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| Research on Ground Pressure Activity Law of Deep Mining in a Copper Mine Based on FLAC3D |
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Received:June 26, 2018
Revised:July 23, 2018
Accepted:July 26, 2018
Published Online:August 26, 2019
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| DOI： |
| KeyWord:FLAC3D; Deep mining; Ground pressure activity; Fault |
| Author | Institution |
| WANG Yueqing |
Engineering Institute of Land and Resources,Kunming University of Science and Technology |
| HOU Kepeng |
Engineering Institute of Land and Resources,Kunming University of Science and Technology |
| SHANG Xiaoguang |
Engineering Institute of Land and Resources,Kunming University of Science and Technology |
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| Abstract: |
| The article introduces the important influence of the law of ground pressure on the deep mining of the mine. Through the application of FLAC3D software to numerical simulation calculation of two working conditions in the mining process of a copper mine 59# ore body, it is found that the 59# ore body is mined to ten. In the middle of the fifth section, the disturbance to the surrounding rock is small, and there will be no large-scale collapse of the roof; mining has the greatest impact on the stability of the 3# goaf, and has the least impact on the stability of the 2# goaf; The stability of the empty area has a certain effect, but the effect is not great. With the increasing depth of the mining of the 59# ore body, the degree of influence on the fault is gradually increased; the waste rock filling has little effect on the stability of the fault. It is concluded that as the mining depth increases, the disturbance to the surrounding rock becomes larger and larger, the stability of the surrounding rock decreases, and the roof is likely to fall suddenly. Once the roof suddenly falls, there will be a loud noise in the well. Vibration, but because the copper mine is mined by caving, there is a large amount of overburden rock in the upper part of the stope, and the roof suddenly rises and does not form impact pressure. |
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