In-situ Measurements of Cutter Forces on Boring Machine at Äspö Hard Rock Laboratory Part II. Characteristics of Cutter Forces and Examination of Cracks Generated
In-situ Measurements of Cutter Forces on Boring Machine at Äspö Hard Rock Laboratory Part II. Characteristics of Cutter Forces and Examination of Cracks Generated
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DOI：
10.1007/s00603-002-0037-x
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发表时间：
2003
影响因子：
6.2
通讯作者：
Z. X. Zhang;S. Kou;P. Lindqvist
中科院分区：
文献类型：
--
作者：
Z. X. Zhang;S. Kou;P. Lindqvist
采用频谱分析的方法，对硬岩实验室钻床上两个纽扣刀具所受的法向力、切向力和侧向力进行了测量分析，确定了切削力的基本特征。在切削力测量后，从试验井的井底和井壁采集了岩心样品。这些样品被切割、抛光，并通过扫描电子显微镜(SEM)进行检查。测量了岩样中主裂纹的长度，并研究了中位裂纹长度与切削力的关系。
By means of spectral analysis, the measured normal forces, tangential forces, and side forces acting on two button cutters on the boring machine in Äspö Hard Rock Laboratory were analysed and the basic characteristics of the cutter forces were determined. After the measurements of the cutter forces, some rock core samples were taken from the bottom and the wall of the test borehole. These samples were cut, polished, and examined by means of a Scanning Electron Microscope (SEM). The lengths of the major cracks in the rock samples were measured, and a relation between the length of the median cracks and the relevant cutter forces was investigated.