基于岩碴流动性的TBM出碴槽口选优设计

发布时间：2018-02-20 07:28

本文关键词： TBM 出碴槽离散元方法 PFC 开口面积　出处：《东北大学学报(自然科学版)》2015年05期 　论文类型：期刊论文

【摘要】：研究了在一定开口面积下,TBM刀盘的最优出碴槽布置方式.采用离散元方法(DEM)建立刀盘排碴仿真模型,以出碴槽结构尺寸、数量等参数为变量进行TBM岩碴流动性仿真实验.在出碴槽开口面积相同的前提下,提出了基于岩碴流动性的出碴槽设计规则:1尽可能采用对称式布置;2尽可能使用长、短出碴槽交替布置的方式;3适当减小长出碴槽的开口宽度以提高出碴过程的稳定性.以"引洮"工程为例进行了验证,结果表明,与原出碴槽结构相比,采用改进方案的刀盘的出碴效率和出碴稳定性分别提高了15.08%和11.97%.
[Abstract]:In this paper, the optimal ballast slot arrangement of TBM cutter head with a certain opening area is studied. The simulation model of ballast discharge of cutter head is established by using discrete element method (DEM), and the structure size of the outlet slot is obtained. Under the same opening area of ballast outlet, the design rule of ballast outlet based on the flowability of rock ballast is put forward, which is as long as possible, and the design rule of ballast outlet based on flowability of rock ballast is as long as possible by using symmetrical arrangement as long as possible. In order to improve the stability of the process of ballast extraction, the alternative arrangement of short outlet groove is used to reduce the opening width of the long ballast groove properly to improve the stability of the ballast extraction process. The results show that compared with the original ballast outlet structure, the "Tao diversion" project is used as an example to verify the stability of the ballast extraction process. The ballast extraction efficiency and ballast stability of the cutter head with the improved scheme are increased by 15.08% and 11.97, respectively.
【作者单位】：大连理工大学机械工程学院;
【基金】：国家自然科学基金青年基金资助项目(51375001) 国家重点基础研究发展计划项目(2013CB035400) 辽宁省科技攻关计划项目(2011220031) 中央高校基本科研业务费专项资金资助项目(DUT13LK14)
【分类号】：U455.31

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