小断面土石组合地质条件下TBM施工围岩可掘性分级识别

杨耀红; 刘德福; 张智晓; 韩兴忠; 孙小虎

doi:10.11988/ckyyb.20221309

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长江科学院院报 ›› 2024, Vol. 41 ›› Issue (3) : 79-87. DOI: 10.11988/ckyyb.20221309

岩土工程

小断面土石组合地质条件下TBM施工围岩可掘性分级识别

杨耀红^1,2, 刘德福¹, 张智晓³, 韩兴忠¹, 孙小虎^1,4

作者信息 +

Classification and Predictive Research on Excavability of Surrounding Rock for TBM Construction in Small Section with Soil-Rock Composite Geological Condition

YANG Yao-hong^1,2, LIU De-fu¹, ZHANG Zhi-xiao³, HAN Xing-zhong¹, SUN Xiao-hu^1,4

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文章历史 +

摘要

围岩可掘性分级以及识别研究对隧道掘进机(TBM)高效率施工及智能化控制意义重大。依托南水北调安阳市西部调水工程TBM施工实际数据,利用掘进性能综合指标单位贯入度推力(FPI)、单位贯入度扭矩(TPI)建立了小断面土石组合地质条件下TBM施工围岩可掘性分级标准;提出了PCA-RF模型对围岩可掘性分级进行识别,并与BP、SVR和RF模型进行了比较讨论。结果表明:①建立的小断面土石组合围岩TBM施工可掘性分级标准是适用的,克服了土石组合围岩下传统围岩分类方法的局限性;②小断面土石组合围岩TBM施工可掘性分级PCA-RF识别模型的识别准确率达到了98.3%,高于BP、SVR和RF模型,可以满足工程施工需要。

Abstract

The efficient construction and intelligent control of TBM heavily rely on the classification and real-time identification of surrounding rock excavability. To address this, we establish a classification standard for surrounding rock excavability in TBM construction under geological conditions characterized by small sections and soil-rock combinations based on actual data (penetration thrust and torque per unit penetration) from the Anyang Western Water Diversion Project. Moreover, we introduce the PCA-RF model for real-time identification and prediction of surrounding rock excavability, and then compared the results with those of BP, SVR, and RF models. Our research yields the following conclusions: 1) The classification standard for surrounding rock excavability in TBM construction under the geological conditions of small sections and soil-rock combinations proves to be applicable. This standard resolves the limitations of traditional methods for classifying surrounding rock in soil-rock composite environments. 2) The PCA-RF model demonstrates an identification and prediction accuracy of 98.3% for the surrounding rock excavability in TBM construction under the geological conditions of small sections and soil-rock combinations. This accuracy surpasses that of the BP, SVR, and RF models and fulfills the demands of engineering construction.

导出引用

杨耀红, 刘德福, 张智晓, 韩兴忠, 孙小虎. 小断面土石组合地质条件下TBM施工围岩可掘性分级识别[J]. 长江科学院院报. 2024, 41(3): 79-87 https://doi.org/10.11988/ckyyb.20221309

YANG Yao-hong, LIU De-fu, ZHANG Zhi-xiao, HAN Xing-zhong, SUN Xiao-hu. Classification and Predictive Research on Excavability of Surrounding Rock for TBM Construction in Small Section with Soil-Rock Composite Geological Condition[J]. Journal of Changjiang River Scientific Research Institute. 2024, 41(3): 79-87 https://doi.org/10.11988/ckyyb.20221309

中图分类号： U452.12

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