Results 21 to 30 of about 45,835 (296)

Risk Analysis of Harmful Gas in Deep Buried Long Tunnel Construction [PDF]

open access: yesProceedings of the International Conference on Advances in Energy, Environment and Chemical Engineering, 2015
The emergence of harmful gas will bring serious difficulties to the tunnel construction, improper handling can easily lead to accidents. In order to evaluate the possibility of harmful gas in the tunnel, the basic characteristics of harmful gas in tunnel are analyzed from three aspects, that is spatial distribution, inflammable and explosive property ...
Caihong Jia, Yanxi Zhao
openaire   +1 more source

Identification of the karst water flow system and its application in the tunnel line selection of water diversion projects

open access: yes地质科技通报, 2022
A critical water diversion project may face serious water inrush problems during tunnel construction when it crosses the carbonate rock formations of Julongshan syncline.Characteristics of karst water flow system in Julongshan syncline were identified by
Huiming Yan   +4 more
doaj   +1 more source

Inversion and Analysis of the Initial Ground Stress Field of the Deep-Buried Tunnel Area

open access: yesApplied Sciences, 2022
The detailed analysis of the initial ground stress distribution law is an important work for the safety of tunnel construction and operation. Especially, the high ground stress phenomenon in the deep-buried tunnel area is common, which has a great impact
Rongsen Yu   +4 more
doaj   +1 more source

MoM-SO: a Complete Method for Computing the Impedance of Cable Systems Including Skin, Proximity, and Ground Return Effects [PDF]

open access: yes, 2015
The availability of accurate and broadband models for underground and submarine cable systems is of paramount importance for the correct prediction of electromagnetic transients in power grids.
Patel, Utkarsh R., Triverio, Piero
core   +1 more source

Prediction of Collapse Scope of Deep-Buried Tunnels Using Pressure Arch Theory [PDF]

open access: yesMathematical Problems in Engineering, 2016
Tunnel collapse remains a serious problem in practice. Effective prediction methods on tunnel collapse are necessary for tunnel engineering. In this study, systematic study on the pressure arch was presented to predict tunnel collapse. Multiple factors under different conditions were considered. First, the pressure arch was described as a certain scope
Yingchao Wang   +4 more
openaire   +1 more source

Hard X-ray standing-wave photoemission insights into the structure of an epitaxial Fe/MgO multilayer magnetic tunnel junction [PDF]

open access: yes, 2019
The Fe/MgO magnetic tunnel junction is a classic spintronic system, with current importance technologically and interest for future innovation. The key magnetic properties are linked directly to the structure of hard-to-access buried interfaces, and the ...
Ciston, J   +17 more
core   +4 more sources

Mechanical behaviors of surrounding rock and supporting structure of shallow-buried unsymmetrical pressure tunnel crossing soil–rock interface

open access: yesFrontiers in Earth Science, 2023
Shallow bias tunnels are sensitive at the entrance section, where the existence of soil–rock interface (SRI) results in more complex deformation of surrounding rock and supporting structure.
Zhinan Hu   +3 more
doaj   +1 more source

Thermal Performance Analysis of an Underground Closed Chamber with Human Body Heat Sources under Natural Convection [PDF]

open access: yes, 2018
In this article, a combined experimental and numerical study has been performed to investigate the thermal performance of a mine refuge chamber (MRC) under natural convection.
Day, Rodney   +4 more
core   +2 more sources

Point Cloud Filtering and Classification Methods for Deeply Buried Irregular Tunnels Based on Geometric Morphology [PDF]

open access: yes长江科学院院报
[Objective] The 3D laser scanning technology is characterized by fast scanning speed, high scanning accuracy, non-contact operation, and minimal influence from the scanning environment, which makes it widely applicable in deep engineering fields. However,
SHI Ying-en
doaj   +1 more source

Monitoring and Analysis of Geotemperature during the Tunnel Construction

open access: yesEnergies, 2022
High geotemperatures are encountered during tunnel construction in areas with complex geological structures, which can seriously affect personnel and equipment in the process of tunnel construction and operation. The Nige tunnel, a deep-buried extra-long
Tao Wen   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy