Journal Article10.1016/j.gete.2022.100335
A novel random angular bend (RAB) algorithm and DEM modeling of thermal cracking responses of sandstone
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TL;DR: In this paper , a random angular bend (RAB) algorithm and overlap detection algorithm are used to simulate sandstone with irregularly shaped mineral particles and the development of crack was obtained and used to evaluate the damage characteristic of sandstone during heating process.
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About: This article is published in Geomechanics for Energy and the Environment. The article was published on 01 Mar 2022. The article focuses on the topics: Cracking & Discrete element method.
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Citations
Microscopic cracking behaviors of rocks under uniaxial compression with microscopic multiphase heterogeneity by deep learning
TL;DR: In this paper , the digital color difference UNet (DCD-UNet)-based deep learning algorithm with 3D reconstruction is proposed to reconstruct the multiphase heterogeneity microstructure models of rocks.
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Investigations on CO2 migration and flow characteristics in sandstone during geological storage based on laboratory injection experiment and CFD simulation
Jingyu Xie,Xianyu Yang,Wei Qiao,Suping Peng,Ye Yue,Qiu Chen,Jihua Cai,Guosheng Jiang +7 more
- 01 Sep 2023
TL;DR: In this paper , the effect of geological and engineering parameters on CO2 migration and flow characteristics in sandstone during geological storage was investigated. And the results enriched the theory of CO2 migrations and flows characteristics during CO2 geological storage.
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Durability Performance of PVA Fiber Cement-Stabilized Macadam
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Application of a Finite-Discrete Element Method Code for Modelling Rock Spalling in Tunnels: The Case of the Lyon-Turin Base Tunnel
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TL;DR: The hybrid finite-discrete element method (FDEM) is successfully applied to model brittle spalling in tunnels. The results are aligned with previous studies and demonstrate the importance of accurately designed support systems to prevent falling blocks.
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References
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TL;DR: In this article, the authors performed uniaxial compressive strength testing of Hawkesbury sandstone at various temperatures between 25 and 950°C to explore the mechanical response of the sandstone to significant changes in temperature for enhanced geothermal energy systems, nuclear waste disposal and underground coal gasification.
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A DEM model for soft and hard rocks: Role of grain interlocking on strength
TL;DR: In this article, the authors show that increasing the degree of interlocking between the discrete elements which represent the rock medium, in addition to enhancing the UCS/TS ratio, results in a non-linear failure envelop characteristic of low porous rocks.
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Mineralogical and colour changes of quartz sandstones by heat
Mónika Hajpál,Ákos Török +1 more
TL;DR: In this paper, seven German and three Hungarian monumental sandstones have been tested in laboratory conditions to analyse the effect of heat on their mineral transformations and porosity, showing that porosity increase is related to micro-cracking at grain boundaries and within the grains (at and above 750°C) and mineral transformations.
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Effect of temperature and pressure on the thermal conductivity of sandstone
TL;DR: In this paper, the effect of structure (size, shape, and distribution of the pores), porosity, and mineralogical composition on temperature and pressure dependences of the effective thermal conductivity (ETC) of sandstone was discussed.
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