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钻凿爆破孔的精度直接影响爆破效果,如果钻凿爆破孔的精度太低,必然造成爆破孔分布不均或定位不准确,导致爆破后隧道超挖、欠挖、隧道轮廓不规则,甚至造成局部塌方等。爆破孔精度的衡量参数主要包括爆破孔的定位精度、爆破孔平直度、爆破孔的孔径和爆破孔的深度等。本文介绍凿岩台车作业时,影响钻凿孔精度的因素,并提出提高钻凿孔精度的方法。
Drilling blasting hole accuracy directly affects the blasting effect, if the drilling blasting hole accuracy is too low, inevitably lead to uneven distribution of blasting holes or positioning is not accurate, resulting in tunnel after excavation over-excavation, digging, irregular tunnel profile, and even caused Local landslides and so on. Blasting hole accuracy measurement parameters include blasting hole positioning accuracy, blasting hole straightness, blasting hole diameter and blasting hole depth. This paper introduces the factors affecting the accuracy of drilling holes when drilling rigs work, and puts forward some methods to improve the precision of drilling holes.