Gao
Ming Yang
Dan Wang
Liang Wang
author_sort Jiajia Liu
collection DOAJ
description In view of the ground drilling of the N2206 working face in Shanxi Wangzhuang Coal Mine, the gas concentration is low and the extraction effect is not good. Fluent computational fluid dynamics software was used to simulate the ground extraction drilling position of the N2206 working face in the goaf (the distance from the top of the coal seam and the distance from the return to the wind). The numerical simulation results show that when the final hole of the ground extraction hole in the goaf is 16 m from the roof of the coal seam and the distance from the return air is 45 m, the extraction effect is optimal. The average extraction gas volume is 9.78 m3/min, and the average extraction gas concentration is 43.95%, the best extraction effect is obtained. After optimizing the ground drilling position in the goaf and combining with the site implementation, the maximum gas scouring amount of the extraction is 12.59 m3/min, which is 3.42 m3/min higher than the original. The maximum gas concentration of extraction was 63.54%, which was 28.82% higher than the original. After optimization, the gas concentration of the extraction is more than 30%, and the extraction effect is very good. Field application results further validate the reliability of theoretical analysis and numerical simulation results.
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institution Kabale University
issn 1687-8086
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language English
publishDate 2019-01-01
publisher Wiley
record_format Article
series Advances in Civil Engineering
spelling doaj-art-dd595628335c4427b5c79480b0f1c00c2025-02-03T05:59:38ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/38910803891080Numerical Simulation of Parameters Optimization for Goaf Gas BoreholesJiajia Liu0Jianliang Gao1Ming Yang2Dan Wang3Liang Wang4State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo 454003, ChinaState Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo 454003, ChinaState Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo 454003, ChinaState Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo 454003, ChinaState Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo 454003, ChinaIn view of the ground drilling of the N2206 working face in Shanxi Wangzhuang Coal Mine, the gas concentration is low and the extraction effect is not good. Fluent computational fluid dynamics software was used to simulate the ground extraction drilling position of the N2206 working face in the goaf (the distance from the top of the coal seam and the distance from the return to the wind). The numerical simulation results show that when the final hole of the ground extraction hole in the goaf is 16 m from the roof of the coal seam and the distance from the return air is 45 m, the extraction effect is optimal. The average extraction gas volume is 9.78 m3/min, and the average extraction gas concentration is 43.95%, the best extraction effect is obtained. After optimizing the ground drilling position in the goaf and combining with the site implementation, the maximum gas scouring amount of the extraction is 12.59 m3/min, which is 3.42 m3/min higher than the original. The maximum gas concentration of extraction was 63.54%, which was 28.82% higher than the original. After optimization, the gas concentration of the extraction is more than 30%, and the extraction effect is very good. Field application results further validate the reliability of theoretical analysis and numerical simulation results.http://dx.doi.org/10.1155/2019/3891080
spellingShingle Jiajia Liu
Jianliang Gao
Ming Yang
Dan Wang
Liang Wang
Numerical Simulation of Parameters Optimization for Goaf Gas Boreholes
Advances in Civil Engineering
title Numerical Simulation of Parameters Optimization for Goaf Gas Boreholes
title_full Numerical Simulation of Parameters Optimization for Goaf Gas Boreholes
title_fullStr Numerical Simulation of Parameters Optimization for Goaf Gas Boreholes
title_full_unstemmed Numerical Simulation of Parameters Optimization for Goaf Gas Boreholes
title_short Numerical Simulation of Parameters Optimization for Goaf Gas Boreholes
title_sort numerical simulation of parameters optimization for goaf gas boreholes
url http://dx.doi.org/10.1155/2019/3891080
work_keys_str_mv AT jiajialiu numericalsimulationofparametersoptimizationforgoafgasboreholes
AT jianlianggao numericalsimulationofparametersoptimizationforgoafgasboreholes
AT mingyang numericalsimulationofparametersoptimizationforgoafgasboreholes
AT danwang numericalsimulationofparametersoptimizationforgoafgasboreholes
AT liangwang numericalsimulationofparametersoptimizationforgoafgasboreholes