摘要
为了确定玲珑金矿悬臂式掘进机最佳截割参数,采用颗粒流数值模拟仿真软件模拟了28种工况。结果表明:(1)岩体强度、截割深度的增加,显著阻碍了截齿对岩体的破坏,而截割角度的增加对截齿破岩的影响较小;(2)F_(n)/F_(c)与截割深度呈线性降低,与截割角度呈二次项函数先增后减,在岩体强度增加时,截割法向力和切向力均增大,但是F_(n)/F_(c)减小;(3)掘进机的最佳工作条件为岩体强度25MPa,截割深度8mm,截割角度35°或50°。
In order to determine the optimal cutting parameters of cantilever Tunneling Machine in Linglong Gold Mine,28 working conditions were simulated by particle flow code numerical simulation software.The results show that:(1)The increase in rock mass strength and cutting depth significantly hinders the damage of the cutting teeth to the rock mass,while the increase in cutting angle has little effect on the rock breaking of the cutting teeth.(2)F_(n)/F_(c)decreases linearly with the cutting depth,and first increases and then decreases with the cutting angle in a quadratic function.As the rock mass strength increases,both the cutting normal and tangential forces increase,but F n/Fc decrease.(3)The optimal working conditions for the tunneling machine are rock mass strength of 25 MPa,cutting depth of 8 mm,and cutting angle of 35°or 50°.
作者
武茂超
万鹏
姚树标
黄开飞
汪杰
Wu Maochao;Wan Peng;Yao Shubiao;Huang Kaifei;Wang Jie(Shandong Gold Mining(Linglong)Co.,Ltd.,Shandong,265433;School of Civil and Resources Engineering,University of Science and Technology Beijing,Beijing,100083)
出处
《当代化工研究》
CAS
2023年第19期57-60,共4页
Modern Chemical Research
关键词
截割力
PFC^(3D)
比能耗
裂纹演化
cutting force
PFC^(3D)
specific energy consumption
crack evolution
