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...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2019-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/3891080 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832552101348114432 |
|---|---|
| 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. |
| format | Article |
| id | doaj-art-dd595628335c4427b5c79480b0f1c00c |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| 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 |