| 土压平衡盾构反扭矩的分析和计算 |
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| 引用本文： | 郭玉海,王梦恕,张照煌,王磊.土压平衡盾构反扭矩的分析和计算[J].岩土力学,2013,34(5):1449-1452. |
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| 作者姓名： | 郭玉海 王梦恕 张照煌 王磊 |
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| 作者单位： | 1. 北京交通大学 隧道及地下工程教育部工程研究中心，北京 100044；2. 华北电力大学 能源动力与机械工程学院，北京 102206 |
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| 摘 要： | 盾构是土质隧道（洞）全断面开挖的高效、环保、安全、优质的地下工程施工机械，在国内城市地铁建设中已被广泛应用。盾构的始发掘进是盾构施工的关键技术之一，通过对盾构正常掘进和始发掘进的分析，引用土力学的基本原理，建立土压平衡盾构在这两种掘进模式下的力学模型，给出了土压平衡盾构在这两种掘进模式下的阻滞力矩计算公式，并对盾构正常掘进模式下阻滞力矩的构成和作用进行了分析。研究结果表明，正常掘进模式下，洞壁产生的阻滞力矩足以克服盾构刀盘刀具切削土体产生的反扭矩；而盾构在始发掘进时，必须在其托垫与其盾壳间采取防扭转措施。以在施工的某土压平衡盾构隧道工程为例，对所建立的公式进行了应用研究，取得了良好效果，可为土压平衡盾构的设计和应用提供参考。
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| 关 键 词： | 土压平衡盾构 阻滞力矩 防扭 |
| 收稿时间： | 2012-01-19 |
Analysis and calculation of reverse torque of earth pressure balance shield |
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| GUO Yu-hai,WANG Meng-shu,ZHANG Zhao-huang,WANG Lei.Analysis and calculation of reverse torque of earth pressure balance shield[J].Rock and Soil Mechanics,2013,34(5):1449-1452. |
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| Authors: | GUO Yu-hai WANG Meng-shu ZHANG Zhao-huang WANG Lei |
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| Institution: | 1. Tunnel and Underground Engineering Research Center of Ministry of Education, Beijing Jiaotong University, Beijing 100044, China; 2. School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China |
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| Abstract: | Shield is a kind of underground construction machinery used to excavate soil tunnel with efficiency, environmental protection, safety and high quality, and it is employed widely in city metro construction in China. The origin driving of shield is one of the key techniques in shield construction. Through analyzing normal and origin driving shields, the mechanical model of shield driving in the two driving modes is established with reference to fundamental principles of soil mechanics. The calculation formula for resistance moment of the shield is presented, and the composition and effects of resistance moment of normal driving mode of shield are analyzed. It is discovered that in the normal driving mode, the resistance moment from the cave wall is strong enough to countervail the reverse torque resulted from the shield chisels’ cutting rock, and during the origin driving, protective measures should be taken in between shield cushion and its crust to prevent torsion. The formula has been adopted in some earth pressure balance (EPB) shield tunneling construction project with good results achieved. Conclusions can be referenced for the design and application of EPB shield. |
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| Keywords: | earth pressure balance (EPB) shield resistance moment anti-torsion |
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