Results 11 to 20 of about 1,859 (209)

Synchronous Grouting Analysis of Shield Tunneling through High Water Pressure Fault Fracture Zone

open access: yesApplied Sciences, 2023
Using numerical software to establish a three-dimensional geological model of shield tunneling through fault fracture zones, considering the synchronous grouting effect at the shield tail, the disturbance of various geotechnical structures in the fault ...
Yi Zeng   +10 more
doaj   +1 more source

Design Improvement of Cutting Part in Tunneling Shield [PDF]

open access: yesMATEC Web of Conferences, 2021
The article presents a variant for improving the design of a working body of a tunneling shield, its cutting part to be more precise. The working body of the tunneling shield has been improved with the changes in the design of a rotor working surface ...
Letopolsky Anton   +2 more
doaj   +1 more source

Analysis of Shield Tunnel Ground Deformation Characteristics and Affecting Factors in Water-Rich Soft Stratum: A Case Study on the Section Tunnel of Tianjin Metro Line 6

open access: yesApplied Sciences, 2022
With the increasing intensity of underground development, the planned metro lines will inevitably pass through water-rich soft stratum. The existing research results show that shield tunneling in water-rich stratum is prone to ground settlement and ...
Xinyu Li, Dingli Zhang, Yanjuan Hou
doaj   +1 more source

Surface Settlement Analysis Induced by Shield Tunneling Construction in the Loess Region

open access: yesAdvances in Materials Science and Engineering, 2021
The influence and prediction of shield tunneling construction on surface settlement (SS) and adjacent buildings is a hot topic in underground space engineering.
Caihui Zhu
doaj   +1 more source

Intelligent Analysis of Construction Costs of Shield Tunneling in Complex Geological Conditions by Machine Learning Method

open access: yesMathematics, 2023
The estimation of construction costs for shield tunneling projects is typically based on a standard quota, which fails to consider the variation of geological parameters and often results in significant differences in unit cost. To address this issue, we
Xiaomu Ye   +5 more
doaj   +1 more source

Muck Problems in Subway Shield Tunneling in Sandy Cobble Stratum

open access: yesPolish Maritime Research, 2016
Experiments aiming at the muck improvement for Chengdu’s subway shield tunneling in water-rich sandy cobble ground initially finds out the kinds and ratio of muck improver suitable for the this strata, and through the field application determines the ...
Cui Kai, Lin Weikang
doaj   +1 more source

Fluidization Behavior of Soft Soil Induced by Shield Construction

open access: yesApplied Sciences, 2021
Shield construction will cause the fluidization of soft soil which is characterized by flow plasticity. This paper presents two theoretical models of soil flow behavior based on a fluid mechanics framework to understand the behavior of soft soil during ...
Hui Jin   +4 more
doaj   +1 more source

Unstuck Technology for EPB/TBM Dual Mode Shield Machine Stuck in Rock Stratum

open access: yesChengshi guidao jiaotong yanjiu
[Objective] During the tunneling process of the EPB (earth pressure balance shield machine)/TBM (full-face hard rock tunnel boring machine) dual-mode shield tunneling machine, problems such as excessive wear of the cutting tools and improper setting of ...
DUAN Yueqiang
doaj   +1 more source

Numerical Analysis of Shield Tunnelling Breakthrough Working Shaft by Artificial Ground Freezing Method under Extreme Conditions Considering Phase Change Latent Heat

open access: yesApplied Sciences, 2023
The artificial ground freezing method has been widely used in shield tunneling breakthrough working shafts. The freezing effect was mainly considered in the previous research, and the heat generation of the shield machine was not considered, which has ...
Shengjun Deng   +6 more
doaj   +1 more source

Prediction model for disturbance induced by shield tunneling underneath existing tunnels and optimization of tunneling parameters

open access: yesYantu gongcheng xuebao
To address the issues of structural damage to existing tunnels and operational safety risks of high-speed railways caused by excessive deformation of high-speed railway tunnels due to shield tunneling underneath, accurate prediction of the maximum ...
FEI Ruizhen 1, 2, SHI Chenghua 2, ZHANG Chunlei 1, LI Jingmei 1
doaj   +1 more source

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