全断面岩石掘进机盘形滚刀破岩模拟  

Simulation Study on Disc Cutter of Full Face Rock Tunnel Boring Machine

作　　者：张珂[1] 王腾跃[1] 孙红[1] 王贺[1] 赵凯军[2] 

机构地区：[1]沈阳建筑大学交通与机械工程学院,辽宁沈阳110168 [2]沈阳北方重工集团有限公司,辽宁沈阳110025

出　　处：《沈阳建筑大学学报（自然科学版）》2010年第6期1209-1213,1218,共6页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家十一五科技支撑计划重大项目(2007BAF09B01);科技人员服务企业行动计划项目(2009GJB00025);沈阳建筑大学省级重点实验室基金项目(jx-200902)

摘　　要：目的通过破岩模拟优化盘型滚刀刀圈,改善滚刀的设计,减少滚刀失效,提高滚刀使用寿命.方法根据岩石Drucker-Prager塑性准则和岩石力学特性,利用ABAQUS有限元软件模拟了破岩过程中盘型滚刀和岩石的受力和变形,分析了不同压入深度对受力和变形的影响.结果研究结果显示,当盘型滚刀的压入深度为0.76 mm时,岩石和滚刀接触出现破碎;随着滚刀压入深度的增加,对应岩石破碎区的应力区和变形区增大,但应力区的增大更显著.结论研究结果对理解TBM的破岩机理和盘型滚刀的结构优化具有一定的参考价值,同时为今后进一步使用有限元软件模拟滚刀破岩的研究打下了基础.Disc cutters are key parts in a full face rock tunnel boring machine（TBM）.Most of the failures of TBM have a direct or indirect relationship with the failures of disc cutters.Simulating the disc cutter and rock in the process of breaking rock can optimize design of cutter rings,reduce failure of disc cutters,and improve life-time of disc cutters.In this paper,according to Drucker-Prager plasticity criterion of rocks and mechanical properties of rocks,we used the ABAQUS finite element software to simulate the force and deformation of disc cutters and rocks in the process of breaking rock,and analyzed the impacts of different indentation depths on force and deformation.The results show that fragmentation of rock occurs at the contact zone of rock with disc cutters when the indentation depth obtains 0.76mm,and,the corresponding areas of rock crushing stress zone and deformation zone enlarge with the increases of indentation depth,and the increase in the area of stress zone is more pronounced than that of deformation zone.The results are definitely valuable for understanding the mechanism and structural optimization of disc cutters,and for using finite element software to simulate the disc cutter and rock in the process of breaking rock.

关 键 词：全断面岩石掘进机 盘形滚刀 破岩 有限元 

分 类 号：TD263.33[矿业工程—矿井建设] TD421.54