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| Study on slope stability of large deep concave open-pit mine and application of intelligent monitoring system |
| Received:April 08, 2022 Revised:April 14, 2022 |
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| DOI： |
| KeyWord:geological hazards; deep open-pit mine; slope stability; numerical simulation；partition simulation; FLAC3D；3D visualization of slopes; slope monitoring |
| Author | Institution |
| ZHU Jipeng |
1.栾川龙宇钼业有限公司 |
| SU Huaibin |
1.栾川龙宇钼业有限公司 |
| ZHAO Xuyang |
1.栾川龙宇钼业有限公司 |
| SUN Yanyan |
1.栾川龙宇钼业有限公司 |
| WU Hao |
1.栾川龙宇钼业有限公司 |
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| Abstract: |
| Geological disasters such as landslides, debris flows, and dangerous rock collapses are likely to occur during the mining of deep-pit open pit mines. To ensure the safety of personnel and equipment in the open pit, it is necessary to research on the slope stability of deep open-pit mines. Use 3DMine to build a 3D model of a deep open-pit mine, and then import it into FLAC3D to calculate the stress and strain values of the open-pit mine slope in 8 zones. From the analysis of vertical displacement, the maximum (small) principal stress distribution, and shear strain, it is concluded that there is almost no vertical displacement, and the overall stability of the open-air slope is strong; Strengthen monitoring,introduction of slope intelligent monitoring system in actual engineering, in which a three-dimensional visual slope model is formed by using radar scanning and GNSS online data integration technology to monitor the slope spatial displacement change data in real-time. The actual monitoring results show that the weak surface of the slope is displaced after mining, which is consistent with the numerical simulation results. The innovation of the article lies in the use of finite element numerical simulation software to establish a three-dimensional open-pit mine overall model for slope stability research. Combined with the three-dimensional intelligent management and control system in actual engineering to monitor tall and large slopes, it can effectively prevent the geological problems encountered in open-pit mining. It has a certain reference value for the research on the safety and stability of similar tall and large slopes. |
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