煤矿斜井双模式盾构刀盘的受力特性研究

发布时间：2018-10-15 13:06

【摘要】：刀盘是盾构机的关键部件,为保证煤矿斜井双模式盾构的顺利行进,需对刀盘的强度和刚度进行研究.以新街煤矿斜井工程为例,分析双模式盾构刀盘不同模式时在多工况下的受力特性,给出了刀盘载荷计算方法和公式,基于双模式盾构的刀盘结构特点建立简化模型,采用ANSYS软件分析,得出了双模式盾构刀盘不同模式时在多工况下的应力应变分布规律.研究结果表明:最大变形出现在土压平衡盾构(earth pressure balance,EPB)模式偏载堵转工况中,其值为3.821mm,最大应力出现在硬岩隧道掘进(tunnel boring machine,TBM)模式偏载堵转工况中,其值为284 MPa,多种工况最大应力值出现位置均位于牛腿与法兰盘连接处或牛腿与刀盘连接处.根据研究结果可知新街煤矿斜井双模式盾构刀盘设计合理,并针对应力集中部位提出了优化建议.
[Abstract]:Cutter head is the key component of shield machine. In order to ensure the smooth progress of double-mode shield machine in inclined coal mine, the strength and stiffness of cutter head should be studied. Taking the inclined shaft engineering of Xinjie coal mine as an example, this paper analyzes the mechanical characteristics of double-mode shield cutter head under different modes, and gives the calculation method and formula of cutter head load. Based on the structural characteristics of double-mode shield machine, a simplified model is established. Based on the analysis of ANSYS software, the stress and strain distribution law of double-mode shield cutter head under different modes is obtained. The results show that the maximum deformation occurs in the eccentric load plugging operation of the earth pressure balance shield (earth pressure balance,EPB) mode, which is 3.821 mm, and the maximum stress occurs in the eccentric load plugging condition of the hard rock tunnel tunneling in the (tunnel boring machine,TBM) mode. The maximum stress values of 284MPa, are located at the joint between the leg and the flange or between the leg and the cutter head. According to the research results, the design of double-mode shield cutter head in the inclined shaft of Xinjie Coal Mine is reasonable, and the optimization suggestions for the stress concentration are put forward.
【作者单位】：西南交通大学机械工程学院;
【基金】：国家科技支撑计划资助项目(2013BAB10B01)
【分类号】：TD262.12

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