提高爆破作业的安全性和效果

To Improve the Safety and Effect of Blasting

煤矿采掘和地面爆破施工中，爆破可靠性是个重要环节。发生在网路中的不规则拒爆，可以认为是由雷管敏感度差异而造成，钝感的雷管因未获得足够的电冲能而拒爆，自在情理之中。然而，发生在串联网路中部的成组拒爆，或者只有一端爆炸的情况，就难以用敏感度差异来解释。本文介绍了有关这方面内容的实验研究工作，揭示了网路上电气参数的变化规律，分析了发生成组拒爆的原因和条件。

The reliability of blasting is an important linkin the excavation of coal mines and in the construction ofsurface blasting. Irregular miss-fire in the networks re-sultes from the difference of susceptibility of detonators.Ithappens naturally when inactive detonators accept no e-nough electric impact energy.However it is difficult to ex-plain by the difference of susceptibility of detonators whenmultiple-hole miss-fire happens in the middle of series net-work or blasting happens only at one side. The concernedtest and research are introduced to reveal the changes ofelectric parameters. The causes and conditions of multiple-hole miss-fire are also analyed.