Bearing characteristics and damage rules of regenerated rock mass
Abstract This study investigates the bearing characteristics and damage evolution of regenerative rock masses formed under varying geological conditions through uniaxial loading tests, numerical simulations, and theoretical derivations. Regenerative rock mass samples with different water-cement rati...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-84377-1 |
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| author | Ping Wang Zilong Zeng Yingming Li Hongbo Liao Jianhua Lv Haijun Guo |
| author_facet | Ping Wang Zilong Zeng Yingming Li Hongbo Liao Jianhua Lv Haijun Guo |
| author_sort | Ping Wang |
| collection | DOAJ |
| description | Abstract This study investigates the bearing characteristics and damage evolution of regenerative rock masses formed under varying geological conditions through uniaxial loading tests, numerical simulations, and theoretical derivations. Regenerative rock mass samples with different water-cement ratios and cementing materials were prepared, and the mechanical behavior during the loading process was analyzed. The results indicate that the secondary damage process can be divided into three stages: pre-peak, weakening, and friction. As the mechanical properties of the cementing matrix improve, the bearing capacity increases, and the failure mode transitions from ductile to brittle. A damage constitutive model incorporating the Weibull distribution and a damage correction coefficient is proposed to predict the mechanical strength of regenerative rock masses. Numerical simulations using Particle Flow Code 3D (PFC3D) reveal that enhanced mechanical properties of the cementing material lead to a shift from tensile to shear failure. This study provides theoretical and practical guidance for the stability control of regenerative rock mass engineering, offering new insights into the design of support systems for mining operations. The findings have significant implications for the recovery of shallow residual coal resources and the stability control of mining roadways. |
| format | Article |
| id | doaj-art-63e46d50e5e94f0d862de2f25b41e86e |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-63e46d50e5e94f0d862de2f25b41e86e2025-01-19T12:19:09ZengNature PortfolioScientific Reports2045-23222025-01-0115111710.1038/s41598-024-84377-1Bearing characteristics and damage rules of regenerated rock massPing Wang0Zilong Zeng1Yingming Li2Hongbo Liao3Jianhua Lv4Haijun Guo5College of Resources, Environment and Safety Engineering, University of Science and Technology of HunanCollege of Resources, Environment and Safety Engineering, University of Science and Technology of HunanKey Laboratory of Ministry of Education for Coal Mine Safety and Efficient Mining, Anhui University of Science and TechnologyDazhu Coal and Electricity Group of Sichuan, Xiaohezui Coal MineDazhu Coal and Electricity Group of Sichuan, Xiaohezui Coal MineDazhu Coal and Electricity Group of Sichuan, Xiaohezui Coal MineAbstract This study investigates the bearing characteristics and damage evolution of regenerative rock masses formed under varying geological conditions through uniaxial loading tests, numerical simulations, and theoretical derivations. Regenerative rock mass samples with different water-cement ratios and cementing materials were prepared, and the mechanical behavior during the loading process was analyzed. The results indicate that the secondary damage process can be divided into three stages: pre-peak, weakening, and friction. As the mechanical properties of the cementing matrix improve, the bearing capacity increases, and the failure mode transitions from ductile to brittle. A damage constitutive model incorporating the Weibull distribution and a damage correction coefficient is proposed to predict the mechanical strength of regenerative rock masses. Numerical simulations using Particle Flow Code 3D (PFC3D) reveal that enhanced mechanical properties of the cementing material lead to a shift from tensile to shear failure. This study provides theoretical and practical guidance for the stability control of regenerative rock mass engineering, offering new insights into the design of support systems for mining operations. The findings have significant implications for the recovery of shallow residual coal resources and the stability control of mining roadways.https://doi.org/10.1038/s41598-024-84377-1Regenerated rock massBearing characteristicsDamage constitutive modelMicrofractureMicroscopic energy |
| spellingShingle | Ping Wang Zilong Zeng Yingming Li Hongbo Liao Jianhua Lv Haijun Guo Bearing characteristics and damage rules of regenerated rock mass Scientific Reports Regenerated rock mass Bearing characteristics Damage constitutive model Microfracture Microscopic energy |
| title | Bearing characteristics and damage rules of regenerated rock mass |
| title_full | Bearing characteristics and damage rules of regenerated rock mass |
| title_fullStr | Bearing characteristics and damage rules of regenerated rock mass |
| title_full_unstemmed | Bearing characteristics and damage rules of regenerated rock mass |
| title_short | Bearing characteristics and damage rules of regenerated rock mass |
| title_sort | bearing characteristics and damage rules of regenerated rock mass |
| topic | Regenerated rock mass Bearing characteristics Damage constitutive model Microfracture Microscopic energy |
| url | https://doi.org/10.1038/s41598-024-84377-1 |
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