Research on Mechanical Properties of Rock Mass with Tiny Cracks under FTCs Conditions
After the repeated freezing and dissolution of fractured rock masses in cold regions, the liquid present in the pores undergoes a water–ice phase transition, resulting in frost heave forces and damage to the internal structure of the rock mass. This causes the rock masses to continuously develop new...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-02-01
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| Series: | Symmetry |
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| Online Access: | https://www.mdpi.com/2073-8994/16/2/234 |
| _version_ | 1797296912889544704 |
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| author | Yin-Ge Zhu Yue Wu An-Qi Li Shuai Zhang |
| author_facet | Yin-Ge Zhu Yue Wu An-Qi Li Shuai Zhang |
| author_sort | Yin-Ge Zhu |
| collection | DOAJ |
| description | After the repeated freezing and dissolution of fractured rock masses in cold regions, the liquid present in the pores undergoes a water–ice phase transition, resulting in frost heave forces and damage to the internal structure of the rock mass. This causes the rock masses to continuously develop new cracks, which further expand and connect, leading to rock mass failure and ultimately reducing the overall stability of the rock mass in engineering projects. In this study, uniaxial compression tests, direct shear tests, and Brazilian splitting tests were conducted on rock after freeze–thaw cycles (FTCs), and the changes in the physical and mechanical properties of the rock under freeze–thaw conditions were obtained (this study used raw rock from an engineering project and processed it into symmetrical jointed rock samples). The roughness of the shear fracture surfaces was analyzed through 3D cross-sectional scanning experiments. Using statistical damage theory, the mechanism of freeze–thaw damage was analyzed, and a constitutive model for freeze–thaw rock damage was established. The research results can provide a theoretical basis and support for engineering safety and stability in cold regions. |
| first_indexed | 2024-03-07T22:11:41Z |
| format | Article |
| id | doaj.art-0a48f4462ff54e24b1aa834f80912d08 |
| institution | Directory Open Access Journal |
| issn | 2073-8994 |
| language | English |
| last_indexed | 2024-03-07T22:11:41Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Symmetry |
| spelling | doaj.art-0a48f4462ff54e24b1aa834f80912d082024-02-23T15:36:05ZengMDPI AGSymmetry2073-89942024-02-0116223410.3390/sym16020234Research on Mechanical Properties of Rock Mass with Tiny Cracks under FTCs ConditionsYin-Ge Zhu0Yue Wu1An-Qi Li2Shuai Zhang3Shandong Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, ChinaShandong Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, ChinaShandong Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, ChinaShandong Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, ChinaAfter the repeated freezing and dissolution of fractured rock masses in cold regions, the liquid present in the pores undergoes a water–ice phase transition, resulting in frost heave forces and damage to the internal structure of the rock mass. This causes the rock masses to continuously develop new cracks, which further expand and connect, leading to rock mass failure and ultimately reducing the overall stability of the rock mass in engineering projects. In this study, uniaxial compression tests, direct shear tests, and Brazilian splitting tests were conducted on rock after freeze–thaw cycles (FTCs), and the changes in the physical and mechanical properties of the rock under freeze–thaw conditions were obtained (this study used raw rock from an engineering project and processed it into symmetrical jointed rock samples). The roughness of the shear fracture surfaces was analyzed through 3D cross-sectional scanning experiments. Using statistical damage theory, the mechanism of freeze–thaw damage was analyzed, and a constitutive model for freeze–thaw rock damage was established. The research results can provide a theoretical basis and support for engineering safety and stability in cold regions.https://www.mdpi.com/2073-8994/16/2/234freeze–thaw cycleintermittently jointed rock massdirect shear testmechanical propertiesfreeze–thaw damage model |
| spellingShingle | Yin-Ge Zhu Yue Wu An-Qi Li Shuai Zhang Research on Mechanical Properties of Rock Mass with Tiny Cracks under FTCs Conditions Symmetry freeze–thaw cycle intermittently jointed rock mass direct shear test mechanical properties freeze–thaw damage model |
| title | Research on Mechanical Properties of Rock Mass with Tiny Cracks under FTCs Conditions |
| title_full | Research on Mechanical Properties of Rock Mass with Tiny Cracks under FTCs Conditions |
| title_fullStr | Research on Mechanical Properties of Rock Mass with Tiny Cracks under FTCs Conditions |
| title_full_unstemmed | Research on Mechanical Properties of Rock Mass with Tiny Cracks under FTCs Conditions |
| title_short | Research on Mechanical Properties of Rock Mass with Tiny Cracks under FTCs Conditions |
| title_sort | research on mechanical properties of rock mass with tiny cracks under ftcs conditions |
| topic | freeze–thaw cycle intermittently jointed rock mass direct shear test mechanical properties freeze–thaw damage model |
| url | https://www.mdpi.com/2073-8994/16/2/234 |
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