Research on the Shear Performance of Carbonaceous Mudstone Under Natural and Saturated Conditions and Numerical Simulation of Slope Stability
Rainfall can easily cause local sliding and collapse of carbonaceous mudstone deep road cut slopes. In order to study the strength characteristics of carbonaceous mudstone under different water environments, large-scale horizontal push shear tests were conducted on carbonaceous mudstone rock masses...
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MDPI AG
2025-06-01
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| Online Access: | https://www.mdpi.com/2076-3417/15/12/6935 |
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| author | Jian Zhao Hongying Chen Rusong Nie |
| author_facet | Jian Zhao Hongying Chen Rusong Nie |
| author_sort | Jian Zhao |
| collection | DOAJ |
| description | Rainfall can easily cause local sliding and collapse of carbonaceous mudstone deep road cut slopes. In order to study the strength characteristics of carbonaceous mudstone under different water environments, large-scale horizontal push shear tests were conducted on carbonaceous mudstone rock masses in their natural state and after immersion in saturated water. The push shear force–displacement relationship curve and fracture surface shape characteristics of carbonaceous mudstone samples were analyzed, and the shear strength index of carbonaceous mudstone was obtained, and numerical simulations on the stability and support effect of carbonaceous mudstone slopes were conducted. The research results indicate that carbonaceous mudstone can exhibit good structural properties and typical strain softening characteristics under natural conditions. The fracture surface, shear strength, and shear deformation process of carbonaceous mudstone samples will undergo significant changes after being soaked in saturated water. The average cohesion decreases by 33% compared to the natural state, and the internal friction angle decreases by 15%. The numerical simulation results also fully verify the attenuation of mechanical properties of carbonaceous mudstone after immersion, as well as the effectiveness of prestressed anchor cables and frame beams in supporting carbonaceous mudstone slopes. The research results provide an effective method for understanding the shear performance of carbonaceous mudstone and practical guidance for evaluating the stability and reinforcement design of carbonaceous mudstone slopes. |
| format | Article |
| id | doaj-art-c4024f1423bf4d6ea9e333c54abdfb5f |
| institution | Matheson Library |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
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| spelling | doaj-art-c4024f1423bf4d6ea9e333c54abdfb5f2025-06-25T13:26:57ZengMDPI AGApplied Sciences2076-34172025-06-011512693510.3390/app15126935Research on the Shear Performance of Carbonaceous Mudstone Under Natural and Saturated Conditions and Numerical Simulation of Slope StabilityJian Zhao0Hongying Chen1Rusong Nie2School of Transportation, Changsha University of Science & Technology, Changsha 410114, ChinaSchool of Transportation, Changsha University of Science & Technology, Changsha 410114, ChinaSchool of Civil Engineering, Central South University, Changsha 410075, ChinaRainfall can easily cause local sliding and collapse of carbonaceous mudstone deep road cut slopes. In order to study the strength characteristics of carbonaceous mudstone under different water environments, large-scale horizontal push shear tests were conducted on carbonaceous mudstone rock masses in their natural state and after immersion in saturated water. The push shear force–displacement relationship curve and fracture surface shape characteristics of carbonaceous mudstone samples were analyzed, and the shear strength index of carbonaceous mudstone was obtained, and numerical simulations on the stability and support effect of carbonaceous mudstone slopes were conducted. The research results indicate that carbonaceous mudstone can exhibit good structural properties and typical strain softening characteristics under natural conditions. The fracture surface, shear strength, and shear deformation process of carbonaceous mudstone samples will undergo significant changes after being soaked in saturated water. The average cohesion decreases by 33% compared to the natural state, and the internal friction angle decreases by 15%. The numerical simulation results also fully verify the attenuation of mechanical properties of carbonaceous mudstone after immersion, as well as the effectiveness of prestressed anchor cables and frame beams in supporting carbonaceous mudstone slopes. The research results provide an effective method for understanding the shear performance of carbonaceous mudstone and practical guidance for evaluating the stability and reinforcement design of carbonaceous mudstone slopes.https://www.mdpi.com/2076-3417/15/12/6935carbonaceous mudstonehorizontal push shear testshear strengthsoak in saturated waternumerical simulation |
| spellingShingle | Jian Zhao Hongying Chen Rusong Nie Research on the Shear Performance of Carbonaceous Mudstone Under Natural and Saturated Conditions and Numerical Simulation of Slope Stability Applied Sciences carbonaceous mudstone horizontal push shear test shear strength soak in saturated water numerical simulation |
| title | Research on the Shear Performance of Carbonaceous Mudstone Under Natural and Saturated Conditions and Numerical Simulation of Slope Stability |
| title_full | Research on the Shear Performance of Carbonaceous Mudstone Under Natural and Saturated Conditions and Numerical Simulation of Slope Stability |
| title_fullStr | Research on the Shear Performance of Carbonaceous Mudstone Under Natural and Saturated Conditions and Numerical Simulation of Slope Stability |
| title_full_unstemmed | Research on the Shear Performance of Carbonaceous Mudstone Under Natural and Saturated Conditions and Numerical Simulation of Slope Stability |
| title_short | Research on the Shear Performance of Carbonaceous Mudstone Under Natural and Saturated Conditions and Numerical Simulation of Slope Stability |
| title_sort | research on the shear performance of carbonaceous mudstone under natural and saturated conditions and numerical simulation of slope stability |
| topic | carbonaceous mudstone horizontal push shear test shear strength soak in saturated water numerical simulation |
| url | https://www.mdpi.com/2076-3417/15/12/6935 |
| work_keys_str_mv | AT jianzhao researchontheshearperformanceofcarbonaceousmudstoneundernaturalandsaturatedconditionsandnumericalsimulationofslopestability AT hongyingchen researchontheshearperformanceofcarbonaceousmudstoneundernaturalandsaturatedconditionsandnumericalsimulationofslopestability AT rusongnie researchontheshearperformanceofcarbonaceousmudstoneundernaturalandsaturatedconditionsandnumericalsimulationofslopestability |