Results 61 to 70 of about 14,285 (229)
True triaxial test and failure criterion of coal gangue concrete
Meitan xuebaoIn view of the pollution caused by the large storage of coal gangue and the shortage of natural aggregate in concrete, using coal gangue as coarse aggregate is a reasonable way to solve the above problems.
Weiping ZHAO +5 more
doaj +1 more source
Journal of Rock Mechanics and Geotechnical Engineering, 2023 In this context, a testing system to understand rock fracturing processes induced by different dynamic disturbances under true triaxial compression was developed. The system is mainly composed of a static loading subsystem, a dynamic loading subsystem, a
Xia-Ting Feng +3 more
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Deep Underground Science and Engineering, EarlyView.The present study uses the Modified Mohr‐Coulomb true‐triaxial failure criterion (MMC_TT), which predicts the strength of rock better than the MGC criterion in laboratory true‐triaxial tests to overcome the limitations. Moreover, based on the data from previously published five vertical wells in the Krishna‐Godavari basin (K‐G basin), an empirical ...
Ravindra K. Burnwal, Aditya Singh
wiley +1 more source
The formation of CDM haloes II: collapse time and tides [PDF]
, 2014 We use two cosmological simulations of structure formation in the LambdaCDM scenario to study the evolutionary histories of dark-matter haloes and to characterize the Lagrangian regions from which they form. We focus on haloes identified at redshift z_id=
Borzyszkowski, Mikolaj +2 more
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Strain‐based modeling and analysis for rock blasting and geomechanics applications
Deep Underground Science and Engineering, EarlyView.This paper introduces a novel strain‐based modeling approach for blasting and geomechanical applications, using measurable variables like particle velocity, strain, and displacement. By bypassing complex constitutive relations, strain‐based models capture critical blasting trends and full‐blast design parameters with minimal calibration.
Ruilin Yang
wiley +1 more source
Fractal and FractionalTo study the fractal characteristics and energy evolution of sandstones under true three-dimensional stress states, a true triaxial compression test and a cyclic loading and unloading test of sandstone specimens under different loads were carried out ...
Qihang Zhang +2 more
doaj +1 more source
Advances in Materials Science and Engineering, 2015 Joints and cracks are frequently encountered in underground rock mass. During the process of tunnel excavations or other underground construction, the rock will be exposed suddenly, and such sudden unloading process will cause crack expansion and ...
Meng Wang, Zheming Zhu, Jun Xie
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Deep Underground Science and Engineering, EarlyView.In this work, we propose an improved particle swarm optimization (PSO) algorithm and develop an improved PSO‐relevance vector machine (RVM) model as a substitute for traditional true‐triaxial testing. The model's high prediction accuracy was validated through comparisons with two other machine learning methods and five three‐dimensional Hoek–Brown type
Qi Zhang +4 more
wiley +1 more source
Research on Coal Mechanical Properties Based on True Triaxial Loading and Unloading Experiment
Advances in Civil Engineering, 2021 To study the safety issues caused by coal mine excavation, self-developed simulation of earth interior atmosphere and sound test system was used to perform true triaxial loading and unloading tests of coal.
Yanyan Peng +4 more
doaj +1 more source
Modelling the engineering behaviour of fibrous peat formed due to rapid anthropogenic terrestrialization in Hangzhou, China [PDF]
, 2016 This is an accepted manuscript of an article published by Elsevier in Engineering Geology on 21/10/2016, available online: https://doi.org/10.1016/j.enggeo.2016.10.009 The accepted version of the publication may differ from the final published version ...
Cai, Y.Q. +5 more
core +1 more source