Results 1 to 10 of about 270,048 (167)

Research on an Evaluation Method for the Adaptability of TBM Tunnelling

Applied Sciences (Switzerland), 2022
When a TBM carries out tunnelling in complex strata, there is often low tunnelling efficiency and an increase in tunnelling costs due to the improper selection of tunnelling parameters, the wrong estimation of geological conditions, or adverse geology ...
Zhenliang Zhou, Zonglin Li, Zhongsheng Tan   +2 more
exaly   +3 more sources

The Optimization of Waterproof and Drainage Design and an Evaluation of the Structural Safety of Tunnels in Weak Watery Strata

Buildings, 2023
The surrounding rock and high water pressure in weak watery strata have adverse effects on the mechanical properties of tunnel support structures.
Zelin Zhou, Xingyu Zhu, Chuantian Zheng, Zhiqiang Zhang, Heng Zhang   +4 more
doaj   +1 more source

Estimating Penetration Rate of Excavation Machine Using Geotechnical Parameters and Neural Networks in Tabriz Metro [PDF]

Analytical and Numerical Methods in Mining Engineering, 2023
In this study, the penetration rate of the excavation machine in Tabriz Metro Line 2 using geotechnical parameters and neural networks is estimated. For this purpose, through comprehensive analysis, including borehole drilling, field and laboratory tests,
Samaneh Khodaee Ashestani, Hamid Chakeri, Mohammad Darbor, Erfan Khoshzaher, Seyyed Shahab Eddin Bazargan   +4 more
doaj   +1 more source

Elastic Behavior of Transversely Isotropic Cylindrical Rock Samples under Uniaxial Compression Considering Ideal and Frictional Boundary Conditions

Applied Sciences, 2023
Conceptualizing sophisticated measurement set-ups as well as testing and evaluation procedures for laboratory experiments on anisotropic rocks requires a basic understanding of the potential specimen behavior.
Manuel Bernhard Winkler, Thomas Frühwirt, Thomas Marcher   +2 more
doaj   +1 more source

Statistical approach to the process of tunnel ionisation of impurity centres near the heterointerface

Конденсированные среды и межфазные границы, 2021
To date, the processes of tunnel ionisation of impurities near the interface between two different semiconductors have been comprehensively studied. The most important parameters of the contact electron states of impurities have been determined. However,
Temur T. Muratov
doaj   +1 more source

A More Comprehensive Way to Analyze Foam Stability for EPB Tunnelling—Introduction of a Mathematical Characterization

Geosciences, 2022
In the tunnelling industry, a large share of the market is occupied by EPB (Earth Pressure Balance) machines. To operate this kind of machine, a radical change in the rheological behaviour of the excavated soil must be performed, and this is achieved by ...
Andrea Carigi, Carmine Todaro, Daniele Martinelli, Daniele Peila   +3 more
doaj   +1 more source

Reliability analysis of ground movement in tunnelling in spatially variable soil using equivalent parameters

Frontiers in Earth Science, 2022
The evaluation of the ground movement induced by tunnelling is of vital importance for the tunnel construction and the safety of the adjacent facilities.
Wenyu Yang, Hui Liu, Junjie Zheng, Junjie Zheng, Lan Cui, Lan Cui   +5 more
doaj   +1 more source

Anti-Collision Systems in Tunneling to Improve Effectiveness and Safety in a System-Quality Approach: A Review of the State of the Art

Infrastructures, 2021
Tunnelling and underground construction operations are often characterized by critical safety issues mainly due to poor visibility and blind spots around large vehicles and equipment.
Mario Patrucco, Enrico Pira, Salvatore Pentimalli, Rebecca Nebbia, Achille Sorlini   +4 more
doaj   +1 more source

Tunnelling Induced ground settlement considering soil variability [PDF]

International Journal of Mining and Geo-Engineering, 2023
Ground settlement need to be predicted well so that necessary precautionary measures could be adopted. Ground deformation behavior due to tunnel construction in inhomogeneous soil has been studied in the past few decades by many researchers.
Gouri Krishna, V B Maji
doaj   +1 more source

The hydrogen bond rotation of confined water affected by quantum resonance tunnelling

Frontiers in Physics, 2022
In this work, we report quantum tunnelling effects on the confined water chain flipping, different from the spatial size and even electronic correlation effects of the confinement environment.
Xinrui Yang, Le Jin, Le Jin, Yu Zhu, Zhiyuan Zhang, Rui Liu, Zhigang Wang, Zhigang Wang   +7 more
doaj   +1 more source