Estimation of uniaxial compressive strength at tunnel face using TBM operation data

被引：0

作者：

Ko, T. Y. ^{[1
]}

Kim, T. H. ^{[2
]}

机构：

[1] Kangwon Natl Univ, Chunchon, South Korea

[2] SK Ecoplant, Seoul, South Korea

来源：

PROCEEDINGS OF THE ITA-AITES WORLD TUNNEL CONGRESS 2023, WTC 2023: Expanding Underground-Knowledge and Passion to Make a Positive Impact on the World | 2023年

基金：

新加坡国家研究基金会;

关键词：

D O I：

10.1201/9781003348030-331

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

One of the most crucial factors influencing the excavation speed of TBM tunnels is rock strength. Laboratory tests in geotechnical investigations can determine rock strength, but determining the UCS for the entire TBM excavation section is impossible. To apply the appropriate operation parameters during TBM excavation, determining the rock strength that affects the excavation speed is essential. Therefore, the objective of this study is to estimate rock strength using machine data obtained during TBM excavation. The slurry shield TBM excavation of the rock strata provided the TBM machine data and the UCS required for the analysis. The data were split in a ratio of 7:3 for training and testing, pre-processed with scaling, and outlier removal. According to the findings, the Adaboost model is inferred to be the most accurate at predicting UCS from TBM excavation data, with root-mean-square error and determination coefficient values of 5.14 and 0.96, respectively.

引用

页码：2750 / 2756

页数：7

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