Results 11 to 20 of about 2,521,798 (304)

A comparative study of stability characteristics of mahua and jatropha biodiesel and their blends

open access: yesJournal of King Saud University: Engineering Sciences, 2019
Now-a-days biodiesel is gaining attention for its positive impact on the environment. The vegetable oils are major sources of biodiesel. For biodiesel programme in India, jatropha (Jatropha curas) has been identified as one of the most suitable tree ...
N. Acharya   +3 more
doaj   +1 more source

Case Study on Safety Assessment of Rockfall and Splash Stone Protective Structures for Secondary Excavation of Highway Slope

open access: yesAdvances in Civil Engineering, 2021
Rockfall occurs on the excavation of the slope of highway resulting from excavated rock pieces. In order to solve the problem of rockfall protection during the disturbance of high slope secondary excavation, rockfall analysis program RocFall was used to ...
Guan Jiang   +6 more
doaj   +1 more source

Analysis for bearing performance and construction mechanical behavior of supporting structure for the large cross-section tunnel by half bench CD method.

open access: yesPLoS ONE, 2021
Based on the engineering practice of large cross-section highway tunnel, this paper reveals the space-time coordinated evolution law of the construction mechanical characteristics and deformation distribution of the support structure in the construction ...
Rui Zhao
doaj   +1 more source

Mechanical behaviors and damage characteristics of excavated jointed rocks within 3D printed structures

open access: yesJournal of Materials Research and Technology, 2023
The presence of structural planes in rock masses reduces their mechanical properties and greatly affects their failure mode, resulting in physical and mechanical anisotropy.
Haihua Zhu   +5 more
doaj   +1 more source

Analysis on Characteristics of Surrounding Rocks of Roadway and Bearing Structure Based on Stress Regulation

open access: yesAdvances in Civil Engineering, 2021
To address the prominent status of great deformation and difficult maintenance of the roadway under high stresses, this study investigated the mechanical characteristics of surrounding rocks and bearing structural stability in a roadway under adjustment ...
Ruofei Zhang   +7 more
doaj   +1 more source

Prevention of Oil Spills During Excavation Work Using Electromagnetic Sensors [PDF]

open access: yesE3S Web of Conferences, 2021
This paper presents an analysis of solution to the problems associated with mechanical damage to pipelines. A method of preventing accidental oil spills during excavation using electromagnetic sensors is proposed.
Rybin A.S.   +3 more
doaj   +1 more source

To improve the contact adaptability of mechanical roof support [PDF]

open access: yesE3S Web of Conferences, 2021
The article proposes a constructive technical solution to increase the contact adaptivity of the mechanical roof support. The developed solution of the mechanized support section is able to adapt to changing mining and geological conditions in the ...
Babyr N., Babyr K.
doaj   +1 more source

Application of excavation compensation method for constructing shallowly-buried super-large span subway tunnel

open access: yesCase Studies in Construction Materials, 2023
Stress loss at the excavation face, stemming from underground chamber excavation, is the primary culprit behind geotechnical accidents. Implementing timely stress compensation is vital to control potential instability or failure in the surrounding rock ...
Wenhui Bian   +3 more
doaj   +1 more source

Analysis of Mechanical Excavation Characteristics by Pre-Cutting Machine Based on Linear Cutting Tests

open access: yesApplied Sciences, 2023
Mechanical methods of tunnel excavation are widely used because of their high excavation output, and the selection of appropriate technology depends on ground composition and project-related features.
Han-eol Kim   +3 more
doaj   +1 more source

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