基于破岩能耗的TBM盘形滚刀的刀刃角设计

发布时间：2018-01-16 18:30

本文关键词：基于破岩能耗的TBM盘形滚刀的刀刃角设计　出处：《华北电力大学》2015年硕士论文　论文类型：学位论文

【摘要】：近些年来我国经济发展迅速,但是伴随而来的是交通拥挤和生存空间变窄,这些因素促使隧道工程项目日益增多,隧道掘进机在铁路隧道、城市地铁、西气东输等隧道工程中成为重要的施工设备。但其主要部件仍需进口,并且隧道掘进机刀盘的滚刀研发和制造与国外还有一定差距。优化已知刀具的结构,能对提升滚刀使用寿命及其设计与制造提供可靠经验。盘形滚刀是TBM破碎岩石所必需的部件,同时也是特别容易磨损和损坏的部分,与隧道工程施工周期和费用密切相关的是TBM的破岩效率和承受载荷。通过查阅文献,总结TBM盘形滚刀的破岩机理,列出能够影响刀具破岩时的参数变量,本文利用有限元软件对TBM盘形滚刀的几何结构进行了设计与分析。本文包括以下主要几项内容：(1)对盘形滚刀破岩过程中机理进行分析,选取合适岩石材料,列出盘形滚刀破碎岩石的主要失效形式,判别岩石材料的失效准则,使其接近实际破岩工况。(2)获取不对称刃形滚刀几何参数,材料参数。以盘形滚刀破岩中轴承受力最小为目标,以刀刃角不对称的盘型滚刀在正安装下建立破岩模型。(3)最终对模型进行动态分析,获得实验数据,包括力、比能等,与理论数据进行对比,对破岩效能进行分析。改变刀具相关参数,优化模型。
[Abstract]:In recent years, China's economic development is rapid, but accompanied by traffic congestion and narrow living space, these factors promote the increasing number of tunnel projects, tunnel tunneling machine in railway tunnels, urban subway. West to East Gas Transmission and other tunnel projects have become important construction equipment, but its main components still need to be imported, and there is still a gap between the research and development and manufacture of the cutter head of tunnel tunneling machine, and the structure of known cutting tools is optimized. It can provide reliable experience for the service life of hob and its design and manufacture. Disc hob is the necessary part for breaking rock in TBM, and it is also especially easy to wear and damage. The rock breaking efficiency and bearing load of TBM are closely related to the construction cycle and cost of tunnel engineering. The rock breaking mechanism of TBM disc hob is summarized by consulting the literature. Lists the parameter variables that can affect the rock breakage of a tool. In this paper, the geometric structure of TBM disc hob is designed and analyzed by using finite element software. The main contents of this paper are as follows: 1) the mechanism of disc hob breaking through rock is analyzed. Select suitable rock material, list the main failure forms of rock broken by disc hob, judge the failure criterion of rock material, make it close to the actual rock breaking condition, and obtain the geometric parameters of asymmetric edge hob. Material parameters. Aiming at the minimum bearing capacity of the shaft of the disc hob breaking rock, and taking the disk-shaped hob with asymmetric blade angle to establish the rock breaking model under the positive installation, the dynamic analysis of the model is carried out, and the experimental data are obtained. Including force, specific energy and so on, compared with the theoretical data, the effectiveness of rock breaking is analyzed. The tool parameters are changed and the model is optimized.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U455.3

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