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刘家河5244综放工作面开切眼在试采过程中,顶板不易垮落,造成悬顶,瓦斯积聚,严重影响安全生产。通过采用超前预弱化顶板的方法对工作面顶板进行超松动,大幅减少了工作面悬顶、瓦斯积聚现象的发生,确保了工作面安全高效生产。
Liujiahe 5244 fully mechanized top coal caving face open cut In the trial mining process, the roof is not easy to collapse, resulting in suspended roof, gas accumulation, seriously affecting the safety in production. Through the use of advanced pre-weakening the roof of the roof over-loosening work, drastically reducing the work surface, the phenomenon of accumulation of gas to ensure safe and efficient production of face.