Numerical Modeling of Rock Panels Subjected to Blast Loadings
In rock engineering problems, the rock is usually subjected to dynamic loads induced by drill, blast and rockburst. Therefore, understanding the dynamic response of rock benefit the safety and productivity of excavation activities. In this study, the response of rock panels under blast loadings is n...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/2377989 |
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| author | Haijun Wang Daiyu Xiong Yun Duan Weiqin Cao Wenru Zhang Peng Jiao Bonan Wang Xulin Zhao Yonggang Miao Le Zhou |
| author_facet | Haijun Wang Daiyu Xiong Yun Duan Weiqin Cao Wenru Zhang Peng Jiao Bonan Wang Xulin Zhao Yonggang Miao Le Zhou |
| author_sort | Haijun Wang |
| collection | DOAJ |
| description | In rock engineering problems, the rock is usually subjected to dynamic loads induced by drill, blast and rockburst. Therefore, understanding the dynamic response of rock benefit the safety and productivity of excavation activities. In this study, the response of rock panels under blast loadings is numerically investigated. The uniaxial and triaxial compression tests are firstly conducted in the laboratory to obtain the material property of four types of rocks, including Chuanshan limestone, Gaolishan sandstone, Mineralized limestone and Xixia limestone. Then, a total of 16 numerical simulations are carried out in which each type of rock panel is subjected to TNT blast loadings with four scaled distances, i.e., 0.15 m/kg1/3, 0.30 m/kg1/3, 0.60 m/kg1/3, 1.20 m/kg1/3. The damage distribution, which is characterized by the effective plastic strain, within the rock panels is quantitatively and qualitatively analyzed. The modelling results demonstrate that the effect of blast loading on the rock is material dependent. For a given scaled distance, the Gaolishan sandstone damages most severely, followed by Xixia limestone, Chuanshan limestone, and mineralized limestone. A critical scaled distance is observed on the limestone panels. When the scaled distance is smaller than the critical value, the damage of limestone panels increases with increasing the scaled distance. Once exceeding the critical value, the damage of limestone panels decreases with the increase of scaled distance. However, such a transitional scaled distance is not observed in the sandstone panels, of which damage decreases gradually with the increases of scaled distance. |
| format | Article |
| id | doaj-art-396edba66bfd4a50b664e40aa8d98a21 |
| institution | Kabale University |
| issn | 1687-8094 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-396edba66bfd4a50b664e40aa8d98a212025-02-03T07:24:17ZengWileyAdvances in Civil Engineering1687-80942022-01-01202210.1155/2022/2377989Numerical Modeling of Rock Panels Subjected to Blast LoadingsHaijun Wang0Daiyu Xiong1Yun Duan2Weiqin Cao3Wenru Zhang4Peng Jiao5Bonan Wang6Xulin Zhao7Yonggang Miao8Le Zhou9School of Resource and Civil EngineeringChina Coal Technology & Engineering GroupSchool of Resource and Civil EngineeringNanjing Yinmao Lead-zinc Mining Co.Ltd.Nanjing Yinmao Lead-zinc Mining Co.Ltd.Nanjing Yinmao Lead-zinc Mining Co.Ltd.School of Resource and Civil EngineeringBGRIMM Technology GroupBGRIMM Technology GroupChangchun Gold Research Institute Co.Ltd.In rock engineering problems, the rock is usually subjected to dynamic loads induced by drill, blast and rockburst. Therefore, understanding the dynamic response of rock benefit the safety and productivity of excavation activities. In this study, the response of rock panels under blast loadings is numerically investigated. The uniaxial and triaxial compression tests are firstly conducted in the laboratory to obtain the material property of four types of rocks, including Chuanshan limestone, Gaolishan sandstone, Mineralized limestone and Xixia limestone. Then, a total of 16 numerical simulations are carried out in which each type of rock panel is subjected to TNT blast loadings with four scaled distances, i.e., 0.15 m/kg1/3, 0.30 m/kg1/3, 0.60 m/kg1/3, 1.20 m/kg1/3. The damage distribution, which is characterized by the effective plastic strain, within the rock panels is quantitatively and qualitatively analyzed. The modelling results demonstrate that the effect of blast loading on the rock is material dependent. For a given scaled distance, the Gaolishan sandstone damages most severely, followed by Xixia limestone, Chuanshan limestone, and mineralized limestone. A critical scaled distance is observed on the limestone panels. When the scaled distance is smaller than the critical value, the damage of limestone panels increases with increasing the scaled distance. Once exceeding the critical value, the damage of limestone panels decreases with the increase of scaled distance. However, such a transitional scaled distance is not observed in the sandstone panels, of which damage decreases gradually with the increases of scaled distance.http://dx.doi.org/10.1155/2022/2377989 |
| spellingShingle | Haijun Wang Daiyu Xiong Yun Duan Weiqin Cao Wenru Zhang Peng Jiao Bonan Wang Xulin Zhao Yonggang Miao Le Zhou Numerical Modeling of Rock Panels Subjected to Blast Loadings Advances in Civil Engineering |
| title | Numerical Modeling of Rock Panels Subjected to Blast Loadings |
| title_full | Numerical Modeling of Rock Panels Subjected to Blast Loadings |
| title_fullStr | Numerical Modeling of Rock Panels Subjected to Blast Loadings |
| title_full_unstemmed | Numerical Modeling of Rock Panels Subjected to Blast Loadings |
| title_short | Numerical Modeling of Rock Panels Subjected to Blast Loadings |
| title_sort | numerical modeling of rock panels subjected to blast loadings |
| url | http://dx.doi.org/10.1155/2022/2377989 |
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