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| Study on structural parameter optimization of cutting the top in deep mining |
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Received:June 19, 2021
Revised:June 22, 2021
Accepted:June 23, 2021
Published Online:April 27, 2022
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| DOI： |
| KeyWord:Bench open stoping; Drilling chamber; Pillar; Structural parameters; Numerical analysis |
| Author | Institution |
| TianMeng |
Kunming University of Science and Technology |
| LiGuangtao |
Kunming University of Science and Technology |
| ZhangXi |
yuxikuangyeyouxiangongsi |
| WangJun |
Kunming University of Science and Technology |
| YangTianyu |
Kunming University of Science and Technology |
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| Abstract: |
| In the deep high stage open stope with subsequent filling in Dahongshan Copper Mine, this paper takes the stability of rock cutting and drilling chambers at the top of stope as the research object, and preliminarily determines the reasonable structural dimensions of chambers and pillars by using the area load theory of pillars, and analyzes the stability of the designed structural parameters by using FLAC3D.The results show that the width of the column should be designed as 4.5m when the width of the roof cutting and drilling chamber is 3.5m. The arrangement of simultaneous cutting groove and roof cutting coupling has a great influence on the stability of the drilling chamber. It is suggested to arrange the cutting groove at the end of the length direction of the chamber and the roof cutting coupling at the end of the width direction of the chamber. The roof cutting and rock drilling chamber designed according to the research results in Dahongshan copper mine can meet the requirements of safe operation in the process of service room mining. |
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