降低爆破大块率是岩石爆破开挖和矿岩凿岩爆破中的一个重要课题。
How to lower the blasted Boulder yield is an important problem in rock's blasting excavation and ore's drilling blasting.
调查表明，岩性变差与凿岩爆破工艺不合理是采场跨塌的主要诱因。
The investigation showed that the bad rock and unreasonable drilling and blasting were the main inducing factor of stope collapse.
在采矿试验中，通过采用优化选择的凿岩爆破参数，取得了良好的效果。
Through the adoption of optimized parameters, good blasting results were achieved in the mining experiment.
在掘进工作面上实现凿岩台车钻臂的准确定位是提高凿岩爆破效果的重要环节。
The implementation of accurate boom location of drilling Jumbo at the driving place is a key link to improve the drilling-blasting effects.
岩石可钻性和可爆性研究是凿岩爆破领域的基础性课题，同时也具有重要的实际意义。
The study of Rock drillability and blastibility is a basic topic in the fields of drilling and blasting, it has important practical meaning also.
该项包括那些拥有和经营自己企业的承包商，涉及的范围有挖掘，分级，铺砌，凿岩爆破这些方面。
This unit group includes excavating, grading, paving, drilling and blasting contractors who own and operate their own business.
介绍了该矿传统掘进凿岩爆破方法，详细阐述了该矿硬韧性岩的巷道掘进炮眼布设及装药系数的确定。
The blasting hole arrangement of hard ductility rocks in the roadway excavation is discussed and explosive loading coefficient is determined.
大红山铜矿地下中深孔采矿中，采用系列爆破漏斗试验方法确定中深孔采矿凿岩爆破参数，取得了较好的效果。
Serial blasting crater test method was used in underground medium and deep hole mining of Dahongshan copper mine for determining drilling and blasting parameters, and good results were obtained.
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。
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.
降低深孔爆破落矿大块率是矿山凿岩中的一个重要课题。
To lower blasted boulder yield is one of the most important technical considerations in deep-hole blasting operations of mine.
石方开挖施工要点：采用潜孔钻机配以凿岩机钻眼，松动控制爆破和边坡成型光面爆破。
Elements of stonework excavation: Use down-hole drill assisted with hammer drill drilling. Control blasting loosely and side slope molding smoothing wall blasting.
主要用于道路建设、土石方开挖及露天开采，水利工程爆破孔、预烈孔的凿岩工序，是理想的高效穿凿设备。
Mainly used in roadway construction, excavation rock and soil volume, opencast working, blom up holes of explosion & pre-intensity, for water conservancy projects.
CTQ - Z 120y型履带式液压钻机主要适用于露天矿山开采，水利，电站，筑路等石方爆破孔凿岩。
CTQ-Z120Y Crawler hydraulic drilling rig is mainly suitable for rock blasting hole drilling in open mining, water conservancy, power plants, roads ect.
CTQ - Z 120y型履带式液压钻机主要适用于露天矿山开采，水利，电站，筑路等石方爆破孔凿岩。
CTQ-Z120Y Crawler hydraulic drilling rig is mainly suitable for rock blasting hole drilling in open mining, water conservancy, power plants, roads ect.
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