Fracture Characteristics Analysis of Double-layer Rock Plates with Both Ends Fixed Condition
In order to research on the fracture and instability characteristics of double-layer rock plates with both ends fixed, the three-dimension computational model of double-layer rock plates under the concentrated load was built by using PFC3D technique (three-dimension particle flow code), and the me...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Eastern Macedonia and Thrace Institute of Technology
2014-07-01
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| Series: | Journal of Engineering Science and Technology Review |
| Subjects: | |
| Online Access: | http://www.jestr.org/downloads/Volume7Issue2/fulltext97214.pdf |
| _version_ | 1819291756689096704 |
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| author | S. R. Wang D. F. Xu P. Hagan C. L. Li |
| author_facet | S. R. Wang D. F. Xu P. Hagan C. L. Li |
| author_sort | S. R. Wang |
| collection | DOAJ |
| description | In order to research on the fracture and instability characteristics of double-layer rock plates with both ends fixed, the
three-dimension computational model of double-layer rock plates under the concentrated load was built by using PFC3D
technique (three-dimension particle flow code), and the mechanical parameters of the numerical model were determined
based on the physical model tests. The results showed the instability process of the double-layer rock plates had four
mechanical response phases: the elastic deformation stage, the brittle fracture of upper thick plate arching stage, two
rock-arch bearing stage and two rock-arch failure stage; moreover, with the rock plate particle radius from small to large
change, the maximum vertical force of double rock-arch appeared when the particle size was a certain value. The
maximum vertical force showed an upward trend with the increase of the rock plate temperature, and in the case of the
same thickness the maximum vertical force increased with the increase of the upper rock plate thickness. When the
boundary conditions of double-layer rock plates changed from the hinged support to the fixed support, the maximum
horizontal force observably decreased, and the maximum vertical force showed small fluctuations and then tended
towards stability with the increase of cohesive strength of double-layer rock plates. |
| first_indexed | 2024-12-24T03:43:42Z |
| format | Article |
| id | doaj.art-2fde0a5da27e46989535f567251fb13d |
| institution | Directory Open Access Journal |
| issn | 1791-2377 1791-2377 |
| language | English |
| last_indexed | 2024-12-24T03:43:42Z |
| publishDate | 2014-07-01 |
| publisher | Eastern Macedonia and Thrace Institute of Technology |
| record_format | Article |
| series | Journal of Engineering Science and Technology Review |
| spelling | doaj.art-2fde0a5da27e46989535f567251fb13d2022-12-21T17:16:47ZengEastern Macedonia and Thrace Institute of TechnologyJournal of Engineering Science and Technology Review1791-23771791-23772014-07-01726065Fracture Characteristics Analysis of Double-layer Rock Plates with Both Ends Fixed ConditionS. R. Wang0D. F. Xu1P. Hagan2C. L. Li3School of Civil Engineering and Mechanics, Yanshan University, Qinhuangdao, 066004- China / Opening Laboratory for Deep Mine Construction, Henan Polytechnic University, Jiaozuo, 454003-ChinaSchool of Civil Engineering and Mechanics, Yanshan University, Qinhuangdao, 066004- China School of Mining Engineering, University of New South Wales, Sydney, 2052-Australia School of Civil Engineering and Mechanics, Yanshan University, Qinhuangdao, 066004- China In order to research on the fracture and instability characteristics of double-layer rock plates with both ends fixed, the three-dimension computational model of double-layer rock plates under the concentrated load was built by using PFC3D technique (three-dimension particle flow code), and the mechanical parameters of the numerical model were determined based on the physical model tests. The results showed the instability process of the double-layer rock plates had four mechanical response phases: the elastic deformation stage, the brittle fracture of upper thick plate arching stage, two rock-arch bearing stage and two rock-arch failure stage; moreover, with the rock plate particle radius from small to large change, the maximum vertical force of double rock-arch appeared when the particle size was a certain value. The maximum vertical force showed an upward trend with the increase of the rock plate temperature, and in the case of the same thickness the maximum vertical force increased with the increase of the upper rock plate thickness. When the boundary conditions of double-layer rock plates changed from the hinged support to the fixed support, the maximum horizontal force observably decreased, and the maximum vertical force showed small fluctuations and then tended towards stability with the increase of cohesive strength of double-layer rock plates.http://www.jestr.org/downloads/Volume7Issue2/fulltext97214.pdfRock PlateHinged Rock-ArchInstabilityParticle Flow CodeFixed Support Boundary |
| spellingShingle | S. R. Wang D. F. Xu P. Hagan C. L. Li Fracture Characteristics Analysis of Double-layer Rock Plates with Both Ends Fixed Condition Journal of Engineering Science and Technology Review Rock Plate Hinged Rock-Arch Instability Particle Flow Code Fixed Support Boundary |
| title | Fracture Characteristics Analysis of Double-layer Rock Plates with Both Ends Fixed Condition |
| title_full | Fracture Characteristics Analysis of Double-layer Rock Plates with Both Ends Fixed Condition |
| title_fullStr | Fracture Characteristics Analysis of Double-layer Rock Plates with Both Ends Fixed Condition |
| title_full_unstemmed | Fracture Characteristics Analysis of Double-layer Rock Plates with Both Ends Fixed Condition |
| title_short | Fracture Characteristics Analysis of Double-layer Rock Plates with Both Ends Fixed Condition |
| title_sort | fracture characteristics analysis of double layer rock plates with both ends fixed condition |
| topic | Rock Plate Hinged Rock-Arch Instability Particle Flow Code Fixed Support Boundary |
| url | http://www.jestr.org/downloads/Volume7Issue2/fulltext97214.pdf |
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