Results 21 to 30 of about 1,981,740 (257)

Artificial intelligence for tunnel boring machine penetration rate prediction

open access: yes, 2023
Penetration rate prediction of Tunnel Boring Machines (TBM) is critical for understanding excavation performances. In this paper, we investigate the possibility of developing machine learning models that accurately predict the Penetration Rate of a TBM ...
Flor A.   +6 more
core   +1 more source

Influence of geology on tunnel boring machine performance: A review [PDF]

open access: yesJournal of Mining and Metallurgy. Section A: Mining, 2020
Tunnel boring machines are used for excavating a variety of soils and rocks for circular cross-section tunnels. Several published studies examined the role of rockmass in determining the cutting and advance rate of tunnel boring machines. A comprehensive
Pandey P.K.   +5 more
doaj  

Numerical study on the rock breaking mechanism of high-pressure water jet-assisted TBM digging technique based on 2D-DEM modelling

open access: yesFrontiers in Earth Science, 2023
In order to improve the digging efficiency of tunnel boring machine (TBM) in high-strength and highly abrasive formations, high-pressure water jet-assisted tunnel boring machine rock breaking technology has been developed and applied in steps.
Yalong Jiang   +5 more
doaj   +1 more source

Study of the Permeability of Foam Conditioned Soils with Laboratory Tests [PDF]

open access: yes, 2010
EPB tunneling requires that the excavated soil has a plastic and pulpy behavior to be able to apply a stabilizing pressure to the face, but it should also be impervious to counteract filtration forces that could develop ahead of the face.
PEILA, Daniele   +4 more
core   +1 more source

Deep learning characterization of rock conditions based on tunnel boring machine data

open access: yesUnderground Space, 2023
Rock condition perception based on tunnel boring machine (TBM) data is of great importance for not only ensuring tunnel boring safety but also improving construction efficiency. The prediction of TBM boring responses (i.e., torque and total thrust of the
Xu Li   +4 more
doaj   +1 more source

Feedback on a shared big dataset for intelligent TBM Part I: Feature extraction and machine learning methods

open access: yesUnderground Space, 2023
This review summarizes the research outcomes and findings documented in 45 journal papers using a shared tunnel boring machine (TBM) dataset for performance prediction and boring efficiency optimization using machine learning methods. The big dataset was
Jian-Bin Li   +12 more
doaj   +1 more source

A Shield Segment Bolt Detection and Localization Method Based on Ellipse Detection

open access: yesIEEE Access
The automatic assembly of shield tunnel segments can significantly reduce labor intensity and improve tunneling efficiency. However, during the automatic segment gripping process, traditional methods of setting targets introduce manual errors and ...
Jie Liu   +5 more
doaj   +1 more source

Single-Level Station Complex Structure for Application of Through Driving Construction Method

open access: yesНаука и техника, 2020
Metro Service has a huge impact on the development of urban transport infrastructure. The need to increase the efficiency of passenger transportation is caused by the rapid growth in passenger turnover as well as an increase in the distance from the ...
A. О. Kolikov, G. P. Pastushkov
doaj   +1 more source

Stability analysis of TBM tunnel under unfavorable geological conditions of large dip faults

open access: yesMeitan xuebao
Based on the Dali I section of the Central Yunnan Diversion Dali Tunnel Project, an indoor model test of TBM traversing faulted geological conditions under high ground stress was carried out using the self-developed miniature TBM tunneling integrated ...
Liming WANG
doaj   +1 more source

Research on multi-objective optimization method of Z-shaped pipeline structure based on Kriging model

open access: yesScientific Reports
Slurry pipeline transportation is widely used in dredging and serves as an essential method for conveying solid materials. However, accurately describing the interaction between slurry and particles through numerical simulations, while optimizing the ...
Chunya Sun   +8 more
doaj   +1 more source

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