Research on the Deformation Characteristics and Support Technology of a Bottom Gas Extraction Roadway under Repeated Interference
Taking Pingbao Coal Mine as the engineering background, the stress distribution, surrounding rock displacement, and plastic zone distribution characteristics of a bottom gas extraction roadway are simulated by FLAC3D under multiple disturbances. The mining disturbance due to the overlying coal seam...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2019-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/1413568 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832548465555537920 |
|---|---|
| author | Rongkun Pan Zhihui Ma Minggao Yu Shuaidong Wu |
| author_facet | Rongkun Pan Zhihui Ma Minggao Yu Shuaidong Wu |
| author_sort | Rongkun Pan |
| collection | DOAJ |
| description | Taking Pingbao Coal Mine as the engineering background, the stress distribution, surrounding rock displacement, and plastic zone distribution characteristics of a bottom gas extraction roadway are simulated by FLAC3D under multiple disturbances. The mining disturbance due to the overlying coal seam is obtained: the deformation of the roof subsidence and lower rib closure of the bottom gas extraction roadway are larger than the floor heave and upper rib closure, respectively. According to the mechanical analysis of the bottom gas extraction roadway, the equations for calculating the displacement at each point on the surface of the bottom gas extraction roadway and the methods for calculating the maximum displacement, the maximum normal stress, and the maximum shear stress are obtained to reasonably explain the deformation of the bottom gas extraction roadway under multiple disturbances. Then, the bolt-mesh-anchor and ladder beam support mode are designed. After onsite observation of the bottom gas extraction roadway of the 12030 coal mining face of the Pingbao Coal Mine, it is concluded that the deformation characteristics of the bottom gas extraction roadway basically conform to the abovementioned equations and that the support is effective. This paper can provide a reference for the optimization of bottom gas extraction roadway positioning, the determination of support parameters, and the deformation prediction around a bottom gas extraction roadway under similar conditions. |
| format | Article |
| id | doaj-art-760c60a3f0f74d9e9691c4256c6ef955 |
| 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-760c60a3f0f74d9e9691c4256c6ef9552025-02-03T06:13:57ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/14135681413568Research on the Deformation Characteristics and Support Technology of a Bottom Gas Extraction Roadway under Repeated InterferenceRongkun Pan0Zhihui Ma1Minggao Yu2Shuaidong Wu3College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, ChinaCollege of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, ChinaCollege of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, ChinaProduction Technology Department, Yima Coal Industry Group Co., Ltd, Sanmenxia 472300, ChinaTaking Pingbao Coal Mine as the engineering background, the stress distribution, surrounding rock displacement, and plastic zone distribution characteristics of a bottom gas extraction roadway are simulated by FLAC3D under multiple disturbances. The mining disturbance due to the overlying coal seam is obtained: the deformation of the roof subsidence and lower rib closure of the bottom gas extraction roadway are larger than the floor heave and upper rib closure, respectively. According to the mechanical analysis of the bottom gas extraction roadway, the equations for calculating the displacement at each point on the surface of the bottom gas extraction roadway and the methods for calculating the maximum displacement, the maximum normal stress, and the maximum shear stress are obtained to reasonably explain the deformation of the bottom gas extraction roadway under multiple disturbances. Then, the bolt-mesh-anchor and ladder beam support mode are designed. After onsite observation of the bottom gas extraction roadway of the 12030 coal mining face of the Pingbao Coal Mine, it is concluded that the deformation characteristics of the bottom gas extraction roadway basically conform to the abovementioned equations and that the support is effective. This paper can provide a reference for the optimization of bottom gas extraction roadway positioning, the determination of support parameters, and the deformation prediction around a bottom gas extraction roadway under similar conditions.http://dx.doi.org/10.1155/2019/1413568 |
| spellingShingle | Rongkun Pan Zhihui Ma Minggao Yu Shuaidong Wu Research on the Deformation Characteristics and Support Technology of a Bottom Gas Extraction Roadway under Repeated Interference Advances in Civil Engineering |
| title | Research on the Deformation Characteristics and Support Technology of a Bottom Gas Extraction Roadway under Repeated Interference |
| title_full | Research on the Deformation Characteristics and Support Technology of a Bottom Gas Extraction Roadway under Repeated Interference |
| title_fullStr | Research on the Deformation Characteristics and Support Technology of a Bottom Gas Extraction Roadway under Repeated Interference |
| title_full_unstemmed | Research on the Deformation Characteristics and Support Technology of a Bottom Gas Extraction Roadway under Repeated Interference |
| title_short | Research on the Deformation Characteristics and Support Technology of a Bottom Gas Extraction Roadway under Repeated Interference |
| title_sort | research on the deformation characteristics and support technology of a bottom gas extraction roadway under repeated interference |
| url | http://dx.doi.org/10.1155/2019/1413568 |
| work_keys_str_mv | AT rongkunpan researchonthedeformationcharacteristicsandsupporttechnologyofabottomgasextractionroadwayunderrepeatedinterference AT zhihuima researchonthedeformationcharacteristicsandsupporttechnologyofabottomgasextractionroadwayunderrepeatedinterference AT minggaoyu researchonthedeformationcharacteristicsandsupporttechnologyofabottomgasextractionroadwayunderrepeatedinterference AT shuaidongwu researchonthedeformationcharacteristicsandsupporttechnologyofabottomgasextractionroadwayunderrepeatedinterference |