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直進式鑿岩经过我们一年来的推广,已經取得显著的成績,不但提高了掘進效率,也增加了掘进进度。但是在推廣中还存在一些問題,如眼深沒有發展到2m以上,炮眼的排列没有得出一定结论,爆破效率比沒有稳定在90％以上。這些問題是值得研究的。本文介紹了一些利用直進式鑿岩的實際經驗,雖然在設備條件上有些不同,但是有几點是值得我們注意的: (1)直进式鑿岩的炮眼排列方式很多,但主要应简单而有效地构成一定的最初掏心體形。 (2)中心眼的间隔与装药量的適當,是發挥爆破效率的主要条件。 (3)以小眼代替大眼的方法,在現有條件下可以進行試驗。
Straight-through rock drilling has achieved remarkable results through our promotion in the past year, which not only improves tunneling efficiency but also increases tunneling progress. However, there are still some problems in popularization. For example, if the depth of eye does not develop to more than 2m, the arrangement of the holes does not reach a certain conclusion. The efficiency of blasting is not stable at more than 90%. These problems are worth studying. This article describes some of the practical experiences with straight-ahead rock drilling. Although there are some differences in equipment conditions, there are a few points that deserve our attention: (1) There are many ways of directing rock drilling, but the main ones should be simple Effectively constitute a certain initial dig heart shape. (2) The center of the eye interval and the amount of charge appropriate, is to play a major blasting efficiency conditions. (3) The method of replacing the big eyes with the small eyes can be tested under the existing conditions.