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针对直接硬厚顶板条件下无煤柱开采沿空留巷存在的问题,提出了利用深孔预裂爆破技术进行顶板控制的机理、方法以及配套支护技术研究,并成功实施工业性试验,有效的解决了直接硬厚顶板条件下无煤柱沿空留巷顶板控制的难题。研究成果有效的解决了矿井安全过程中的难题。
Aiming at the existing problems of coal pillar-free mining of gob-side entry under the conditions of direct hard and thick roof, this paper puts forward the mechanism, method and supporting support technology for roof control by using deep-hole presplitting blasting technology. The industrial experiment is successfully implemented and effective The solution to the problem of roof control of gob-side entry retaining with pillars under direct hard and thick roof conditions. The research results effectively solve the problems in the process of mine safety.