Field and Numerical Investigation on the Coal Pillar Instability of Gob-Side Entry in Gently Inclined Coal Seam
In order to study the coal pillar stability of gob-side entry in gently inclined coal seam, a comprehensive method including theoretical analysis, numerical modeling, and field monitoring was applied to study its fracturing and instability mechanism. The results show that the uneven horizontal stres...
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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: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/4901670 |
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| author | Xupeng Ta Zhijun Wan Yuan Zhang Peng Shi Zejie Wei Xin Sun Liangliang Jia |
| author_facet | Xupeng Ta Zhijun Wan Yuan Zhang Peng Shi Zejie Wei Xin Sun Liangliang Jia |
| author_sort | Xupeng Ta |
| collection | DOAJ |
| description | In order to study the coal pillar stability of gob-side entry in gently inclined coal seam, a comprehensive method including theoretical analysis, numerical modeling, and field monitoring was applied to study its fracturing and instability mechanism. The results show that the uneven horizontal stress was the internal cause of entry asymmetric deformation and failure in inclined coal seam. In gently inclined coal seam, the rotation movement of the main roof and stress distribution were closely related to inclination of the coal seam. Based on the asymmetric deformation characteristics and mechanisms of entry, a collaborative control technology of roof cutting for pressure relief and support strengthening has been put forward. The research results have practical significance for revealing the mechanism of entry damage in gently inclined coal seam mining and proposing engineering measures to prevent coal pillar damage and disaster occurrence. |
| format | Article |
| id | doaj-art-4c8770f9b98a49f5878488a7d52c1604 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-4c8770f9b98a49f5878488a7d52c16042025-02-03T06:10:45ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/49016704901670Field and Numerical Investigation on the Coal Pillar Instability of Gob-Side Entry in Gently Inclined Coal SeamXupeng Ta0Zhijun Wan1Yuan Zhang2Peng Shi3Zejie Wei4Xin Sun5Liangliang Jia6Key Laboratory of Deep Coal Resource Mining (China University of Mining & Technology), Ministry of Education of China, Xuzhou 221116, ChinaKey Laboratory of Deep Coal Resource Mining (China University of Mining & Technology), Ministry of Education of China, Xuzhou 221116, ChinaKey Laboratory of Deep Coal Resource Mining (China University of Mining & Technology), Ministry of Education of China, Xuzhou 221116, ChinaKey Laboratory of Deep Coal Resource Mining (China University of Mining & Technology), Ministry of Education of China, Xuzhou 221116, ChinaKey Laboratory of Deep Coal Resource Mining (China University of Mining & Technology), Ministry of Education of China, Xuzhou 221116, ChinaKey Laboratory of Deep Coal Resource Mining (China University of Mining & Technology), Ministry of Education of China, Xuzhou 221116, ChinaChensilou Coal Mine, Henan Energy Chemical Group Yongmei Company, Yongcheng 476600, ChinaIn order to study the coal pillar stability of gob-side entry in gently inclined coal seam, a comprehensive method including theoretical analysis, numerical modeling, and field monitoring was applied to study its fracturing and instability mechanism. The results show that the uneven horizontal stress was the internal cause of entry asymmetric deformation and failure in inclined coal seam. In gently inclined coal seam, the rotation movement of the main roof and stress distribution were closely related to inclination of the coal seam. Based on the asymmetric deformation characteristics and mechanisms of entry, a collaborative control technology of roof cutting for pressure relief and support strengthening has been put forward. The research results have practical significance for revealing the mechanism of entry damage in gently inclined coal seam mining and proposing engineering measures to prevent coal pillar damage and disaster occurrence.http://dx.doi.org/10.1155/2021/4901670 |
| spellingShingle | Xupeng Ta Zhijun Wan Yuan Zhang Peng Shi Zejie Wei Xin Sun Liangliang Jia Field and Numerical Investigation on the Coal Pillar Instability of Gob-Side Entry in Gently Inclined Coal Seam Advances in Civil Engineering |
| title | Field and Numerical Investigation on the Coal Pillar Instability of Gob-Side Entry in Gently Inclined Coal Seam |
| title_full | Field and Numerical Investigation on the Coal Pillar Instability of Gob-Side Entry in Gently Inclined Coal Seam |
| title_fullStr | Field and Numerical Investigation on the Coal Pillar Instability of Gob-Side Entry in Gently Inclined Coal Seam |
| title_full_unstemmed | Field and Numerical Investigation on the Coal Pillar Instability of Gob-Side Entry in Gently Inclined Coal Seam |
| title_short | Field and Numerical Investigation on the Coal Pillar Instability of Gob-Side Entry in Gently Inclined Coal Seam |
| title_sort | field and numerical investigation on the coal pillar instability of gob side entry in gently inclined coal seam |
| url | http://dx.doi.org/10.1155/2021/4901670 |
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