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Assessment of wear of diamond core drilling bits

机译：评估金刚石芯钻头的磨损

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The paper issues from a laboratory research of small-diameter rotary drilling of rocks, which belongs to fundamental means of mechanical rock breaking. Presented results were acquired during extensive experimental research, which was performed at the Institute of Geotechnics SAS, using the laboratory drilling rig with diamond core drilling bits of 46 mm diameter with a view to assess the effect of drill bit wear on their ability to provide appropriate operational parameters in drilling of exploratory boreholes. Changes in drilling speed and energy consumption were observed while keeping different operational parameters (thrust force, revolutions) and the relation between the wear intensity and specific drilling energy was expressed. The experiments were performed while keeping the input parameters constant (i.e. constant regime) and during regime changes.
机译：本文来自于小直径岩石旋转钻探的实验室研究，属于机械破岩的基本手段。在广泛的实验研究中获得了呈现的结果，该研究是在地质工程学院SAS进行的，使用的是带有46毫米直径金刚石芯钻头的实验室钻机，目的是评估钻头磨损对其提供合适钻头能力的影响。探索性钻孔的操作参数。在保持不同的操作参数（推力，转数）的同时，观察到钻速和能耗的变化，并表达了磨损强度与比钻进能量之间的关系。在保持输入参数恒定（即恒定状态）的同时以及在状态变化期间进行实验。

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