|
| FLAC3D numerical simulation of open-pit transformation to underground slope and stope stability |
| Received:September 06, 2020 Revised:September 14, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI： |
| KeyWord:open to underground；FLAC3D numerical simulation；slope height effect |
| Author | Institution |
| LI Qihang |
江西理工大学 资源与环境工程学院 |
| LI Xiaoshuang |
江西理工大学 资源与环境工程学院 |
| GENG Jiabo |
江西理工大学 资源与环境工程学院 |
| LUO Lang |
江西理工大学 资源与环境工程学院 |
|
| Hits: 1170 |
| Download times: 839 |
| Abstract: |
| This paper takes the typical gently inclined thin to medium thick phosphorus deposits around Jinning, Yunnan as the research object, and conducts coupling modeling based on software such as AutoCAD-ANSYS-FLAC3D, and establishes a single underground mining model with different mining depths of 200m and 300m and open-pit mining. Finally, when the slope is 45°, the open-pit mining model is converted to underground mining, and a numerical simulation test is carried out. The research results show that when the height of the slope is 200m, the slope rock mass and the overlying rock of the stope are overall stable during the entire process of converting from open pit to underground mining; when the slope height is 300m, the plastic zone on the side of the slope is connected, and the slope rock mass Bending and sinking damage will occur. Therefore, in consideration of comprehensive economy and safety, it is recommended to control the open-air slope height within 200m. Relevant research results can provide a certain technical reference value for underground mining projects in phosphate mines. |
| Close |
|
|
|