深孔梯段爆破开采筑坝石料

Exploiting Dam Rocks by Wide-spacing Deephole Bench Blasting

深孔爆破采用合理的布孔方式 ,使炸药爆炸能量得以充分发挥 ,破碎率提高 ,大块度降低 ,从而获得较理想的堆石坝石料。本文着重介绍深孔梯段爆破的布孔原则 ,以及在几个水利水电工程中的应用情况。

The reasonable hole pattern of deephole blasting was utilized to make fully use of the explosive energy, to improve the crushed ratio, to lower the boulder yield, and to obtain better dam rocks. The emphasis of this paper is put on the hole pattern principle of deephole bench blasting and its application in several conservancy and hydropower engineering.