论文部分内容阅读
大直径角锥掏槽爆破,是一个先进经验,根据我矿试验结果,效果非常良好。现在总结一点初步体会,供各矿参考。无疑,这一经验必须继续研究,以便推广。大直径角锥掏槽炮眼排列及技术特征(一)炮眼基本排列法它的特点如下:1.虽然掏心眼直径较大,但打一个眼相当于打普通眼的1.5倍,能在一定的工作时间内多打掌子,提高工班效率。经多次试验证明,在Ⅲ级岩石中打一个掌用2.5小时(纯凿岩时间100分钟),如果操作快些一个工作班能打三个掌子。2.使用特制的大直径药包,提高装药密度。火药集中眼底,三个大眼齐发爆破,这样能克服较强的
Large-diameter pyramid cut blasting is an advanced experience, according to my mine test results, the effect is very good. Now sum up a little preliminary experience, for all mine reference. Undoubtedly, this experience must continue to be studied in order to promote it. Large diameter pyramid Cutter hole arrangement and technical characteristics (A) The basic arrangement of the hole method Its characteristics are as follows: 1. Although dig the eye diameter larger, but playing one eye is equivalent to playing 1.5 times the normal eye, can work in a certain More time to hit the palm, improve work efficiency. After several tests proved that in a Ⅲ grade rock hit a palm with 2.5 hours (pure rock drilling time of 100 minutes), if the faster operation of a working class can play three fingers. 2. Use a special large diameter kits to improve the charge density. Concentration gunpowder eyes, three big eyes blow together, so that we can overcome the stronger