岩石钻掘过程中的钻头温度分析  

Temperature analysis of drill bit in rock drilling

作　　者：杨晓峰[1] 李晓红[1] 卢义玉[1] 

机构地区：[1]重庆大学西南资源开发及环境灾害控制工程教育部重点实验室,重庆400030

出　　处：《中南大学学报（自然科学版）》2011年第10期3164-3169,共6页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金委创新研究群体专项基金资助项目(50921063);重庆市杰出青年基金资助项目(CSTC2009BA6047);重庆大学研究生科技创新基金资助项目(201005B1A0010341)

摘　　要：为深入研究钻头钻掘岩石过程中的温度变化规律,通过对钻头钻掘岩石的传热过程分析,建立描述钻头在钻掘岩石过程中温度变化的微分方程组,归纳影响钻头温度变化的各种影响因素。在对钻头钻掘岩石过程进行热功转换分析的基础上,给出钻头温度的解析计算方法,并结合钻头切削面温度解析计算式,给出钻头温度的解析方程。研究结果表明:钻头在钻掘岩石过程中的温度受几何条件、热物性质、钻掘参数等因素影响;在其他条件一定的情况下,钻头平均温度升高与钻头推进速度v的平方根成正比。Temperature variation of the drill bit in the process of rock drilling was studied systematically.Through the analysis of heat transfer process of the drilling in rock drilling,differential equations which described the temperature fluctuations in the process of rock drilling were established and various factors which affected the temperature fluctuations of the drill bit were also analyzed.Based on the analysis of the conversion between thermal and power in rock drilling,analytical method for temperature computation of the drill bit was given.Analytical equation of the bit temperature was derived associated with the analytical expression of cutting temperature.The results show that the temperature of drill bit is influenced by geometry condition,thermal properties,drilling element,and so on.The average rising temperature is proportional to the square root of forward speed v of the drill bit when the other conditions remain unchanged.

关 键 词：岩石 钻掘 侵入 切削 温度 

分 类 号：TD80[矿业工程—矿山开采]