Stability Control and Quick Retaining Technology of Gob-Side Entry: A Case Study
In Chinese coal mines, gob-side entry retaining, an efficient technique for coal mining, has been widely used. However, severe roadway deformation and slow retaining speed have gravely restricted the popularization and its application. Hence, in order to solve the existing problems, the deformation...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/7357320 |
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| author | Hengjie Luan Yujing Jiang Lujie Zhou Huili Lin |
| author_facet | Hengjie Luan Yujing Jiang Lujie Zhou Huili Lin |
| author_sort | Hengjie Luan |
| collection | DOAJ |
| description | In Chinese coal mines, gob-side entry retaining, an efficient technique for coal mining, has been widely used. However, severe roadway deformation and slow retaining speed have gravely restricted the popularization and its application. Hence, in order to solve the existing problems, the deformation mechanism of gob-side entry was studied. Then, a new approach for gob-side entry retaining technique (GERT) was proposed to increase the speed of gob-side entry retaining. Finally, the application effect of the new GERT method was tested and analysed. The results show that the rotation and subsidence of roof key block B lead to severe deformation of roadway. And the proposed gob-side entry stability control technology can affectively resist the severe roadway deformation. Compared with the conventional support method for gob-side entry retaining, GERT has completed the complex wall construction work in advance, thereby simplifying the process of gob-side entry retaining and increasing the speed of gob-side entry retaining. When retaining the entry in panel 183U04 with the new support method, the entry retaining speed significantly improved from 0.25 m/h to 1.0 m/h compared with the traditional method, and then the problem of gob-side entry severe deformation was solved. |
| format | Article |
| id | doaj-art-806afe88c1ce4dbfab8cdc124dc963e2 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-806afe88c1ce4dbfab8cdc124dc963e22025-02-03T05:45:27ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/73573207357320Stability Control and Quick Retaining Technology of Gob-Side Entry: A Case StudyHengjie Luan0Yujing Jiang1Lujie Zhou2Huili Lin3State Key Laboratory of Mining Disaster Prevention and Control Co-founded By Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, ChinaState Key Laboratory of Mining Disaster Prevention and Control Co-founded By Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, ChinaState Key Laboratory of Mining Disaster Prevention and Control Co-founded By Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, ChinaChina Coal Research Institute, Beijing 100013, ChinaIn Chinese coal mines, gob-side entry retaining, an efficient technique for coal mining, has been widely used. However, severe roadway deformation and slow retaining speed have gravely restricted the popularization and its application. Hence, in order to solve the existing problems, the deformation mechanism of gob-side entry was studied. Then, a new approach for gob-side entry retaining technique (GERT) was proposed to increase the speed of gob-side entry retaining. Finally, the application effect of the new GERT method was tested and analysed. The results show that the rotation and subsidence of roof key block B lead to severe deformation of roadway. And the proposed gob-side entry stability control technology can affectively resist the severe roadway deformation. Compared with the conventional support method for gob-side entry retaining, GERT has completed the complex wall construction work in advance, thereby simplifying the process of gob-side entry retaining and increasing the speed of gob-side entry retaining. When retaining the entry in panel 183U04 with the new support method, the entry retaining speed significantly improved from 0.25 m/h to 1.0 m/h compared with the traditional method, and then the problem of gob-side entry severe deformation was solved.http://dx.doi.org/10.1155/2018/7357320 |
| spellingShingle | Hengjie Luan Yujing Jiang Lujie Zhou Huili Lin Stability Control and Quick Retaining Technology of Gob-Side Entry: A Case Study Advances in Civil Engineering |
| title | Stability Control and Quick Retaining Technology of Gob-Side Entry: A Case Study |
| title_full | Stability Control and Quick Retaining Technology of Gob-Side Entry: A Case Study |
| title_fullStr | Stability Control and Quick Retaining Technology of Gob-Side Entry: A Case Study |
| title_full_unstemmed | Stability Control and Quick Retaining Technology of Gob-Side Entry: A Case Study |
| title_short | Stability Control and Quick Retaining Technology of Gob-Side Entry: A Case Study |
| title_sort | stability control and quick retaining technology of gob side entry a case study |
| url | http://dx.doi.org/10.1155/2018/7357320 |
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