The Meso-Analysis of the Rock-Burst Debris of Rock Similar Material Based on SEM

In order to explore the specimen failure characteristics during rock-burst under different gradient stress conditions, in this paper, a novel experimental technique was proposed; a common series of tests under two gradient stress paths were conducted on rock similar material specimens using the true...

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Main Authors: Manqing Lin, Lan Zhang, Xiqi Liu, Yuanyou Xia, Jiaqi He, Xiaosu Ke
Format: Article
Language:English
Published: Wiley 2020-01-01
Series:Advances in Civil Engineering
Online Access:http://dx.doi.org/10.1155/2020/9168908
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author Manqing Lin
Lan Zhang
Xiqi Liu
Yuanyou Xia
Jiaqi He
Xiaosu Ke
author_facet Manqing Lin
Lan Zhang
Xiqi Liu
Yuanyou Xia
Jiaqi He
Xiaosu Ke
author_sort Manqing Lin
collection DOAJ
description In order to explore the specimen failure characteristics during rock-burst under different gradient stress conditions, in this paper, a novel experimental technique was proposed; a common series of tests under two gradient stress paths were conducted on rock similar material specimens using the true-triaxial gradient and hydraulic-pneumatic combined test apparatus. And plaster was used as the rock similar material. In the experimental process, several rock-burst debris with area sizes of 100 mm2 were collected, and the fractal dimensions of typical detrital section crystal contours were analyzed and calculated using a scanning electron microscopy (SEM) method. The results showed that the specimens’ failure characteristics which had been induced by the two gradient stress processes were various. Also, the mesoscopic morphology of the rock-burst detrital section had effectively reflected its macroscopic failure characteristics. It was found that the fractal dimensions of the crystal contours of the specimen’s detrital section had fractal characteristics, and the box-counting dimension based on the SEM image could quantitatively describe the rock-burst failure characteristics. Furthermore, under the same magnification, the fractal dimensions of the crystal contours of the splitting failures were found to be relatively smaller than those of the shearing failures.
format Article
id doaj-art-760ee43570a54057bf3ce748e233aed7
institution Kabale University
issn 1687-8086
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language English
publishDate 2020-01-01
publisher Wiley
record_format Article
series Advances in Civil Engineering
spelling doaj-art-760ee43570a54057bf3ce748e233aed72025-02-03T01:27:25ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/91689089168908The Meso-Analysis of the Rock-Burst Debris of Rock Similar Material Based on SEMManqing Lin0Lan Zhang1Xiqi Liu2Yuanyou Xia3Jiaqi He4Xiaosu Ke5School of Xingfa Mining Engineering, Wuhan Institute of Technology, Wuhan, Hubei 430062, ChinaSchool of Xingfa Mining Engineering, Wuhan Institute of Technology, Wuhan, Hubei 430062, ChinaSchool of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, Hubei 430070, ChinaSchool of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, Hubei 430070, ChinaSchool of Xingfa Mining Engineering, Wuhan Institute of Technology, Wuhan, Hubei 430062, ChinaSchool of Xingfa Mining Engineering, Wuhan Institute of Technology, Wuhan, Hubei 430062, ChinaIn order to explore the specimen failure characteristics during rock-burst under different gradient stress conditions, in this paper, a novel experimental technique was proposed; a common series of tests under two gradient stress paths were conducted on rock similar material specimens using the true-triaxial gradient and hydraulic-pneumatic combined test apparatus. And plaster was used as the rock similar material. In the experimental process, several rock-burst debris with area sizes of 100 mm2 were collected, and the fractal dimensions of typical detrital section crystal contours were analyzed and calculated using a scanning electron microscopy (SEM) method. The results showed that the specimens’ failure characteristics which had been induced by the two gradient stress processes were various. Also, the mesoscopic morphology of the rock-burst detrital section had effectively reflected its macroscopic failure characteristics. It was found that the fractal dimensions of the crystal contours of the specimen’s detrital section had fractal characteristics, and the box-counting dimension based on the SEM image could quantitatively describe the rock-burst failure characteristics. Furthermore, under the same magnification, the fractal dimensions of the crystal contours of the splitting failures were found to be relatively smaller than those of the shearing failures.http://dx.doi.org/10.1155/2020/9168908
spellingShingle Manqing Lin
Lan Zhang
Xiqi Liu
Yuanyou Xia
Jiaqi He
Xiaosu Ke
The Meso-Analysis of the Rock-Burst Debris of Rock Similar Material Based on SEM
Advances in Civil Engineering
title The Meso-Analysis of the Rock-Burst Debris of Rock Similar Material Based on SEM
title_full The Meso-Analysis of the Rock-Burst Debris of Rock Similar Material Based on SEM
title_fullStr The Meso-Analysis of the Rock-Burst Debris of Rock Similar Material Based on SEM
title_full_unstemmed The Meso-Analysis of the Rock-Burst Debris of Rock Similar Material Based on SEM
title_short The Meso-Analysis of the Rock-Burst Debris of Rock Similar Material Based on SEM
title_sort meso analysis of the rock burst debris of rock similar material based on sem
url http://dx.doi.org/10.1155/2020/9168908
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