Experimental Study on the Softening Characteristics of Sandstone and Mudstone in Relation to Moisture Content
The kinetics of fluid-solid coupling during immersion is an important topic of investigation in rock engineering. Two rock types, sandstone and mudstone, are selected in this work to study the correlation between the softening characteristics of the rocks and moisture content. This is achieved throu...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2017/4010376 |
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| author | Gui-chen Li Chong-chong Qi Yuan-tian Sun Xiao-lin Tang Bao-quan Hou |
| author_facet | Gui-chen Li Chong-chong Qi Yuan-tian Sun Xiao-lin Tang Bao-quan Hou |
| author_sort | Gui-chen Li |
| collection | DOAJ |
| description | The kinetics of fluid-solid coupling during immersion is an important topic of investigation in rock engineering. Two rock types, sandstone and mudstone, are selected in this work to study the correlation between the softening characteristics of the rocks and moisture content. This is achieved through detailed studies using scanning electron microscopy, shear tests, and evaluation of rock index properties during exposure to different moisture contents. An underground roadway excavation is simulated by dynamic finite element modeling to analyze the effect of moisture content on the stability of the roadway. The results show that moisture content has a significant effect on shear properties reduction of both sandstone and mudstone, which must thus be considered in mining or excavation processes. Specifically, it is found that the number, area, and diameter of micropores, as well as surface porosity, increase with increasing moisture content. Additionally, stress concentration is negatively correlated with moisture content, while the influenced area and vertical displacement are positively correlated with moisture content. These findings may provide useful input for the design of underground roadways. |
| format | Article |
| id | doaj-art-b0d2ee47c1954bffb749dd4ef0d77d32 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-b0d2ee47c1954bffb749dd4ef0d77d322025-02-03T05:51:29ZengWileyShock and Vibration1070-96221875-92032017-01-01201710.1155/2017/40103764010376Experimental Study on the Softening Characteristics of Sandstone and Mudstone in Relation to Moisture ContentGui-chen Li0Chong-chong Qi1Yuan-tian Sun2Xiao-lin Tang3Bao-quan Hou4School of Mines, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Mines, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Mines, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Mines, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Mines, China University of Mining and Technology, Xuzhou 221116, ChinaThe kinetics of fluid-solid coupling during immersion is an important topic of investigation in rock engineering. Two rock types, sandstone and mudstone, are selected in this work to study the correlation between the softening characteristics of the rocks and moisture content. This is achieved through detailed studies using scanning electron microscopy, shear tests, and evaluation of rock index properties during exposure to different moisture contents. An underground roadway excavation is simulated by dynamic finite element modeling to analyze the effect of moisture content on the stability of the roadway. The results show that moisture content has a significant effect on shear properties reduction of both sandstone and mudstone, which must thus be considered in mining or excavation processes. Specifically, it is found that the number, area, and diameter of micropores, as well as surface porosity, increase with increasing moisture content. Additionally, stress concentration is negatively correlated with moisture content, while the influenced area and vertical displacement are positively correlated with moisture content. These findings may provide useful input for the design of underground roadways.http://dx.doi.org/10.1155/2017/4010376 |
| spellingShingle | Gui-chen Li Chong-chong Qi Yuan-tian Sun Xiao-lin Tang Bao-quan Hou Experimental Study on the Softening Characteristics of Sandstone and Mudstone in Relation to Moisture Content Shock and Vibration |
| title | Experimental Study on the Softening Characteristics of Sandstone and Mudstone in Relation to Moisture Content |
| title_full | Experimental Study on the Softening Characteristics of Sandstone and Mudstone in Relation to Moisture Content |
| title_fullStr | Experimental Study on the Softening Characteristics of Sandstone and Mudstone in Relation to Moisture Content |
| title_full_unstemmed | Experimental Study on the Softening Characteristics of Sandstone and Mudstone in Relation to Moisture Content |
| title_short | Experimental Study on the Softening Characteristics of Sandstone and Mudstone in Relation to Moisture Content |
| title_sort | experimental study on the softening characteristics of sandstone and mudstone in relation to moisture content |
| url | http://dx.doi.org/10.1155/2017/4010376 |
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