Results 1 to 10 of about 4,830,776 (306)

Predictions of ground surface settlement for shield tunnels in sandy cobble stratum based on stochastic medium theory and empirical formulas

open access: yesUnderground Space, 2023
This paper focuses on the prediction of ground surface settlement induced by shield tunnelling in sandy cobble stratum. Based on the stochastic medium theory, an analytical solution to predict the surface settlement is developed considering the ...
Fan Wang, Xiuli Du, Pengfei Li
doaj   +3 more sources

Surface settlement induced by horizontal directional drilling

open access: yesUnderground Space (China), 2023
Horizontal directional drilling (HDD) is a widely used trenchless method for underground utility connections. The associated ground settlement triggered by HDD depends on the size, types, and surface texture of pipe, diameter of borehole, and soil conditions.
Asif Ahmed, Md Azijul Islam
exaly   +3 more sources

Innovative Grouting Reinforcement Techniques for Shield Tunnels: A Case Study on Surface Settlement Mitigation

open access: yesApplied Sciences
This study investigates the impact of flower tube grouting reinforcement on surface settlement in shield tunnels under complex geological conditions, using the Wuhan Metro Line 12 project as a case example. A simulation model was constructed using PLAXIS
Qiang Ma, Xingchi Zhang, Hang Shu
doaj   +3 more sources

Three-Dimensional Study of Natm Tunneling Near Deep Foundations [PDF]

open access: yesJournal of Structural and Construction Engineering, 2021
As the population grew, cities expanded rapidly, requiring Super structures for residents to live in, as well as heavy structures such as bridges for faster population access to various locations.
GholamReza Havaei, Mohammad Ali Omidi
doaj   +1 more source

An Investigation into the Surface Integrity of Micro-Machined High-Speed Steel and Tungsten Carbide Cutting Tools

open access: yesMicromachines, 2023
The performance and lifespan of cutting tools are significantly influenced by their surface quality. The present report highlights recent advances in enhancing the surface characteristics of tungsten carbide and high-speed steel cutting tools using a ...
Minh Nhat Dang   +8 more
doaj   +1 more source

Influence of large diameter deep buried pipe jacking construction on surface settlement

open access: yes地质科技通报, 2022
Pipe jacking construction is widely used in urban construction due to non-excavation or less excavation, but the surface settlement caused by pipe jacking construction cannot be ignored. Relying on a pipe jacking project of a power tunnel in Foshan City,
Letian Wang   +2 more
doaj   +1 more source

Understanding the Influence of Building Loads on Surface Settlement: A Case Study in the Central Business District of Beijing Combining Multi-Source Data

open access: yesRemote Sensing, 2021
In metropolitan areas, the static load of high-rise buildings may result in uneven settlement, which seriously threatens residents’ living safety. Studying the response relationship between the additional stress of high-rise buildings and foundation ...
Fengkai Li   +5 more
doaj   +1 more source

Consolidation Settlement of a Soil with an Impervious Top Surface [PDF]

open access: yesJournal of Applied Physics, 1941
An investigation is made of the consolidation settlement for a soil whose top surface is impervious and loaded uniformly on an infinite strip of constant width. The settlement under the load is accompanied by considerable swelling of the unloaded area on both sides of the load.
Biot, Maurice A., Clingan, F. M.
openaire   +2 more sources

Volume Contraction in Shallow Sediments: Discrete Element Simulation

open access: yesApplied Sciences, 2022
Displacements induced by mineral dissolution and subsurface volume contraction affect overlying soils. In this study, we examine the consequences of mass loss or volume contraction at shallow depths using a discrete element method.
Minsu Cha, J. Carlos Santamarina
doaj   +1 more source

Influence of reinforcement range on ground settlement of shallow-buried super-large-diameter shield tunneling in soft soils

open access: yesYantu gongcheng xuebao, 2021
The shield method is the main construction method for the excavation of underground tunnels in soft soil areas, but the impact of shallow-buried super-large-diameter shield tunneling in soft soils on ground settlement needs to be further studied.
HUANG Chang-fu 1, LONG Wen 2, SONG Qi-long 3, LI Dong 4, SU Dong 3, 5, CHEN Xiang-sheng 3, 5
doaj   +1 more source

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