Cocompetitive Characteristics and Quantitative Design of Engineering Parameters for Coal Gas Predrainage Boreholes
Quantitative design of the optimal gas extraction engineering parameters has always been a key scientific problem to meet the predrainage target of the coal seam, which is paid great attention to and urgently expected to solve for the gas extraction engineering of coal mine. In this paper, the gover...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-01-01
|
| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2022/5943321 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832554634551492608 |
|---|---|
| author | Tong-qiang Xia Jiao-fei He Zi-long Li Xiao-yan Sun Dun-shuai Sun Jian-hang Lu Hao-jie Cui |
| author_facet | Tong-qiang Xia Jiao-fei He Zi-long Li Xiao-yan Sun Dun-shuai Sun Jian-hang Lu Hao-jie Cui |
| author_sort | Tong-qiang Xia |
| collection | DOAJ |
| description | Quantitative design of the optimal gas extraction engineering parameters has always been a key scientific problem to meet the predrainage target of the coal seam, which is paid great attention to and urgently expected to solve for the gas extraction engineering of coal mine. In this paper, the governing equation of the evolution of coal seam gas content is established under the interference and cooperation of gas extraction by boreholes, and the calculation formula of gas cooperative efficiency is defined. Based on gas-air mixed flow, a multifield coupling 3d model of coal gas extraction using boreholes was developed. The content, method, and principle of optimal spacing parameter design of extraction borehole were proposed, and the constraint conditions and objective function of optimal design were constructed. The flow characteristics of gas extraction using boreholes in the coal seam area and the influence of different parameters on gas extraction effect are studied. The cooperative and competitive behaviors of gas extraction by boreholes in coal seam are revealed. The results show that borehole spacing, seam fracture permeability, and gas adsorption constant have significant effects on the synergistic and competitive effects of gas extraction, while the negative pressure of gas extraction and coal matrix permeability have little effects, but the negative pressure of gas extraction has great effects on gas extraction concentration. Finally, Comsol With Matlab is used to solve the multiconstraint nonlinear optimization problem of gas drainage engineering parameters along coal seam in 18401 working face of Tunlan Coal Mine. The effect of actual gas extraction investigation is very remarkable, which provides a quantitative calculation basis for scientific gas extraction in coal mine. |
| format | Article |
| id | doaj-art-5548f7c68d2d4b8ba417260d13cf8687 |
| institution | Kabale University |
| issn | 1468-8123 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-5548f7c68d2d4b8ba417260d13cf86872025-02-03T05:51:01ZengWileyGeofluids1468-81232022-01-01202210.1155/2022/5943321Cocompetitive Characteristics and Quantitative Design of Engineering Parameters for Coal Gas Predrainage BoreholesTong-qiang Xia0Jiao-fei He1Zi-long Li2Xiao-yan Sun3Dun-shuai Sun4Jian-hang Lu5Hao-jie Cui6School of Low Carbon Energy and Power EngineeringSchool of Low Carbon Energy and Power EngineeringSchool of Low Carbon Energy and Power EngineeringHancheng Zaozhuang Industrial Co.School of Low Carbon Energy and Power EngineeringSchool of Low Carbon Energy and Power EngineeringSchool of Low Carbon Energy and Power EngineeringQuantitative design of the optimal gas extraction engineering parameters has always been a key scientific problem to meet the predrainage target of the coal seam, which is paid great attention to and urgently expected to solve for the gas extraction engineering of coal mine. In this paper, the governing equation of the evolution of coal seam gas content is established under the interference and cooperation of gas extraction by boreholes, and the calculation formula of gas cooperative efficiency is defined. Based on gas-air mixed flow, a multifield coupling 3d model of coal gas extraction using boreholes was developed. The content, method, and principle of optimal spacing parameter design of extraction borehole were proposed, and the constraint conditions and objective function of optimal design were constructed. The flow characteristics of gas extraction using boreholes in the coal seam area and the influence of different parameters on gas extraction effect are studied. The cooperative and competitive behaviors of gas extraction by boreholes in coal seam are revealed. The results show that borehole spacing, seam fracture permeability, and gas adsorption constant have significant effects on the synergistic and competitive effects of gas extraction, while the negative pressure of gas extraction and coal matrix permeability have little effects, but the negative pressure of gas extraction has great effects on gas extraction concentration. Finally, Comsol With Matlab is used to solve the multiconstraint nonlinear optimization problem of gas drainage engineering parameters along coal seam in 18401 working face of Tunlan Coal Mine. The effect of actual gas extraction investigation is very remarkable, which provides a quantitative calculation basis for scientific gas extraction in coal mine.http://dx.doi.org/10.1155/2022/5943321 |
| spellingShingle | Tong-qiang Xia Jiao-fei He Zi-long Li Xiao-yan Sun Dun-shuai Sun Jian-hang Lu Hao-jie Cui Cocompetitive Characteristics and Quantitative Design of Engineering Parameters for Coal Gas Predrainage Boreholes Geofluids |
| title | Cocompetitive Characteristics and Quantitative Design of Engineering Parameters for Coal Gas Predrainage Boreholes |
| title_full | Cocompetitive Characteristics and Quantitative Design of Engineering Parameters for Coal Gas Predrainage Boreholes |
| title_fullStr | Cocompetitive Characteristics and Quantitative Design of Engineering Parameters for Coal Gas Predrainage Boreholes |
| title_full_unstemmed | Cocompetitive Characteristics and Quantitative Design of Engineering Parameters for Coal Gas Predrainage Boreholes |
| title_short | Cocompetitive Characteristics and Quantitative Design of Engineering Parameters for Coal Gas Predrainage Boreholes |
| title_sort | cocompetitive characteristics and quantitative design of engineering parameters for coal gas predrainage boreholes |
| url | http://dx.doi.org/10.1155/2022/5943321 |
| work_keys_str_mv | AT tongqiangxia cocompetitivecharacteristicsandquantitativedesignofengineeringparametersforcoalgaspredrainageboreholes AT jiaofeihe cocompetitivecharacteristicsandquantitativedesignofengineeringparametersforcoalgaspredrainageboreholes AT zilongli cocompetitivecharacteristicsandquantitativedesignofengineeringparametersforcoalgaspredrainageboreholes AT xiaoyansun cocompetitivecharacteristicsandquantitativedesignofengineeringparametersforcoalgaspredrainageboreholes AT dunshuaisun cocompetitivecharacteristicsandquantitativedesignofengineeringparametersforcoalgaspredrainageboreholes AT jianhanglu cocompetitivecharacteristicsandquantitativedesignofengineeringparametersforcoalgaspredrainageboreholes AT haojiecui cocompetitivecharacteristicsandquantitativedesignofengineeringparametersforcoalgaspredrainageboreholes |