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Experimental studies on the effects of bolt parameters on the bearing characteristics of reinforced rock
Roadways supported by bolts contain support structures that are built into the rock surrounding the roadway, referred to as reinforced rocks in this paper. Using physical model simulation, the paper investigates the bearing characteristics of the reinforced rock under different bolt parameters with...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer International Publishing
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4920741/ https://www.ncbi.nlm.nih.gov/pubmed/27386315 http://dx.doi.org/10.1186/s40064-016-2580-z |
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author | Cheng, Liang Zhang, Yidong Ji, Ming Zhang, Kai Zhang, Minglei |
author_facet | Cheng, Liang Zhang, Yidong Ji, Ming Zhang, Kai Zhang, Minglei |
author_sort | Cheng, Liang |
collection | PubMed |
description | Roadways supported by bolts contain support structures that are built into the rock surrounding the roadway, referred to as reinforced rocks in this paper. Using physical model simulation, the paper investigates the bearing characteristics of the reinforced rock under different bolt parameters with incrementally increased load. The experimental results show that the stress at the measurement point inside the structure varies with the kinetic pressure. The stress increases slowly as the load is initially applied, displays accelerated growth in the middle of the loading application, and decreases or remains constant in the later stage of the loading application. The change in displacement of the surrounding rock exhibits the following characteristics: a slow increase when the load is first applied, accelerated growth in the middle stage, and violent growth in the later stage. There is a good correlation between the change in the measured stress and the change in the surrounding rock displacement. Increasing the density of the bolt support and the length and diameter of the bolt improves the load-bearing performance of the reinforced rock, including its strength, internal peak stress, and residual stress. Bolting improves the internal structure of the surrounding rocks, and the deterioration of the surrounding rock decreases with the distance between the bolt supports. |
format | Online Article Text |
id | pubmed-4920741 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Springer International Publishing |
record_format | MEDLINE/PubMed |
spelling | pubmed-49207412016-07-06 Experimental studies on the effects of bolt parameters on the bearing characteristics of reinforced rock Cheng, Liang Zhang, Yidong Ji, Ming Zhang, Kai Zhang, Minglei Springerplus Research Roadways supported by bolts contain support structures that are built into the rock surrounding the roadway, referred to as reinforced rocks in this paper. Using physical model simulation, the paper investigates the bearing characteristics of the reinforced rock under different bolt parameters with incrementally increased load. The experimental results show that the stress at the measurement point inside the structure varies with the kinetic pressure. The stress increases slowly as the load is initially applied, displays accelerated growth in the middle of the loading application, and decreases or remains constant in the later stage of the loading application. The change in displacement of the surrounding rock exhibits the following characteristics: a slow increase when the load is first applied, accelerated growth in the middle stage, and violent growth in the later stage. There is a good correlation between the change in the measured stress and the change in the surrounding rock displacement. Increasing the density of the bolt support and the length and diameter of the bolt improves the load-bearing performance of the reinforced rock, including its strength, internal peak stress, and residual stress. Bolting improves the internal structure of the surrounding rocks, and the deterioration of the surrounding rock decreases with the distance between the bolt supports. Springer International Publishing 2016-06-24 /pmc/articles/PMC4920741/ /pubmed/27386315 http://dx.doi.org/10.1186/s40064-016-2580-z Text en © The Author(s) 2016 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
spellingShingle | Research Cheng, Liang Zhang, Yidong Ji, Ming Zhang, Kai Zhang, Minglei Experimental studies on the effects of bolt parameters on the bearing characteristics of reinforced rock |
title | Experimental studies on the effects of bolt parameters on the bearing characteristics of reinforced rock |
title_full | Experimental studies on the effects of bolt parameters on the bearing characteristics of reinforced rock |
title_fullStr | Experimental studies on the effects of bolt parameters on the bearing characteristics of reinforced rock |
title_full_unstemmed | Experimental studies on the effects of bolt parameters on the bearing characteristics of reinforced rock |
title_short | Experimental studies on the effects of bolt parameters on the bearing characteristics of reinforced rock |
title_sort | experimental studies on the effects of bolt parameters on the bearing characteristics of reinforced rock |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4920741/ https://www.ncbi.nlm.nih.gov/pubmed/27386315 http://dx.doi.org/10.1186/s40064-016-2580-z |
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