基于AUTODYN-3D的全断面岩石掘进机盘形滚刀间距优化研究  

A Study on Spacing Optimization of Disk Cutters in Full Face Rock TBM Based on AUTODYN-3D

作　　者：李刚[1] 朱利达[1] 王博[1] 王宛山[1] 

机构地区：[1]东北大学机械工程与自动化学院先进制造及自动化技术研究所,沈阳110047

出　　处：《机械制造》2012年第8期5-8,共4页Machinery

基　　金：国家科技支撑计划项目(编号:2007BAF09B01);中央高校基本科研业务项目(编号:N090603006)

摘　　要：数值模拟法不仅成本较低,而且能够较为精确地对破岩过程进行仿真。以岩石断裂力学为理论基础,深入分析了全断面岩石掘进机滚刀的破岩机理,采用三维数值模型AUTODYN-3D来模拟岩石破碎的过程,测试中采用了由推力和滚动力共同作用下的破碎机理,这与实际隧道掘进机滚刀的工作条件十分接近。对模型使用了不同的边界条件,针对花岗岩模型,精确地对滚刀破岩过程进行了模拟,并且以花岗岩为例探讨了盘形滚刀间距优化问题。结果表明,该数值模拟方法不仅有助于更好地理解滚刀的破岩机理,而且对确定盘形滚刀最优切割条件和实验测试提供了理论基础。Numerical simulation method is not only cost-effective, but also possible to simulate the rock breaking process in a more accurate way. With rock fracture mechanics as the theoretical basis and with in-depth analysis of the rock breaking mechanism adopted by full face rock TBM hob, it introduces three-dimensional numerical model AUTODYN-3D to simulate rock breaking process and employs the rock breaking mechanism under co-action of thrust and roiling force during its test. The result reveals that it is very close to the working conditions of the actual TBM hobs. Different boundary conditions have been applied to the model. Aiming at the granite model, an accurate simulation on rock breaking process by hobs has been conducted with a case study on spacing optimization of disc-type hobs for granite breaking. The results show that the numerical simulation approach does not only contribute to a better understanding of rock breaking mechanism by hobs, but also provides a theoretical basis for identification of optimal cutting conditions and experimental tests for the disc-type hobs.

关 键 词：全断面岩石掘进机 盘形滚刀 破岩机理 滚刀间距优化 

分 类 号：TH123[机械工程—机械设计及理论] TD263[矿业工程—矿井建设]