Results 21 to 30 of about 87,679 (264)

Classification Method and Application of Rock Fracture Ability by Supercritical CO2 Blasting

open access: yesShock and Vibration, 2022
In order to study the fracture ability classification of rock mass under the cracking action of supercritical CO2 phase transition, based on the classification theory of rock mass in blasting engineering, an analytic hierarchy process (AHP)-entropy ...
Xiaohong Zhu, Jianhong Jia, Zhongwei Cai
doaj   +1 more source

Revisiting rock classification to estimate rock mass properties

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2019
This paper presents the results of ongoing research carried out by the author exploring methods to provide a more robust estimate of rock mass properties specifically for use in tunnel design.
Robert Bertuzzi
doaj   +1 more source

Study on Interfacial Crack Initiation of Jointed Rock Mass Based on Interface Fracture Mechanics

open access: yesFractal and Fractional, 2022
The fracture of interfacial crack is the main failure type of jointed rock mass. Therefore, it is very important to study the interfacial fracture of jointed rock mass. For the similarity of jointed rock mass and composites (all are composed by two parts,
Wei Gao, Xin Chen, Chengjie Hu
doaj   +1 more source

A Rock Mass Classification Method for Tuff Tunnel Based on the High-Pressure Gas Expansion Method

open access: yesJournal of Engineering, 2023
A precise rock mass grade result is crucial for directing the tunnel excavation engineering design. A novel rock mass classification method for tuff tunnel based on the high-pressure gas expansion method (HPGEM) was proposed, which was primarily built on
Huaide Peng   +4 more
doaj   +1 more source

Study on the Creep and Fracture Evolution Mechanism of Rock Mass with Weak Interlayers

open access: yesAdvances in Materials Science and Engineering, 2022
To study the influence of weak interlayers on the creep failure characteristics of rock masses, based on the continuous-discontinuous method (CDEM), the uniaxial compression creep experiments of rock masses containing weak layers were numerically ...
Na Zhao   +3 more
doaj   +1 more source

Assessment of block size distribution in fractured rock mass and its influence on rock mass mechanical behavior

open access: yesAIP Advances, 2020
The response of rock mass to engineering activities related to environment greatly depends on the scale of rock mass. Therefore, the scale dependency of rock mechanical behavior under different rock mass conditions is investigated in this research.
Wenli Yao   +2 more
doaj   +1 more source

Multiplexed Detection of Membranous Nephropathy Antigens by Multi-Reaction Monitoring Mass Spectrometry

open access: yesKidney International Reports
Background: Membranous nephropathy (MN) is a leading cause of nephrotic syndrome, driven by an immune response against a target autoantigen. To date, over 30 target antigens have been described in MN, creating the need for multiplex approaches.
Aaron J. Storey   +7 more
doaj   +1 more source

Analysis of the Influence of Surrounding Rock State on Working Performance of Cutting Head in Metal Mining

open access: yesApplied Sciences, 2023
Continuous mining is one of the development goals for metal mines, and the application of coal mining equipment represented by shearers provides a reference for continuous mining. However, rock in metal mines is generally harder than coal, making cutting
Weipeng Xu   +6 more
doaj   +1 more source

Performance improvement of nanocolloidal silica-aluminate cement composite grouting materials with organic acids

open access: yesCase Studies in Construction Materials
The combination of nanocolloidal silica and aluminate cement is a potential technical approach to solve the problem of mudstone grouting, but there is a lack of high-performance admixtures to improve early strength and gel time.
Dongjiang Pan   +3 more
doaj   +1 more source

Rock Mass Quality Evaluation Based on Unascertained Measure and Intuitionistic Fuzzy Sets

open access: yesComplexity, 2020
Evaluation of rock mass quality is of great significance to the design and construction of geotechnical engineering. In order to evaluate the quality of engineering rock mass scientifically and deal with the fuzzy information in the rock mass quality ...
Shuliang Wu, Xidong Du, Shan Yang
doaj   +1 more source

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