Abstract
Taking Baorixile open-pit coal mine as an example, the regional hydrogeological conditions and the mining area hydrogeological conditions are briefly introduced. Analyzing the factors influencing the stability of open pit dump, discussing the classification and proportion of influencing factors, the numerical simulation of the influence of surface water and seismic vibrations on the stability of open-pit dump is carried out. Results show: Surface water is an important factor affecting the stability of open-pit dump, extremely sensitive to the safety factor, the influence of slope instability is similar to that of intensity 6 earthquake. The weight coefficient of surface water to slope stability is in the range of 0.4 to 0.9.
Highlights
The effects of atmospheric precipitation and surface water on the stability of open-pit are very large
Serious geological disasters occurred in China during the period of 7-9 months of flood season, this shows that most of the geological disasters are closely related to atmospheric rainfall
In order to more intuitively explain the impact of rainfall on slope stability, the safety factor of the dump will be compared under the condition of 6 degree seismic intensity, because seismic damage is a natural disaster that can't be predicted by human beings which is a representative event
Summary
The effects of atmospheric precipitation and surface water on the stability of open-pit are very large. From here we see that the effect of water on slope stability is very large, sometimes even disastrous. It is very difficult to predict slope stability accurately, because of the geological conditions, rock mass mechanical properties, environmental factors and so on, it has the characteristics of uncertainty and fuzziness. Combine with the actual situation and historical data of Baorixile open-pit mine dump, analysis the weight coefficient of the influence of surface water on the stability of dump. In order to more intuitively explain the impact of rainfall on slope stability, the safety factor of the dump will be compared under the condition of 6 degree seismic intensity, because seismic damage is a natural disaster that can't be predicted by human beings which is a representative event
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