Effect of the Interaction between Cavities and Flaws on Rock Mechanical Properties under Uniaxial Compression
Cavities and flaws are common types of defects in rock specimens that have an important impact on the mechanical properties of rockmass. In this paper, cement mortar was used to prefabricate a rock-like specimen with two cavities and a single flaw, and the uniaxial compression test was carried out....
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2019-01-01
|
| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/1242141 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832549081319211008 |
|---|---|
| author | Jianwang Li Yu Zhou Wei Sun Zheng Sun |
| author_facet | Jianwang Li Yu Zhou Wei Sun Zheng Sun |
| author_sort | Jianwang Li |
| collection | DOAJ |
| description | Cavities and flaws are common types of defects in rock specimens that have an important impact on the mechanical properties of rockmass. In this paper, cement mortar was used to prefabricate a rock-like specimen with two cavities and a single flaw, and the uniaxial compression test was carried out. The process of fracture evolution on the specimen surface was obtained by using photography technology. The evolution regularity of a fracture was monitored by utilizing acoustic emission (AE) technology during the process of the specimen failure. Moreover, three-dimensional (3D) tomograms of specimens after uniaxial compression were obtained by using computerized tomography (CT) scanning technology, investigating the development characteristics of microcracks and the distribution of the final macrofractures. The particle flow code in two dimensions (PFC2D) program was used to simulate the mechanical behavior of brittle rock combining with microcrack propagation. The calculated stress-strain curve, AE features, and fracture distribution of the specimen obtained from the PFC2D simulation were relatively consistent with the experimental results. |
| format | Article |
| id | doaj-art-27056f4ede2b495c85416fc6f37c5383 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-27056f4ede2b495c85416fc6f37c53832025-02-03T06:12:07ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422019-01-01201910.1155/2019/12421411242141Effect of the Interaction between Cavities and Flaws on Rock Mechanical Properties under Uniaxial CompressionJianwang Li0Yu Zhou1Wei Sun2Zheng Sun3Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mine, University of Science and Technology Beijing, Beijing 100083, ChinaKey Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mine, University of Science and Technology Beijing, Beijing 100083, ChinaKey Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mine, University of Science and Technology Beijing, Beijing 100083, ChinaKey Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mine, University of Science and Technology Beijing, Beijing 100083, ChinaCavities and flaws are common types of defects in rock specimens that have an important impact on the mechanical properties of rockmass. In this paper, cement mortar was used to prefabricate a rock-like specimen with two cavities and a single flaw, and the uniaxial compression test was carried out. The process of fracture evolution on the specimen surface was obtained by using photography technology. The evolution regularity of a fracture was monitored by utilizing acoustic emission (AE) technology during the process of the specimen failure. Moreover, three-dimensional (3D) tomograms of specimens after uniaxial compression were obtained by using computerized tomography (CT) scanning technology, investigating the development characteristics of microcracks and the distribution of the final macrofractures. The particle flow code in two dimensions (PFC2D) program was used to simulate the mechanical behavior of brittle rock combining with microcrack propagation. The calculated stress-strain curve, AE features, and fracture distribution of the specimen obtained from the PFC2D simulation were relatively consistent with the experimental results.http://dx.doi.org/10.1155/2019/1242141 |
| spellingShingle | Jianwang Li Yu Zhou Wei Sun Zheng Sun Effect of the Interaction between Cavities and Flaws on Rock Mechanical Properties under Uniaxial Compression Advances in Materials Science and Engineering |
| title | Effect of the Interaction between Cavities and Flaws on Rock Mechanical Properties under Uniaxial Compression |
| title_full | Effect of the Interaction between Cavities and Flaws on Rock Mechanical Properties under Uniaxial Compression |
| title_fullStr | Effect of the Interaction between Cavities and Flaws on Rock Mechanical Properties under Uniaxial Compression |
| title_full_unstemmed | Effect of the Interaction between Cavities and Flaws on Rock Mechanical Properties under Uniaxial Compression |
| title_short | Effect of the Interaction between Cavities and Flaws on Rock Mechanical Properties under Uniaxial Compression |
| title_sort | effect of the interaction between cavities and flaws on rock mechanical properties under uniaxial compression |
| url | http://dx.doi.org/10.1155/2019/1242141 |
| work_keys_str_mv | AT jianwangli effectoftheinteractionbetweencavitiesandflawsonrockmechanicalpropertiesunderuniaxialcompression AT yuzhou effectoftheinteractionbetweencavitiesandflawsonrockmechanicalpropertiesunderuniaxialcompression AT weisun effectoftheinteractionbetweencavitiesandflawsonrockmechanicalpropertiesunderuniaxialcompression AT zhengsun effectoftheinteractionbetweencavitiesandflawsonrockmechanicalpropertiesunderuniaxialcompression |