Experimental Study on Permeability of Fractured Sandstone with Different Tips
According to the seepage characteristics of fractured rock mass of hydropower slope insouthwest mountainous area,and taking the sandstone at left bank slope of Jinping HydropowerStation as an example, this paper tests and studies the permeability characteristics of rocksamples prefabricated with art...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Pearl River
2020-01-01
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| Series: | Renmin Zhujiang |
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| Online Access: | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.03.003 |
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| author | HE Ruxu PEI Xiangjun ZHONG Chuangui FAN Mingming |
| author_facet | HE Ruxu PEI Xiangjun ZHONG Chuangui FAN Mingming |
| author_sort | HE Ruxu |
| collection | DOAJ |
| description | According to the seepage characteristics of fractured rock mass of hydropower slope insouthwest mountainous area,and taking the sandstone at left bank slope of Jinping HydropowerStation as an example, this paper tests and studies the permeability characteristics of rocksamples prefabricated with artificial fracture in different tips under different confining pressuresand osmotic pressures by high pressure rock permeameter, and statistically analyzes thepermeability coefficients obtained from the tests. The test results show that with the increase ofosmotic pressure from 0.1 MPa to 0.5 MPa, the dissolution and scouring of hydrophilic minerals infractured sandstone increase gradually, resulting in new seepage channels and the increase ofpermeability coefficient. With the increase of confining pressure from 2 MPa to 4 MPa, thefracture and pore in the rock are closed by compression, leading to the reduction of permeabilitycoefficient. The overall permeability coefficient of fractured sandstone with tips of 0°, 30° and45°decreases in turn, and the increase of fracture dip changes the angle between fracture seepagechannel, initial seepage direction and confining pressure, which weakens the response ofpermeability coefficient to confining pressure and osmotic pressure. |
| format | Article |
| id | doaj-art-115edfb65feb4f4bbb1f7eaafea23f46 |
| institution | Kabale University |
| issn | 1001-9235 |
| language | zho |
| publishDate | 2020-01-01 |
| publisher | Editorial Office of Pearl River |
| record_format | Article |
| series | Renmin Zhujiang |
| spelling | doaj-art-115edfb65feb4f4bbb1f7eaafea23f462025-01-15T02:31:57ZzhoEditorial Office of Pearl RiverRenmin Zhujiang1001-92352020-01-014147652647Experimental Study on Permeability of Fractured Sandstone with Different TipsHE RuxuPEI XiangjunZHONG ChuanguiFAN MingmingAccording to the seepage characteristics of fractured rock mass of hydropower slope insouthwest mountainous area,and taking the sandstone at left bank slope of Jinping HydropowerStation as an example, this paper tests and studies the permeability characteristics of rocksamples prefabricated with artificial fracture in different tips under different confining pressuresand osmotic pressures by high pressure rock permeameter, and statistically analyzes thepermeability coefficients obtained from the tests. The test results show that with the increase ofosmotic pressure from 0.1 MPa to 0.5 MPa, the dissolution and scouring of hydrophilic minerals infractured sandstone increase gradually, resulting in new seepage channels and the increase ofpermeability coefficient. With the increase of confining pressure from 2 MPa to 4 MPa, thefracture and pore in the rock are closed by compression, leading to the reduction of permeabilitycoefficient. The overall permeability coefficient of fractured sandstone with tips of 0°, 30° and45°decreases in turn, and the increase of fracture dip changes the angle between fracture seepagechannel, initial seepage direction and confining pressure, which weakens the response ofpermeability coefficient to confining pressure and osmotic pressure.http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.03.003sandstonefracture diphigh pressure permeabilitypermeability coefficient |
| spellingShingle | HE Ruxu PEI Xiangjun ZHONG Chuangui FAN Mingming Experimental Study on Permeability of Fractured Sandstone with Different Tips Renmin Zhujiang sandstone fracture dip high pressure permeability permeability coefficient |
| title | Experimental Study on Permeability of Fractured Sandstone with Different Tips |
| title_full | Experimental Study on Permeability of Fractured Sandstone with Different Tips |
| title_fullStr | Experimental Study on Permeability of Fractured Sandstone with Different Tips |
| title_full_unstemmed | Experimental Study on Permeability of Fractured Sandstone with Different Tips |
| title_short | Experimental Study on Permeability of Fractured Sandstone with Different Tips |
| title_sort | experimental study on permeability of fractured sandstone with different tips |
| topic | sandstone fracture dip high pressure permeability permeability coefficient |
| url | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.03.003 |
| work_keys_str_mv | AT heruxu experimentalstudyonpermeabilityoffracturedsandstonewithdifferenttips AT peixiangjun experimentalstudyonpermeabilityoffracturedsandstonewithdifferenttips AT zhongchuangui experimentalstudyonpermeabilityoffracturedsandstonewithdifferenttips AT fanmingming experimentalstudyonpermeabilityoffracturedsandstonewithdifferenttips |