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| Stability Monitoring and Numerical Analysis of High and Steep Slope with Broken Bedding Rock under Blasting Disturbance |
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Received:October 31, 2022
Revised:November 23, 2022
Accepted:December 07, 2022
Published Online:June 25, 2023
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| DOI： |
| KeyWord:Tailings pond slope;Mechanical test;numerical simulation;geological conditions;Slope safety factor |
| Author | Institution |
| CHEN Xi |
The fourth Geological Exploration Institute of Henan Geology and Mineral Resources Exploration and Development Bureau,Zhengzhou,Henan Province,#$NBS |
| ZHANG Ningxiao |
The fourth Geological Exploration Institute of Henan Geology and Mineral Resources Exploration and Development Bureau,Zhengzhou,Henan Province,#$NBS |
| LIN Zhiyong |
Fujian Institute of Engineering,Fuzhou City,Fujian Province |
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| Abstract: |
| High steep bedding rock slope has always been an important research content for domestic and foreign scholars. Whether the high steep bedding rock slope is stable is of great significance for the safety construction of open pit mines. Therefore, this paper studies the stability of the bedding rock slope at the end of an open pit mine, aiming to analyze the stability of the bedding rock slope in the bedding mine under blasting disturbance. Through indoor rock mechanics test, blasting vibration monitoring method and numerical analysis method, this paper conducts a comprehensive study on the disturbance of the bedding rock slope under the two blasting conditions of the mine. The research results show that under the two blasting conditions, the displacement at the structural plane of the bedding slope shows a trend of increasing gradually from top to bottom, and when it exceeds half of the structural plane, the displacement increases significantly, and when the main blasting area is blasted, the safety factor of the slope under blasting disturbance is 1.66; When presplitting blasting, the safety factor of the slope is 1.61. It shows that the closer to the structural plane of bedding slope, the more sensitive the slope stability is to the impact of blasting, and the slope stability has been affected by frequent blasting disturbance in the main blasting area. Therefore, the closer to the structural plane, the more the presplitting blasting initiation is, the lower the slope stability will be. However, according to the calculation results of the safety factor, the slope is stable under different blasting conditions. This research provides valuable theoretical basis for the design of the mine, and provides reliable guidance for the design and production of the mine in the future.. |
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