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Creep Characteristics of Layered Rock Masses after Water Absorption Due to Structural Effects

Affected by the “three highs and one disturbance” (high ground pressure, high ground temperature, high permeability pressure, and strong mining disturbance), deep layered rock mass roadways often display large deformations, resulting in accidents and disasters from time to time. This paper aims to s...

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Detalles Bibliográficos
Autores principales: Xu, Huichen, Sun, Xiaoming, Zhang, Yong, Zhao, Chengwei, Miao, Chengyu, Wang, Dong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10002288/
https://www.ncbi.nlm.nih.gov/pubmed/36901062
http://dx.doi.org/10.3390/ijerph20054055
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author Xu, Huichen
Sun, Xiaoming
Zhang, Yong
Zhao, Chengwei
Miao, Chengyu
Wang, Dong
author_facet Xu, Huichen
Sun, Xiaoming
Zhang, Yong
Zhao, Chengwei
Miao, Chengyu
Wang, Dong
author_sort Xu, Huichen
collection PubMed
description Affected by the “three highs and one disturbance” (high ground pressure, high ground temperature, high permeability pressure, and strong mining disturbance), deep layered rock mass roadways often display large deformations, resulting in accidents and disasters from time to time. This paper aims to study creep characteristics of layered rock masses after water absorption due to structural effects, combined with acoustic emission energy and dominant frequency value analysis. Experimental results show that as the water content decreases, the long-term strength of the rock sample increases, and the damage becomes more severe. Under the same water content state conditions, the rock samples with bedding angles of 0°, 30°, and 90° have high long-term strength and undergo severe failure, whereas rock samples with bedding angles of 45° and 60° have low long-term strength and undergo mild failure. Under the same water content, the initial energy release increases with the bedding angle. Under the same water content, the energy release during failure decreases first and then increases with the increasing bedding angle. The initial energy, the cumulative energy, the initial main frequency, and the main frequency at the time of failure tend to decrease with the increase in water content.
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spelling pubmed-100022882023-03-11 Creep Characteristics of Layered Rock Masses after Water Absorption Due to Structural Effects Xu, Huichen Sun, Xiaoming Zhang, Yong Zhao, Chengwei Miao, Chengyu Wang, Dong Int J Environ Res Public Health Article Affected by the “three highs and one disturbance” (high ground pressure, high ground temperature, high permeability pressure, and strong mining disturbance), deep layered rock mass roadways often display large deformations, resulting in accidents and disasters from time to time. This paper aims to study creep characteristics of layered rock masses after water absorption due to structural effects, combined with acoustic emission energy and dominant frequency value analysis. Experimental results show that as the water content decreases, the long-term strength of the rock sample increases, and the damage becomes more severe. Under the same water content state conditions, the rock samples with bedding angles of 0°, 30°, and 90° have high long-term strength and undergo severe failure, whereas rock samples with bedding angles of 45° and 60° have low long-term strength and undergo mild failure. Under the same water content, the initial energy release increases with the bedding angle. Under the same water content, the energy release during failure decreases first and then increases with the increasing bedding angle. The initial energy, the cumulative energy, the initial main frequency, and the main frequency at the time of failure tend to decrease with the increase in water content. MDPI 2023-02-24 /pmc/articles/PMC10002288/ /pubmed/36901062 http://dx.doi.org/10.3390/ijerph20054055 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Xu, Huichen
Sun, Xiaoming
Zhang, Yong
Zhao, Chengwei
Miao, Chengyu
Wang, Dong
Creep Characteristics of Layered Rock Masses after Water Absorption Due to Structural Effects
title Creep Characteristics of Layered Rock Masses after Water Absorption Due to Structural Effects
title_full Creep Characteristics of Layered Rock Masses after Water Absorption Due to Structural Effects
title_fullStr Creep Characteristics of Layered Rock Masses after Water Absorption Due to Structural Effects
title_full_unstemmed Creep Characteristics of Layered Rock Masses after Water Absorption Due to Structural Effects
title_short Creep Characteristics of Layered Rock Masses after Water Absorption Due to Structural Effects
title_sort creep characteristics of layered rock masses after water absorption due to structural effects
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10002288/
https://www.ncbi.nlm.nih.gov/pubmed/36901062
http://dx.doi.org/10.3390/ijerph20054055
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