镐齿截割煤断裂模式研究  

Study on coal break mode with point-attack pick cutting

作　　者：王琦[1] 李贵轩[1] 王春华[1] 

机构地区：[1]辽宁工程技术大学机械工程学院,辽宁阜新123000

出　　处：《辽宁工程技术大学学报（自然科学版）》2004年第2期247-249,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：煤炭留学回国人员基金资助项目(94050)

摘　　要：针对镐型齿截煤理论不完善的现状,采用力学分析与试验研究相结合的方法,对煤体的断裂模式进行了研究。推导出断裂模式的表征参数——断裂角φ的表达式,该推导公式在镐型齿的截割模拟试验中得以验证,快速摄影对截割过程所作的实时写真,为力学模型的建立辅以佐证。In view of the present situation that coal cutting mechanism of point-attack pick is not perfect . The break mode was studied in the thesis by means of combining mechanical analysis with experiments study. The factor of affecting the break mode were obtained by means of theoretical calculation and they were verified by cutting test in laboratory. High-speed photograph was adopted to take down the process of cutting with point-attack pick , from which we can learn the regularity of the crackle expanding, and it provided evidence for building mechanical model.

关 键 词：镐型截齿 煤 断裂模式 截割试验 快速摄影 

分 类 号：TD421.6[矿业工程—矿山机电]