|
| Study on safe mining scheme of shallow buried large and residual ore body |
|
Received:May 02, 2018
Revised:May 17, 2018
Accepted:May 18, 2018
Published Online:June 26, 2019
|
| View Full Text View/Add Comment Download reader |
| DOI： |
| KeyWord:Shallow;buried, Empty;field method, Numerical;simulation, Thick;ore body |
| Author | Institution |
| JIAO Mandai |
Northwest Institute of Mining and Metallurgy,Baiying,Gansu |
| LIU Tao |
Northwest Institute of Mining and Metallurgy,Baiying,Gansu |
|
| Hits: 2631 |
| Download times: 1522 |
| Abstract: |
| In order to safely and effectively recover the large residual shallow ore body, the RMR score of ore rock and surrounding rock is investigated through the investigation and quality evaluation of the rock mass in the ore body area. Rock mechanics tests were carried out on the main rock mechanics parameters. According to the spatial characteristics of residual orebodies, through the program technology and economic comparison, it is determined that the vertical pillar pillars method is adopted as the mining scheme. The simulation results show that the maximum displacement at the top of the mined bar is 2.36cm after the end of mining, and the sequence of the recovery of the two pillars is simulated and compared with the simulation results to finalize After the pillars were recovered, the maximum displacement in Z direction of the roof of the empty area reached 3.9cm. |
| Close |
|
|
|