中深孔松动预裂爆破技术应用研究

Study on the application of medium deep hole pre splitting blasting technology

以云飞公司串草圪旦煤矿井田南部区域6#煤层为研究对象,针对其多年来坚硬煤体初采初放期间顶煤不易垮落的难题,通过中深孔松动预裂爆破技术,消除了煤体及顶板大面积垮落的隐患,大幅度提高了煤炭资源回收率。试验研究证明,仅以6103工作面回采实践估算,通过此项技术提前放顶煤可多回收煤炭约3万吨。

With the flying cloud company Chuancao Gedan coal mine in Southern Mining Area 6# coal seam as the research object, eliminate the coal seam and roof collapse hazards greatly improve the recovery rate of coal resources. Experiment results show that estimation of only 6103 working face mining practice, through the technique advance caving can be recovered about 30 thousand tons of coal.