土压平衡式盾构掘进试验及掘进数学模型研究.pdf

第 24 卷 增 2 岩石力学与工程学报 Vol.24 Supp.2 2005 年 11 月 Chinese Journal of Rock Mechanics and Engineering Nov.，2005 土压平衡式盾构掘进试验及掘进数学模型研究 张厚美，吴秀国，曾伟华 (广州市盾建地下工程有限公司，广东 广州 510030) 摘要：应用正交试验设计技术，进行盾构掘进参数组合试验，采用多元统计分析方法，对土仓压力、推力、刀盘 转速等主要掘进参数对掘进速度、刀盘扭矩的影响进行了研究，得到了土压平衡式盾构在软土中的掘进速度数学 模型和刀盘扭矩数学模型，模型平均误差约为 10%。研究结果表明：对掘进速度和刀盘扭矩影响最大的3 个操作 参数依次为：千斤顶推力、土舱压力和刀盘转速。掘进速度、刀盘扭矩与千斤顶推力成正比，与土舱压力成反比， 刀盘转速对刀盘扭矩和掘进速度影响不大。 关键词：数值分析；数学模型；盾构；试验；正交试验设计 中图分类号：O 242 ；TV 672.1 文献标识码：A 文章编号：1000 –6915(2005)增 2 –5762 –05 STUDY ON TUNNELING EXPERIMENT AND MATHEMATICAL MODEL OF EPB SHIELD ZHANG Hou-mei ，WU Xiu-guo ，ZENG Wei-hua (Guangzhou Municipal Dunjian Underground Construction Engineering Co.，Ltd .，Guangzhou 510030，China) Abstract ：Orthogonal experimental design is applied to shield tunneling experiment with variable parameters combination. The effects of earth pressure，thrust force and cutting wheel rotation speed on the advance speed ，and torque of cutting wheel are investigated by multivariate statistical analysis. The mathematical model of advanced speed and torque of cutting wheel of EPB(earth-pressure-balanced) shield in soft ground is proposed. The mean error of mathematical model is less than 10%. The achieved results show that the tunneling parameters which affect the advance speed and torque of cutting wheel are earth pressure ，thrust force ，and cutting wheel rotation speed in succession. The advanced speed and torque of cutting wheel are in direct proportion to the thrust force，but in inverse proportion to the earth pressure. The cutting wheel rotation speed has little effect on the advance speed. Key words ：numerical analysis ；mathematics model ；shield；experiment ；orthog