复杂地层盾构掘进速率和刀盘扭矩预测模型及其地层适应性研究

发布时间：2018-04-27 10:04

本文选题：盾构 + 复杂地层　；参考：《隧道建设》2016年12期

【摘要】：以复杂地层地质分段为基础,统计不同地质分段的盾构掘进参数,开展针对盾构掘进速率与刀盘扭矩的多元回归分析,得到适用于复杂地层的掘进参数回归模型,并分析回归模型系数与全断面等效岩体基本质量指标间的相关性。研究表明:全断面等效岩体基本质量指标考虑了复杂地层中不同区段掌子面内各地层面积占比差异,可作为地质分段标准;掘进速率与刀盘扭矩的回归预测值与实测值间相对误差较小,回归模型对均质地层及复合地层均有较好的拟合精度;围岩等级提高时,掘进速率、刀盘扭矩回归模型系数具有明显的分段变化特征。其量化结论可用于定量预测不同地层盾构掘进参数,以提高盾构施工效率。
[Abstract]:Based on the geological segmentation of complex strata, the tunneling parameters of different geological sections are counted, and the regression analysis of tunneling speed and cutter head torque is carried out to obtain a regression model of tunneling parameters suitable for complex strata. The correlation between the regression model coefficient and the basic quality index of the whole section equivalent rock mass is analyzed. The results show that the basic quality index of full section equivalent rock mass takes into account the difference of area ratio of different sections in complex strata and can be used as the standard of geological segmentation. The relative error between the regression prediction value and the measured value of tunneling rate and cutter head torque is relatively small, and the regression model has better fitting accuracy for both homogeneous and composite strata, and when the surrounding rock grade increases, the tunneling rate can be improved. The coefficient of torque regression model of cutter head has obvious piecewise variation characteristic. The quantitative conclusions can be used to quantitatively predict the tunneling parameters of different strata and to improve the efficiency of shield construction.
【作者单位】：中交隧道工程局有限公司;南京工业大学岩土工程研究所;江苏省岩土工程公司;
【基金】：中交隧道局重点科研项目(SDKJ2014-005)
【分类号】：U455.43

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