Dynamic Effect and Control of Key Strata Break of Immediate Roof in Fully Mechanized Mining with Large Mining Height
This paper puts forward the concept of key strata in immediate roof (KSIF) and studied the dynamic effect and control mechanism of KSIF. The results show that KSIR controls the caving of its upper immediate roof strata; the break of KSIR has direct dynamic impact on its lower strata and this impact...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2015/657818 |
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| _version_ | 1832564477425352704 |
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| author | Yuan Yong Tu Shihao Zhang Xiaogang Li Bo |
| author_facet | Yuan Yong Tu Shihao Zhang Xiaogang Li Bo |
| author_sort | Yuan Yong |
| collection | DOAJ |
| description | This paper puts forward the concept of key strata in immediate roof (KSIF) and studied the dynamic effect and control mechanism of KSIF. The results show that KSIR controls the caving of its upper immediate roof strata; the break of KSIR has direct dynamic impact on its lower strata and this impact increases along with the increase of the thickness and hardness of the KSIR and the decrease of the distance to the working seam. The KSIR and main roof can easily form the bilayer structure “Cantilever-Masonry beam.” Support work load is affected by the position, thickness, and hardness of KSIR. The support work load increased on the condition of increase of the thickness and hardness of KSIR and the decrease of the distance to the face. |
| format | Article |
| id | doaj-art-61548493f042454aa62e6eefaf17fa59 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-61548493f042454aa62e6eefaf17fa592025-02-03T01:10:59ZengWileyShock and Vibration1070-96221875-92032015-01-01201510.1155/2015/657818657818Dynamic Effect and Control of Key Strata Break of Immediate Roof in Fully Mechanized Mining with Large Mining HeightYuan Yong0Tu Shihao1Zhang Xiaogang2Li Bo3School of Mines, China University of Mining and Technology, Key Laboratory of Deep Coal Resource Mining, Ministry of Education, China-Australian Mining Research Center, Xuzhou, Jiangsu 221116, ChinaSchool of Mines, China University of Mining and Technology, Key Laboratory of Deep Coal Resource Mining, Ministry of Education, China-Australian Mining Research Center, Xuzhou, Jiangsu 221116, ChinaSchool of Mines, China University of Mining and Technology, Key Laboratory of Deep Coal Resource Mining, Ministry of Education, China-Australian Mining Research Center, Xuzhou, Jiangsu 221116, ChinaSchool of Mines, China University of Mining and Technology, Key Laboratory of Deep Coal Resource Mining, Ministry of Education, China-Australian Mining Research Center, Xuzhou, Jiangsu 221116, ChinaThis paper puts forward the concept of key strata in immediate roof (KSIF) and studied the dynamic effect and control mechanism of KSIF. The results show that KSIR controls the caving of its upper immediate roof strata; the break of KSIR has direct dynamic impact on its lower strata and this impact increases along with the increase of the thickness and hardness of the KSIR and the decrease of the distance to the working seam. The KSIR and main roof can easily form the bilayer structure “Cantilever-Masonry beam.” Support work load is affected by the position, thickness, and hardness of KSIR. The support work load increased on the condition of increase of the thickness and hardness of KSIR and the decrease of the distance to the face.http://dx.doi.org/10.1155/2015/657818 |
| spellingShingle | Yuan Yong Tu Shihao Zhang Xiaogang Li Bo Dynamic Effect and Control of Key Strata Break of Immediate Roof in Fully Mechanized Mining with Large Mining Height Shock and Vibration |
| title | Dynamic Effect and Control of Key Strata Break of Immediate Roof in Fully Mechanized Mining with Large Mining Height |
| title_full | Dynamic Effect and Control of Key Strata Break of Immediate Roof in Fully Mechanized Mining with Large Mining Height |
| title_fullStr | Dynamic Effect and Control of Key Strata Break of Immediate Roof in Fully Mechanized Mining with Large Mining Height |
| title_full_unstemmed | Dynamic Effect and Control of Key Strata Break of Immediate Roof in Fully Mechanized Mining with Large Mining Height |
| title_short | Dynamic Effect and Control of Key Strata Break of Immediate Roof in Fully Mechanized Mining with Large Mining Height |
| title_sort | dynamic effect and control of key strata break of immediate roof in fully mechanized mining with large mining height |
| url | http://dx.doi.org/10.1155/2015/657818 |
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