Results 71 to 80 of about 23,842 (308)
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
Critical expansion points: Mechanical signs of surrounding rock instability
Deep Underground Science and Engineering, EarlyView.This study proposes the Rock Bearing‐Expansion Model (RockBEM) with critical expansion points (CEPs) to quantify post‐peak damage stages in deep‐buried rock masses via plane strain compression test (PSCT). CEP hysteresis&interval ratios reveal bearing performance dynamics and failure severity, advancing mechanistic insights into deep underground rock ...
Jiaqi Wen +4 more
wiley +1 more source
Demiryolunun Stratejik Önemi ve Erken Cumhuriyet Döneminde Demiryolu Siyaseti
Vakanüvis Uluslararası Tarih Araştırmaları Dergisi, 2016 Bu çalışmada, demiryollarının stratejik açıdan önemi ve Geç Osmanlı-Erken Cumhuriyet dönemlerinde demiryollarının geçirdiği evreler incelenmiştir. Tekerleğin icadı ile başlayan süreç, atlı arabalarla devam etmiş ve 17. yüzyıl sonrasında buharlı makinenin
Mustafa Yücel, Mustafa Taşar
doaj +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
Seismic analysis and design of tunnels within fault ground: A review
Deep Underground Science and Engineering, EarlyView.The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang +6 more
wiley +1 more source
Desindustrialization in the metropolis of São Paulo - Água Branca case
GEOUSP: Espaço e Tempo, 2001 This article tries to discuss some subjects on the theme of desindustrialization in the metropolis of São Paulo. Desindustrialization is a recent process and its understanding is linked so to an integrated group of elements related to changes in the ...
Aluísio Wellichan Ramos
doaj +1 more source
Carbon emission assessment of tunnel infrastructures: From construction to operation
Deep Underground Science and Engineering, EarlyView.This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long +4 more
wiley +1 more source
Plant adaptive strategies respond to environmental change across European grassland habitats
Ecography, EarlyView.Grassland ecosystems are facing rapid and ongoing change driven by intensified land‐use and accelerated climate change, highlighting the urgent need to understand their potential adaptation and response to environmental change. We analyzed data from 52 980 vegetation plots spanning all major grassland habitats in Europe (including alpine, rocky, sandy,
Xiao‐Peng Tan +21 more
wiley +1 more source