我矿是属于高沼气矿井,急倾斜煤层。井下二、四两个采煤区均采用仓储式采煤法。这种采煤法在放仓时,大煤块(或大矸块)堵塞溜煤眼问题经常出现。在特殊条件下,处理溜煤眼堵塞和处理较大矸块需要进行裸露爆破。但因这种爆破技术在安全上没有保证,从而使得一些矿井在迫于生产急需的情况下使用时发生灾害事故。例如渡口某 My mine is a high methane mine, steep seam. Underground two or four coal mining areas are using warehouse mining method. This coal mining method in the release of positions, the large block (or big block) block the problem of coal, often appear. Under special conditions, nuisance blasting is required to deal with the blocking of coal and the handling of larger blocks. However, there is no guarantee of safety due to such blasting technology, so that some mines will cause disasters when they are used urgently due to production needs. For example, a ferry