Results 81 to 90 of about 9,272,939 (290)

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, Wout Broere, Xuehui Zhang, Tian Xia, Richard de Nijs   +4 more
wiley   +1 more source

In-vehicle railway level crossing warning systems : can intelligent transport systems deliver? [PDF]

, 2014
Intelligent Transport System (ITS) technology is seen as a cost-effective way to increase the conspicuity of approaching trains and the effectiveness of train warnings at level crossings by providing an in-vehicle warning of an approaching train.
Galea, Vincent, Wayth, Rod, Nelson-Furnell, Peter, Wullems, Christian   +3 more
core  

Energy evolution‐based damage quantification and failure prediction of fault zone tunnel lining concrete: A novel acoustic emission–strain energy coupling approach

Deep Underground Science and Engineering, EarlyView.
This study investigates the damage evolution and failure mechanisms of tunnel lining concrete in active fault zones through uniaxial compression tests integrated with acoustic emission (AE) monitoring. A strong linear correlation is identified between the AE cumulative absolute energy and the total strain energy, providing a reliable energy‐based ...
Shuaida Zhu, Dongming Zhang, Mingliang Zhou, Shengjun Duo, Hongwei Huang   +4 more
wiley   +1 more source

Careful Crossing Campaign, Cross Crossings Cautiously, June 1st - Sept. 30th 1922, American Railway Association

, 1922
CAREFUL CROSSING CAMPAIGN, CROSS CROSSINGS CAUTIOUSLY, JUNE 1ST - SEPT. 30TH 1922, AMERICAN RAILWAY ASSOCIATION Careful Crossing Campaign, Cross Crossings Cautiously, June 1st - Sept. 30th 1922, American Railway Association ( -
American Railway Association
core   +1 more source

Bayesian Network Modeling Applied on Railway Level Crossing Safety [PDF]

, 2017
Nowadays, railway operation is characterized by increasingly high speed and large transport capacity. Safety is the core issue in railway operation, and as witnessed by accident/incident statistics, railway level crossing (LX) safety is one of the most critical points in railways.
Liang, Ci, Ghazel, Mohamed, Cazier, Olivier, Bouillaut, Laurent, El Koursi, El Miloudi   +4 more
openaire   +3 more sources

Developing a universal tunnel span classification from global tunnel databases

Deep Underground Science and Engineering, EarlyView.
A universal tunnel span classification system is introduced that incorporates tunnel span, cross‐sectional area, typical tunnel types, and intended uses. Representative flatness ratio values are also provided for each span class. The classification is derived from a comprehensive database of 450 tunnel profiles from 47 countries.
Simon Heru Prassetyo, Inzagi Suhendar, Semmy Andrew Anugerah Djawa Tagi, Bonifacio Bondan Satryojati, Dzakwan Naufal Pratama, Yeremia Sintong Damero, Yudhidya Wicaksana, Erwin Lim, Ridho Kresna Wattimena   +8 more
wiley   +1 more source

Optimizing hybrid renewable energy based automated railway level crossing in Bangladesh: Techno-economic, emission and sensitivity analysis

Energy Conversion and Management: X
The railway system in Bangladesh, particularly the level crossing system, needs significant advancements, including a shift towards using renewable energy to power these crossings.
Zia Ul Islam, M.S. Hossain Lipu, Tahia F. Karim, Abu M. Fuad, M.M. Naushad Ali, ASM Shihavuddin, Ahmed Al Mansur   +6 more
doaj   +1 more source

Extraction of Critical Scenarios in a Railway Level Crossing Control System

International Journal of Computers Communications & Control, 2007
This paper deals with the safety of the level crossing control system. We propose one way of the safety evaluation witch consist on the extraction of feared scenarios in the Petri net model of the system. We use ESA_PetriNet tool (Extraction Scenarios & Analyzer by Petri Net model) that was developed in the aim of extraction of feared scenarios
Malika Medjoudj, Pascal Yim
openaire   +3 more sources

A view of a timber trestle railway bridge crossing the King River, Tasmania, constructed by Mount Lyell Mining and Railway Co. Ltd.

, 2016
This record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/227306A ...
Mount Lyell Mining And Railway Co. Ltd
core  

Damage Characteristics and Stress Distribution Law of Overburden Rock in Multiple Mining of Close Coal Seams

Energy Science &Engineering, EarlyView.
This study on close coal seams shows that multi‐seam mining increases the height of the fractured zone from approximately 26 m (single upper‐seam mining) to about 49 m. When the lower seam is mined after the extraction of the upper seam, the heights of both the caved zone and the fractured zone increase by approximately two times.
Xiaoyu Wu, Lei Guo, Zedong Sun, Xiaowei Wu, Nan Zhang   +4 more
wiley   +1 more source