Experimental study on the dynamic rupture of coal and rock caused by high-pressure gas
A special test apparatus has been designed and used to study the effect of high-pressure gas on the deformation and failure of coal and rock. Dynamic ruptures of coal and rock are carried out by gas decompression. The results show that low gas decompression rate only causes deformation of coal speci...
| Main Authors: | , |
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| Format: | Article |
| Language: | zho |
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Institute of Geomechanics, Chinese Academy of Geological Sciences
2021-08-01
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| Series: | Dizhi lixue xuebao |
| Subjects: | |
| Online Access: | https://journal.geomech.ac.cn//article/doi/10.12090/j.issn.1006-6616.2021.27.04.053 |
| _version_ | 1797893829987139584 |
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| author | DING Yanlu YUE Zhongqi |
| author_facet | DING Yanlu YUE Zhongqi |
| author_sort | DING Yanlu |
| collection | DOAJ |
| description | A special test apparatus has been designed and used to study the effect of high-pressure gas on the deformation and failure of coal and rock. Dynamic ruptures of coal and rock are carried out by gas decompression. The results show that low gas decompression rate only causes deformation of coal specimens slightly while high gas decompression rate leads to fracture and outburst phenomenon. The degree of damage of rocks depends on not only the gas decompression rate but also the gas pressure. Violent fragmentation occurs when gas decompression rate and high saturation pressure reach critical values. According to the relationship between the decompressed gas pressure and strain, the critical gas pressures are determined for the fracture and fragmentation of specimens. |
| first_indexed | 2024-04-10T06:59:18Z |
| format | Article |
| id | doaj.art-3fed6e1e59f64bf8a637cb6b32c956d8 |
| institution | Directory Open Access Journal |
| issn | 1006-6616 |
| language | zho |
| last_indexed | 2024-04-10T06:59:18Z |
| publishDate | 2021-08-01 |
| publisher | Institute of Geomechanics, Chinese Academy of Geological Sciences |
| record_format | Article |
| series | Dizhi lixue xuebao |
| spelling | doaj.art-3fed6e1e59f64bf8a637cb6b32c956d82023-02-28T01:27:52ZzhoInstitute of Geomechanics, Chinese Academy of Geological SciencesDizhi lixue xuebao1006-66162021-08-0127464365110.12090/j.issn.1006-6616.2021.27.04.053Experimental study on the dynamic rupture of coal and rock caused by high-pressure gasDING YanluYUE Zhongqi0Department of Civil Engineering, The University of Hong Kong, Hong Kong SAR 999077, ChinaA special test apparatus has been designed and used to study the effect of high-pressure gas on the deformation and failure of coal and rock. Dynamic ruptures of coal and rock are carried out by gas decompression. The results show that low gas decompression rate only causes deformation of coal specimens slightly while high gas decompression rate leads to fracture and outburst phenomenon. The degree of damage of rocks depends on not only the gas decompression rate but also the gas pressure. Violent fragmentation occurs when gas decompression rate and high saturation pressure reach critical values. According to the relationship between the decompressed gas pressure and strain, the critical gas pressures are determined for the fracture and fragmentation of specimens.https://journal.geomech.ac.cn//article/doi/10.12090/j.issn.1006-6616.2021.27.04.053gas decompressiondeformationfracturefragmentationcritical gas pressure |
| spellingShingle | DING Yanlu YUE Zhongqi Experimental study on the dynamic rupture of coal and rock caused by high-pressure gas Dizhi lixue xuebao gas decompression deformation fracture fragmentation critical gas pressure |
| title | Experimental study on the dynamic rupture of coal and rock caused by high-pressure gas |
| title_full | Experimental study on the dynamic rupture of coal and rock caused by high-pressure gas |
| title_fullStr | Experimental study on the dynamic rupture of coal and rock caused by high-pressure gas |
| title_full_unstemmed | Experimental study on the dynamic rupture of coal and rock caused by high-pressure gas |
| title_short | Experimental study on the dynamic rupture of coal and rock caused by high-pressure gas |
| title_sort | experimental study on the dynamic rupture of coal and rock caused by high pressure gas |
| topic | gas decompression deformation fracture fragmentation critical gas pressure |
| url | https://journal.geomech.ac.cn//article/doi/10.12090/j.issn.1006-6616.2021.27.04.053 |
| work_keys_str_mv | AT dingyanlu experimentalstudyonthedynamicruptureofcoalandrockcausedbyhighpressuregas AT yuezhongqi experimentalstudyonthedynamicruptureofcoalandrockcausedbyhighpressuregas |