空气钻时快,压缩空气没有溶解粉末状岩屑的能力,故实际中返出岩屑均呈面粉状、细颗粒状,同时,由于钻时太快,在采集岩屑时很难保证每一包岩屑恰好对应该包的深度,这为现场岩屑描述带来很大的困难。如何能在空气钻中提高岩屑的剖面符合率是地质工作者的关键工作。 Air drilling fast, compressed air does not dissolve the ability of powdered debris, so the actual return of debris are floury, fine granular, and at the same time, due to drilling too fast, it is difficult to ensure the acquisition of debris every A package of cuttings corresponds exactly to the depth of the package, which presents great difficulties for on-site cuttings description. How to improve the consistency of cuttings in air drilling is a key task for geologists.