Results 61 to 70 of about 19,877 (268)
Creep properties and constitutive model of diabase in deep water conveyance tunnels
Deep Underground Science and Engineering, EarlyView.The axial and lateral creep characteristics of diabase were analyzed based on compression creep tests. The nonlinear viscoelastic‐plastic model capable of describing the whole creep process was established based on the fractional derivative and damage theories.
Zhigang Tao +5 more
wiley +1 more source
Formation of the stress-strain state of rail bars during welding with preliminary vertical bending
MATEC Web of Conferences, 2018 The article defines the parameters and working conditions for the final restoration of the integrity of the rail beams of a continuous gauge rail by electrocontact welding, as well as when welding rails with each other when they are elongated in the ...
Shramenko Volodymyr +4 more
doaj +1 more source
Nauka ta progres transportu, 2016 Purpose. Despite the steady increase in the length of sections of continuous welded rail on concrete sleepers, wooden railway sleepers, as one of the options of under-rail bearings, are still operated on a sufficiently large number of areas, in ...
O. M. Darenskiy +3 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.This paper investigates the high‐pressure water jet‐pick combined rock‐breaking mode (HPC), which employs high‐pressure water jets to precut grooves on both sides of the picks. The rock‐breaking patterns and performance of the HPC method are obtained, and the auxiliary rock‐breaking mechanism of water jet grooving is revealed.
Jingjing Lu +6 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.Abstract As tunnel construction advances in lengths and depths, the construction of tunnels in high geothermal environments has become increasingly common, raising significant fire risks. In this study, a 1:20 scale model tunnel test platform was constructed to investigate the effects of a high geothermal environment on fire behavior in tunnels during ...
Xiaoxian Fei +6 more
wiley +1 more source
Integrated approach to the planning of energy consumption by non-traction railway consumers
MATEC Web of Conferences, 2018 Non-traction railway load consumes a significant amount of electricity. Russian Railways supplies electricity not only to its structural units but also to other consumers.
Galkin Alexander +2 more
doaj +1 more source
Problems of Railway Transport Infrastructure Development of the Republic of Sakha (Yakutia)
, 2023 Dmitry Andreev
openalex +1 more source
THEORETICAL BASES OF BALANCED DEVELOPMENT OF RAILWAY TRANSPORT ENTERPRISES [PDF]
, 2020 Hanna Obruch
openalex +1 more source
Deep Underground Science and Engineering, EarlyView.Inspired by spiders, the multilegged walk‐through assembling robot for arc parts achieves high‐precision synchronous control under heavy loads through dual‐layer hydraulic pose dynamics modeling and hierarchical pressure optimization, significantly enhancing shield tunneling assembly efficiency and precision.
Quan Xiao +5 more
wiley +1 more source
Energy Science &Engineering, EarlyView.ABSTRACT Hydrogen (H2) fuel cells are increasingly recognized as a cornerstone technology in the global transition toward clean energy due to their high efficiency and zero‐emission characteristics. This review synthesizes recent progress, challenges, and strategic pathways for the deployment of H2 fuel cells across the transportation, power generation,
Yash Sachin Gupta +5 more
wiley +1 more source