| 微型土压平衡盾构机刀盘开口率对排土率的影响 |
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| 引用本文： | 王世杰,;王学科,;王吉业,;刘春光,;关振华. 微型土压平衡盾构机刀盘开口率对排土率的影响[J]. 中国工程机械学报, 2014, 0(3): 204-207 |
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| 作者姓名： | 王世杰, 王学科, 王吉业, 刘春光, 关振华 |
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| 作者单位： | [1] 沈阳工业大学机械工程学院,辽宁沈阳110870; [2] 北方重工全断面掘进机国家重点实验室,辽宁沈阳110141 |
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| 摘 要： | 刀盘开口率是刀盘设计的关键参数,是决定盾构机是否稳定掘进的关键参数之一.在充分理解刀盘与开挖面相互作用的基础上,分析了开口率对排土率的影响,并推导出最大排土率与最小排土率的计算方法.根据该计算方法,研究了不同直径的刀盘在砂砾石地层掘进时,排土率随开口率变化的情况.分析结果表明:在砂砾石地层中直径为3m的刀盘开口率取值为70%~85%时有利于开挖面的稳定.
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| 关 键 词： | 盾构机 土压平衡 开口率 排土率 |
Impact of cutter-head aperture ratio on dumping rate for miniature earth pressure balance shield tunneling machines |
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| Affiliation: | WANG Shi-jie, WANG Xue-ke, WANG Ji-ye, LIU Chun-guang, GUAN Zhen-hua ( 1. School of Mechanical Engineering, Shenyang University of Technology, Shenyang 110870, China 2. State Key Laboratory of Whole Section, the North Heavy Industries Machine,Shenyang 110141 ,China) |
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| Abstract: | The cutter-head aperture ratio, one of critical parameters for shield tunneling machine stability, secures a critical position in cutter-head design. Based on the interaction between aperture ratio and excavation face, the impact of aperture ratio on dumping rate is first analyzed. Meanwhile, the calculation method for maximum and minimum dumping rates is deduced. In case of cutter-heads with different diameters tunneling in the sand gravel, the dumping rate is then investigated with variation of aperture ratio. Finally, it is detected from analysis results that, when 3 m cutter-head is tunneled in the sand gravel, the aperture ratio ranging from 70 % to 85 % is appropriate to the excavation face stability. |
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| Keywords: | shield tunneling machine earth pressure balance aperture ratio dumping rate |
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