路基工程Issue(3)：49-54,6.DOI:10.13379/j.issn.1003-8825.2017.03.10
不同贯入度下铁路隧道TBM盘形滚刀的破岩效率分析
Analysis on Rock Breaking Efficiency by TBM Disc Cutter of Railway Tunnel under Different Penetration Conditions
摘要
Abstract
According to the specific rock conditions of Gaoligong Mountain tunnel project of Dali-Ruili railway,a numerical model of rock breaking by disc cutter was established based on the explicit dynamics theory and rock fragmentation criterion.The rock breaking efficiency under different penetration conditions was analyzed.The results showed that:with the increase of penetration,the equivalent plastic strain zone of the bottom rock linked up gradually,meanwhile,the depth of the trench was increasing,and the width of the rock ridge decreased gradually.The tangential force curves showed positive fluctuation characteristics.With the increasing of penetration,the average tangential force and the volume of broken rock presented a nonlinear incremental relationship.Moreover,the specific energy consumption decreased first and then increased,which indicated that there was an optimal value of penetration corresponded to the minimum specific energy consumption.关键词
大瑞铁路/隧道工程/盘形滚刀/滚刀破岩/最优贯入度/数值模拟Key words
Dali-Ruili railway/tunnel project/disc cutter/rock breaking by disc cutter/optimal penetration/numerical simulation分类
交通工程引用本文复制引用
邓志鑫,晏启祥..不同贯入度下铁路隧道TBM盘形滚刀的破岩效率分析[J].路基工程,2017,(3):49-54,6.基金项目
中国铁路总公司科技研究开发计划(2014G004-H) （2014G004-H）
