Multi-Factor Analysis on the Stability of High Slopes in Open-Pit Mines
During the production of open-pit mines, the stability of slopes can be affected by various factors such as structural surfaces, production blasting vibrations, and mining areas. In this study, the researchers focused on the slope of the open-pit mine at Yinshan and employed UAV mapping technology t...
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| Format: | Article |
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MDPI AG
2023-05-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/10/5940 |
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| author | Hui Cao Gaotong Ma Peng Liu Xiushan Qin Chunping Wu Jin Lu |
| author_facet | Hui Cao Gaotong Ma Peng Liu Xiushan Qin Chunping Wu Jin Lu |
| author_sort | Hui Cao |
| collection | DOAJ |
| description | During the production of open-pit mines, the stability of slopes can be affected by various factors such as structural surfaces, production blasting vibrations, and mining areas. In this study, the researchers focused on the slope of the open-pit mine at Yinshan and employed UAV mapping technology to conduct an on-site geological engineering investigation. Information on the yield, trace length, spacing, and density of the structural surface of the south slope was obtained. The researchers also carried out vibration blasting tests in combination with the production blasting activities in the mine to determine the blasting vibration attenuation law and whether the blasting vibration speed met safety specifications. Additionally, numerical simulation methods were used to examine the influence of the mining area on the stability of the current slope and the designed excavation slope. The slope stability was evaluated using the limit equilibrium method, and the researchers separately discussed the influence of self-weight load and self-weight load plus blasting vibration force on the stability of the high slope of the open pit. The results showed the following: (1) The rock mass structural plane in the south slope of the mining area was mainly dominated by a medium-large dip structural plane, and three faults and joint fissures in the investigation area combined to form cutting and sliding surfaces in the rock mass that were prone to collapse and sliding. (2) The maximum blasting vibration speed met safety requirements. (3) There was no large range of plastic zone damage in the entire slope, and the overall stability of the slope was good. (4) The present slope was relatively stable when considering only self-weight stress and the blasting vibration force. However, there was a certain risk of instability in the design of the excavation slope. |
| first_indexed | 2024-03-11T03:58:52Z |
| format | Article |
| id | doaj.art-a4a501a56ef44bff9ce3a9d2dfb6f467 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T03:58:52Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-a4a501a56ef44bff9ce3a9d2dfb6f4672023-11-18T00:18:05ZengMDPI AGApplied Sciences2076-34172023-05-011310594010.3390/app13105940Multi-Factor Analysis on the Stability of High Slopes in Open-Pit MinesHui Cao0Gaotong Ma1Peng Liu2Xiushan Qin3Chunping Wu4Jin Lu5School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Beijing 100083, ChinaBGRIMM Technology Group, Beijing 100160, ChinaSchool of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaDuring the production of open-pit mines, the stability of slopes can be affected by various factors such as structural surfaces, production blasting vibrations, and mining areas. In this study, the researchers focused on the slope of the open-pit mine at Yinshan and employed UAV mapping technology to conduct an on-site geological engineering investigation. Information on the yield, trace length, spacing, and density of the structural surface of the south slope was obtained. The researchers also carried out vibration blasting tests in combination with the production blasting activities in the mine to determine the blasting vibration attenuation law and whether the blasting vibration speed met safety specifications. Additionally, numerical simulation methods were used to examine the influence of the mining area on the stability of the current slope and the designed excavation slope. The slope stability was evaluated using the limit equilibrium method, and the researchers separately discussed the influence of self-weight load and self-weight load plus blasting vibration force on the stability of the high slope of the open pit. The results showed the following: (1) The rock mass structural plane in the south slope of the mining area was mainly dominated by a medium-large dip structural plane, and three faults and joint fissures in the investigation area combined to form cutting and sliding surfaces in the rock mass that were prone to collapse and sliding. (2) The maximum blasting vibration speed met safety requirements. (3) There was no large range of plastic zone damage in the entire slope, and the overall stability of the slope was good. (4) The present slope was relatively stable when considering only self-weight stress and the blasting vibration force. However, there was a certain risk of instability in the design of the excavation slope.https://www.mdpi.com/2076-3417/13/10/5940open-pit mineslope stability analysisdrone geological surveyattenuation law of blasting vibrationgoaf area |
| spellingShingle | Hui Cao Gaotong Ma Peng Liu Xiushan Qin Chunping Wu Jin Lu Multi-Factor Analysis on the Stability of High Slopes in Open-Pit Mines Applied Sciences open-pit mine slope stability analysis drone geological survey attenuation law of blasting vibration goaf area |
| title | Multi-Factor Analysis on the Stability of High Slopes in Open-Pit Mines |
| title_full | Multi-Factor Analysis on the Stability of High Slopes in Open-Pit Mines |
| title_fullStr | Multi-Factor Analysis on the Stability of High Slopes in Open-Pit Mines |
| title_full_unstemmed | Multi-Factor Analysis on the Stability of High Slopes in Open-Pit Mines |
| title_short | Multi-Factor Analysis on the Stability of High Slopes in Open-Pit Mines |
| title_sort | multi factor analysis on the stability of high slopes in open pit mines |
| topic | open-pit mine slope stability analysis drone geological survey attenuation law of blasting vibration goaf area |
| url | https://www.mdpi.com/2076-3417/13/10/5940 |
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