钻探工程2025，Vol.52Issue(2)：87-97,11.DOI:10.12143/j.ztgc.2025.02.012
基于截齿切削试验的旋挖钻具布齿规律研究
Research on the pick arrangement pattern of rotary drilling barrel based on pick cutting test
摘要
Abstract
During the construction of rotary drilling rig,the efficiency of rock drilling is closely related to the pick arrangement of core barrel.The key pick arrangement parameters of core barrels are studied by using pick cutting test system.Three-dimensional load,crushing volume,deformation displacement,broken morphology and other data were collected during the test process.From multiple dimensions such as crushing specific power,cutting resistance,load fluctuation,and pick spin,the controlled variable method is applied to conduct pick cutting experiments,quantitatively evaluating the effects of cutting angle,drilling tooth deviation angle,cutting sequence,drilling tooth tip height difference,and drilling tooth tip trajectory spacing on rock cutting.Research has shown that there is an optimal combination of drilling tooth arrangement parameters that match the geological properties.Taking drilling into granite formations as an example,the optimal range of drilling tooth arrangement parameters was determined,which are:cutting angle 68°～72°,drilling tooth deviation angle 5°～15°,skip cutting,drilling tooth tip height difference of about 3mm,and drilling tooth tip trajectory spacing of about 30mm.According to the test results,the drilling efficiency is increased by 13.64%and the cost of unit footage is reduced by 39.13%.The research results are of great significance for guiding the arrangement of the core barrels,reducing the drilling tooth loss and improving the drilling efficiency.关键词
旋挖钻机/岩石切削/截齿筒钻/钻具布齿Key words
rotary drilling rig/rock cutting/pick tooth barrel drilling/pick arrangement of core barrel分类
机械制造引用本文复制引用
马宁,谢志勇,肖丹桂..基于截齿切削试验的旋挖钻具布齿规律研究[J].钻探工程,2025,52(2):87-97,11.基金项目
自然资源部深部地质钻探技术重点实验室2021年度开放课题基金项目"旋转切削入岩加压力和扭矩匹配研究"(编号:KF202102) （编号:KF202102）
