Impact of Underground Mining on Shaft Lining and Aquifer in Eastern China
- 1 Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University, Fukuoka, Japan
- 2 Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University, Fukuoka, Japan
- 3 Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University, Fukuoka, Japan
- 4 Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University, Fukuoka, Japan
Abstract
Serious shaft lining ruptures have often occurred in the eastern part of China since 1987 due to the complicated geological conditions. This paper tries to find out the relationship between mechanisms of shaft lining rupture and the underground mining process. The analysis is based on the existence typical engineering and geological conditions in eastern China; the impact of underground mining on the shaft lining and aquifer layer is analyzed by using numerical method. The impact factors such as different depths, thicknesses, mining widths of coal seam and different distances to the shaft are used in the analysis. The mining area under the aquifer which near the shaft lining has a significant impact on the shaft lining due to mining process, and increases the risk of occurrence of shaft lining rupture.
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