Stability and Control of Retracement Channels in Thin Seam Working Faces with Soft Roof
To reduce the risk of roof falling and rib spalling during equipment retracement in thin coal seam faces with soft roofs, the 25070 working face of Xuehu Coal Mine was taken as the research object, and theoretical analysis, numerical simulation, and field practice methods were used. Under different...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/8667471 |
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| _version_ | 1832549189444173824 |
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| author | Binbin Qin Fulian He Xiaobing Zhang Xuhui Xu Wei Wang Liang Li Chen Dou |
| author_facet | Binbin Qin Fulian He Xiaobing Zhang Xuhui Xu Wei Wang Liang Li Chen Dou |
| author_sort | Binbin Qin |
| collection | DOAJ |
| description | To reduce the risk of roof falling and rib spalling during equipment retracement in thin coal seam faces with soft roofs, the 25070 working face of Xuehu Coal Mine was taken as the research object, and theoretical analysis, numerical simulation, and field practice methods were used. Under different space relationships between retracement channels and main roof fracture, the load of hydraulic supports was quantitatively analyzed. The relationship between the working resistance of the hydraulic support and the sinking rotation angle of the immediate roof was analyzed, and a reasonable time for the arrangement of the retracement channel was determined. The sublevel excavation technology and the combined support technology of roof anchor cables and coal rib anchors were proposed. The field application shows that the falling height and rate of movable prop of the hydraulic supports, working resistance of the hydraulic supports, and the roof subsidence all meet the requirements of safety production during the terminal mining period, and the surrounding rock control effect of retracement channel was determined to be good. The safe and efficient mining of the coal mine is ensured, and the research results can provide guidance for similar working faces. |
| format | Article |
| id | doaj-art-b3caaad86f2c4437aba5e937aee74d7f |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-b3caaad86f2c4437aba5e937aee74d7f2025-02-03T06:11:59ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/86674718667471Stability and Control of Retracement Channels in Thin Seam Working Faces with Soft RoofBinbin Qin0Fulian He1Xiaobing Zhang2Xuhui Xu3Wei Wang4Liang Li5Chen Dou6School of Energy and Mining Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaSafety and Emergency Management Research Center, Henan Polytechnic University, Henan 454003, ChinaSchool of Energy and Mining Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaSafety and Emergency Management Research Center, Henan Polytechnic University, Henan 454003, ChinaSchool of Energy and Mining Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaXuehu Coal Mine, Shenhuo Group, Henan 476643, ChinaTo reduce the risk of roof falling and rib spalling during equipment retracement in thin coal seam faces with soft roofs, the 25070 working face of Xuehu Coal Mine was taken as the research object, and theoretical analysis, numerical simulation, and field practice methods were used. Under different space relationships between retracement channels and main roof fracture, the load of hydraulic supports was quantitatively analyzed. The relationship between the working resistance of the hydraulic support and the sinking rotation angle of the immediate roof was analyzed, and a reasonable time for the arrangement of the retracement channel was determined. The sublevel excavation technology and the combined support technology of roof anchor cables and coal rib anchors were proposed. The field application shows that the falling height and rate of movable prop of the hydraulic supports, working resistance of the hydraulic supports, and the roof subsidence all meet the requirements of safety production during the terminal mining period, and the surrounding rock control effect of retracement channel was determined to be good. The safe and efficient mining of the coal mine is ensured, and the research results can provide guidance for similar working faces.http://dx.doi.org/10.1155/2021/8667471 |
| spellingShingle | Binbin Qin Fulian He Xiaobing Zhang Xuhui Xu Wei Wang Liang Li Chen Dou Stability and Control of Retracement Channels in Thin Seam Working Faces with Soft Roof Shock and Vibration |
| title | Stability and Control of Retracement Channels in Thin Seam Working Faces with Soft Roof |
| title_full | Stability and Control of Retracement Channels in Thin Seam Working Faces with Soft Roof |
| title_fullStr | Stability and Control of Retracement Channels in Thin Seam Working Faces with Soft Roof |
| title_full_unstemmed | Stability and Control of Retracement Channels in Thin Seam Working Faces with Soft Roof |
| title_short | Stability and Control of Retracement Channels in Thin Seam Working Faces with Soft Roof |
| title_sort | stability and control of retracement channels in thin seam working faces with soft roof |
| url | http://dx.doi.org/10.1155/2021/8667471 |
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