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1·In addition, our experiments also indicate that the best depth of blast hole is close to shaft radius.

此外，试验还表明最佳的炮孔深度接近于井筒的半径。

2·May operate air-track, rotary, down-the-hole or other drilling machines to drill blast holes or may direct drilling of blast holes.

操作空气运作轨道，旋转，向下钻孔机或其他钻探机钻爆破洞或直接钻爆破洞。

3·The temperature gradient in blast hole was also measured and the temperature gradient was relative to the blast hole depth and its tem...

同时，还进行了炮孔孔内温度梯度的测量，它与炮孔深度及其温度有关。

4·The mechanic affection on the blast hole walls is simply analysed and cracking propagation caused by shaped charge is explained in this paper.

简单分析了聚能爆破装药在孔内爆破的力学效应，阐明了聚能爆破对岩石定向破裂的控制机理。

5·The temperature gradient in blast hole was also measured and the temperature gradient was relative to the blast hole depth and its temperature.

同时，还进行了炮孔孔内温度梯度的测量，它与炮孔深度及其温度有关。

6·This paper describes the theory, features and testing results of the air reverse circulation drilling process used in geo physical blast hole drilling.

概述了空气反循环钻进工艺应用于物探爆破孔施工的原理、特点及其试验应用情况。

7·The quantity of explosives and the blast-hole spacing are dependent upon the type and structure of the rock and the diameter and depth of the blast holes.

用药量和炮眼间距取决于岩石的范例和布局以及炮眼的直径和深度。

8·The paper introduces the rock blasting technology and 3 kinds of blast hole distribution suitable to different rock, and its remarkable application effect in practice.

文章介绍了针对不同矿岩条件进行的凿岩爆破工艺及3种典型布孔方法，并在实践中加以调整运用，取得了显著成效。

9·At present, in the design and construction of smooth blasting, considering few influence that main blast hole 'first blast damage to rock of smooth blasting parameters.

目前，在光面爆破设计与施工中，均未考虑主爆孔先爆造成光爆层岩石损伤对光面爆破参数的影响。

10·The optimum design method and basic principles of main reducer of rotary blast hole drill are discussed, The main reducer is taken as a whole and is optimized by discrete Complex method.

论述了牙轮钻机主机构减速器的优化设计方法和基本原理，以主机构减速器作为整体进行优化，采用离散复合形算法。