Analysis of impact of mining in working face of Hebi No.9 Mine on the mining of auxiliary shaft
The auxiliary shaft of coal mine is an important channel for underground mining operation,carrying important functions such as personnel lifting,material transportation,and ventilation in the mine.The study of shaft stability in the mining of shaft protection coal pillars is very important.This paper took the mining of the working face inside the protective coal pillars in the new auxiliary shaft of Hebi No.9 Coal Mine as the research object,calculated the law of shaft movement and deformation by using the probability integral method,and on this basis,judged the damage of the rock strata in the whole shaft section by the Drucker-Prager criterion,so as to evalu-ate the impact of the mining plan on the mining of the new auxiliary shaft,provide a basis for the mining planning of the coal mine,and provide theoretical guidance for the mining of the protective coal pillars of the shaft under similar conditions.
mining influencevertical shaft failureprobability integral methodDrucker-Prager criterion
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