炮采面提高块煤率的爆破技术研究

The blasting technique research of improving the lump coal rate in the big gun adopts the surface

在炮采工作面中,为提高块煤率,对小直径药卷倾斜孔微差爆破技术参数进行了理论分析和现场小规模爆破试验。实践证明,这种技术可以明显提高块煤率,提高产量,增加施工的安全,具有较好的经济和社会效益。

In order to improve the lump coal rate in the big gun adopts the surface, through four blasting scheme comparison, select split-second delay blasting scheme of slope hole of minor diameter medicine finally, and carry on theory analysis to its parameter and test on a small scale. Practice has proved that this kind of technology can obviously improve the lump coal rate, increase the security of constructing, have better economic and social benefits.