Results 1 to 10 of about 106,010 (167)

Risk Assessment of EPB Shield Construction Based on the Nonlinear FAHP Method

open access: yesAdvances in Civil Engineering, 2022
There are many risk factors in EPB shield construction. The traditional fuzzy analytic hierarchy process (FAHP) method usually uses a linear analysis method to determine the risk level, but there are often some risk factors with prominent influence ...
Xueyan Wang   +4 more
doaj   +2 more sources

Application Ranges of EPB Shield TBM in Weathered Granite Soil: A Laboratory Scale Study

open access: yesApplied Sciences, 2021
Soil conditioning is a key factor in increasing tunnel face stability and extraction efficiency of excavated soil when excavating tunnels using an earth pressure balance (EPB) shield tunnel boring machine (TBM).
Tae-Hwan Kim   +4 more
doaj   +2 more sources

Numerical Simulation of EPB Shield Tunnelling with TBM Operational Condition Control Using Coupled DEM–FDM

open access: yesApplied Sciences, 2021
This study demonstrates a three-dimensional numerical simulation of earth pressure balance (EPB) shield tunnelling using a coupled discrete element method (DEM) and a finite difference method (FDM).
Hyobum Lee   +5 more
doaj   +2 more sources

Auxiliary air pressure balance mode for EPB shield tunneling in water-rich gravelly sand strata: Feasibility and soil conditioning

open access: yesCase Studies in Construction Materials, 2022
Machine loads are always high, or soil conditioning is required to be rigorous when the pressure chamber is full of excavated soil during earth pressure balance (EPB) shield tunneling.
Shuying Wang   +3 more
doaj   +1 more source

Clogging Prevention of Slurry–Earth Pressure Balance Dual-Mode Shield in Composed Strata with Medium–Coarse Sand and Argillaceous Siltstone

open access: yesApplied Sciences, 2023
The slurry–earth pressure balance dual-mode shield has an earth pressure balance (EPB) and slurry shield functions. Based on a shield tunnel project of Guangzhou Metro Line 12 in China, this study investigates the clogging prevention of a slurry–earth ...
Zhao Yang   +4 more
doaj   +1 more source

Visualization of Multivariate Time-Series Characteristics of Ground Loss Caused by Shield Tunneling

open access: yesShock and Vibration, 2021
Ground loss due to earth pressure balance shield tunneling eventually leads to a surface settlement which can be an issue of great concern. However, the existing machine learning methods ignore the continuous and dynamic nature of EPB shield tunneling ...
Zhu Wen   +4 more
doaj   +1 more source

Prediction Model of Shield Performance During Tunneling via Incorporating Improved Particle Swarm Optimization Into ANFIS

open access: yesIEEE Access, 2020
This paper proposes a new computational model to predict the earth pressure balance (EPB) shield performance during tunnelling. The proposed model integrates an improved particle swarm optimization (PSO) with adaptive neurofuzzy inference system (ANFIS ...
Khalid Elbaz   +4 more
doaj   +1 more source

Deformation Characteristics of Existing Twin Tunnels Induced by Double Shield Undercrossing with Prereinforcement: A Case Study in Hangzhou

open access: yesAdvances in Civil Engineering, 2021
This paper is based on the case of the earth pressure balance (EPB) shield tunnelling project of the new Metro Line 2 undercrossing the existing Metro Line 1 in the soft soil urban area of Hangzhou.
Xinjiang Wei   +5 more
doaj   +1 more source

Compound Karst Cave Treatment and Waterproofing Strategy for EPB Shield Tunnelling in Karst Areas: A Case Study

open access: yesFrontiers in Earth Science, 2021
There is high risk of water inrush and ground collapse accidents when tunnelling in karst areas. Based on the case study of an urban metro tunnel, this paper focuses on karst cave treatment and waterproofing strategies for earth pressure balancing (EPB ...
Yongshui Kang   +8 more
doaj   +1 more source

Face stability analysis of EPB shield tunnel in sand

open access: yesYantu gongcheng xuebao, 2018
When an earth pressure balanced (EPB) shield tunnel is constructed in sand which is weakly self-stabilized, face failure may occur if the support pressure in the chamber is not strong enough, and much attention should be paid to it. The three-dimensional
WANG Jun 1,2, HE Chuan 1, WANG Chuang 1, CHEN Zi-quan 1, TANG Rui 2
doaj   +1 more source

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