Study on influence of advanced deep-hole blasting pre-splitting roof on stability of gob side entry retaining
In order to smoothly implement gob-side entry retaining and mining without coal pillar in 3207 working face of Nanyang Coal Mine,Shanxi Province,this paper proposes to carry out advanced deep-hole blasting pre-splitting roof near gob side supporting wall.Through numerical simulation and field indust...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Emergency Management Press
2019-08-01
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| Series: | 矿业科学学报 |
| Subjects: | |
| Online Access: | http://kykxxb.cumtb.edu.cn/article/id/227 |
| _version_ | 1811308103966130176 |
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| author | Hu Tao Hou Gongyu Li Zixiang Li Zhuhe Xie Bingbing Chen Jianpeng Cui Yongke |
| author_facet | Hu Tao Hou Gongyu Li Zixiang Li Zhuhe Xie Bingbing Chen Jianpeng Cui Yongke |
| author_sort | Hu Tao |
| collection | DOAJ |
| description | In order to smoothly implement gob-side entry retaining and mining without coal pillar in 3207 working face of Nanyang Coal Mine,Shanxi Province,this paper proposes to carry out advanced deep-hole blasting pre-splitting roof near gob side supporting wall.Through numerical simulation and field industrial test,the influence of deep-hole blasting roof cutting on surrounding rock stability of gob-side retaining roadway is studied.Based on the backdrop of retaining roadway along goaf in 3207 working face of Nanyang coal mine,a numerical simulation model was established,the displacement of roof and floor,wall and coal body of retained roadway,the stress distribution and variation of surrounding rock of retaining roadway were calculated.The numerical calculation shows that the variation of stress and displacement of surrounding rock in gob-side retaining roadway decreases greatly after roof cutting,and the stability of surrounding rock is improved significantly.The field industrial test results show that deep-hole blasting roof cutting can effectively eliminate the rotational extrusion damage of cantilever beam roof to surrounding rock of gob-side retaining roadway,and help to maintain the stability and integrity of gob-side retaining roadway structure.The research results of this paper can be used for reference in the design and construction of gob-side entry retaining project. |
| first_indexed | 2024-04-13T09:17:10Z |
| format | Article |
| id | doaj.art-e684127b6e7b461daf494fe4ea0848f5 |
| institution | Directory Open Access Journal |
| issn | 2096-2193 |
| language | English |
| last_indexed | 2024-04-13T09:17:10Z |
| publishDate | 2019-08-01 |
| publisher | Emergency Management Press |
| record_format | Article |
| series | 矿业科学学报 |
| spelling | doaj.art-e684127b6e7b461daf494fe4ea0848f52022-12-22T02:52:43ZengEmergency Management Press矿业科学学报2096-21932019-08-014429930710.19606/j.cnki.jmst.2019.04.00320190403Study on influence of advanced deep-hole blasting pre-splitting roof on stability of gob side entry retainingHu Tao0Hou Gongyu1Li Zixiang2Li Zhuhe3Xie Bingbing4Chen Jianpeng5Cui Yongke6School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, ChinaChina Mine Science and Innovation(Beijing)Coal Technology Co., Ltd., Beijing 100083, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, ChinaNanyang Coal Mine, Ke Xing Groups of Gaoping County, Gaoping Shanxi 048440, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, ChinaIn order to smoothly implement gob-side entry retaining and mining without coal pillar in 3207 working face of Nanyang Coal Mine,Shanxi Province,this paper proposes to carry out advanced deep-hole blasting pre-splitting roof near gob side supporting wall.Through numerical simulation and field industrial test,the influence of deep-hole blasting roof cutting on surrounding rock stability of gob-side retaining roadway is studied.Based on the backdrop of retaining roadway along goaf in 3207 working face of Nanyang coal mine,a numerical simulation model was established,the displacement of roof and floor,wall and coal body of retained roadway,the stress distribution and variation of surrounding rock of retaining roadway were calculated.The numerical calculation shows that the variation of stress and displacement of surrounding rock in gob-side retaining roadway decreases greatly after roof cutting,and the stability of surrounding rock is improved significantly.The field industrial test results show that deep-hole blasting roof cutting can effectively eliminate the rotational extrusion damage of cantilever beam roof to surrounding rock of gob-side retaining roadway,and help to maintain the stability and integrity of gob-side retaining roadway structure.The research results of this paper can be used for reference in the design and construction of gob-side entry retaining project.http://kykxxb.cumtb.edu.cn/article/id/227deep hole blasting roof cuttinggob side entry retainingside supporting retaining wallnumerical simulation |
| spellingShingle | Hu Tao Hou Gongyu Li Zixiang Li Zhuhe Xie Bingbing Chen Jianpeng Cui Yongke Study on influence of advanced deep-hole blasting pre-splitting roof on stability of gob side entry retaining 矿业科学学报 deep hole blasting roof cutting gob side entry retaining side supporting retaining wall numerical simulation |
| title | Study on influence of advanced deep-hole blasting pre-splitting roof on stability of gob side entry retaining |
| title_full | Study on influence of advanced deep-hole blasting pre-splitting roof on stability of gob side entry retaining |
| title_fullStr | Study on influence of advanced deep-hole blasting pre-splitting roof on stability of gob side entry retaining |
| title_full_unstemmed | Study on influence of advanced deep-hole blasting pre-splitting roof on stability of gob side entry retaining |
| title_short | Study on influence of advanced deep-hole blasting pre-splitting roof on stability of gob side entry retaining |
| title_sort | study on influence of advanced deep hole blasting pre splitting roof on stability of gob side entry retaining |
| topic | deep hole blasting roof cutting gob side entry retaining side supporting retaining wall numerical simulation |
| url | http://kykxxb.cumtb.edu.cn/article/id/227 |
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