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(사)한국터널지하공간학회

ISSN : 2233-8292

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Vol.21 No.4
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Development of penetration rate prediction model using shield TBM excavation data

(사)한국터널지하공간학회 / (사)한국터널지하공간학회, (P)2233-8292; (E)2287-4747
2019, v.21 no.4, pp.519-534
https://doi.org/10.9711/KTAJ.2019.21.4.519



& (2019). Development of penetration rate prediction model using shield TBM excavation data. (사)한국터널지하공간학회, 21(4), 519-534, https://doi.org/10.9711/KTAJ.2019.21.4.519
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Abstract

Mechanized tunneling methods, including shield TBM, have been increasingly used for tunnel construction because of their relatively low vibration and noise levels as well as low risk of rock-falling accidents. In the excavation using the shield TBM, it is important to design penetration rate appropriately. In present study, both subsurface investigation data and shield TBM excavation data, produced for and during ○○~○○ high-speed railway construction, were analyzed and used to compare with shield TBM penetration rates calculated using existing penetrating rate prediction models proposed by several foreign researchers. The correlation between thrust force per disk cutter and uniaxial compressive strength was also examined and, based on the correlation analysis, a simple prediction model for penetration rate was derived. The prediction results using the existing prediction models showed approximately error rates of 50~500%, whereas the results from the simple model proposed from this study showed an error rate of 15% in average. It may be said, therefore, that the proposed model has higher applicability for shield TBM construction in similar ground conditions.

keywords
쉴드 TBM, 굴착속도, 예측모델, 굴진성능, Shield TBM, Penetration rate, Excavation data, Prediction model

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