Mechanical Behavior and Acoustic Emission Characteristics of Sandstone Under Different Cyclic Loading and Unloading Disturbance Rates
ABSTRACT The frequency of dynamic disasters is escalating in deep coal mining, with an increasing number of disasters induced by the combined static and dynamic loading. To investigate the mechanical behavior of deep sandstone under mining, cyclic disturbance, uniaxial cyclic loading, and unloading...
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| Format: | Article |
| Language: | English |
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Wiley
2025-01-01
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| Series: | Energy Science & Engineering |
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| Online Access: | https://doi.org/10.1002/ese3.1978 |
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| _version_ | 1832592270349565952 |
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| author | Pengpeng Wang Liu Bin Chunwei Ling Qingshan Ren Baohui Xu Xuyu Hu |
| author_facet | Pengpeng Wang Liu Bin Chunwei Ling Qingshan Ren Baohui Xu Xuyu Hu |
| author_sort | Pengpeng Wang |
| collection | DOAJ |
| description | ABSTRACT The frequency of dynamic disasters is escalating in deep coal mining, with an increasing number of disasters induced by the combined static and dynamic loading. To investigate the mechanical behavior of deep sandstone under mining, cyclic disturbance, uniaxial cyclic loading, and unloading tests with equal amplitude were conducted at four different disturbance rates on the basis of static loading. The influence of loading and unloading disturbance rates on mechanical properties, fracture characteristics, acoustic emission (AE) temporal‐spatial evolution, and fractal characteristics of AE spatial distribution were analyzed. The results show that the peak strength of rock samples initially decreases and then increases as the disturbance rate increases. During the cyclic loading and unloading disturbance stage, AE exhibits a significant Kaiser effect under different disturbance rates. The higher the disturbance rate, the greater the number of cycles with high amplitude AE, but fewer high amplitude AE occur during the loading to peak failure stage. The increment of the damage variable is positively correlated with the loading and unloading disturbance rate overall. The AE spatial fractal dimension in rock samples decreases under different loading and unloading disturbance rates, stabilizing at a range of 2.1–2.3. As the loading and unloading disturbance rate increases, the decreasing magnitude in fractal dimension during the cyclic loading and unloading stage first increases and then decreases, with a relatively smaller decrease during the loading to peak failure stage. |
| format | Article |
| id | doaj-art-293ef6076fdf4735809e33952fc99d59 |
| institution | Kabale University |
| issn | 2050-0505 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Energy Science & Engineering |
| spelling | doaj-art-293ef6076fdf4735809e33952fc99d592025-01-21T11:38:24ZengWileyEnergy Science & Engineering2050-05052025-01-0113117619010.1002/ese3.1978Mechanical Behavior and Acoustic Emission Characteristics of Sandstone Under Different Cyclic Loading and Unloading Disturbance RatesPengpeng Wang0Liu Bin1Chunwei Ling2Qingshan Ren3Baohui Xu4Xuyu Hu5Mechanical and Electrical Engineering Department Yuncheng University Yuncheng ChinaState Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines Anhui University of Science and Technology Huainan ChinaSchool of Emergency Management and Safety Engineering China University of Mining and Technology Beijing ChinaSchool of Management Guizhou University of Commerce Guiyang Guizhou ChinaMechanical and Electrical Engineering Department Yuncheng University Yuncheng ChinaMechanical and Electrical Engineering Department Yuncheng University Yuncheng ChinaABSTRACT The frequency of dynamic disasters is escalating in deep coal mining, with an increasing number of disasters induced by the combined static and dynamic loading. To investigate the mechanical behavior of deep sandstone under mining, cyclic disturbance, uniaxial cyclic loading, and unloading tests with equal amplitude were conducted at four different disturbance rates on the basis of static loading. The influence of loading and unloading disturbance rates on mechanical properties, fracture characteristics, acoustic emission (AE) temporal‐spatial evolution, and fractal characteristics of AE spatial distribution were analyzed. The results show that the peak strength of rock samples initially decreases and then increases as the disturbance rate increases. During the cyclic loading and unloading disturbance stage, AE exhibits a significant Kaiser effect under different disturbance rates. The higher the disturbance rate, the greater the number of cycles with high amplitude AE, but fewer high amplitude AE occur during the loading to peak failure stage. The increment of the damage variable is positively correlated with the loading and unloading disturbance rate overall. The AE spatial fractal dimension in rock samples decreases under different loading and unloading disturbance rates, stabilizing at a range of 2.1–2.3. As the loading and unloading disturbance rate increases, the decreasing magnitude in fractal dimension during the cyclic loading and unloading stage first increases and then decreases, with a relatively smaller decrease during the loading to peak failure stage.https://doi.org/10.1002/ese3.1978acoustic emission cyclic loading and unloading ratesdeep coal miningfractal characteristicsmechanical behavior |
| spellingShingle | Pengpeng Wang Liu Bin Chunwei Ling Qingshan Ren Baohui Xu Xuyu Hu Mechanical Behavior and Acoustic Emission Characteristics of Sandstone Under Different Cyclic Loading and Unloading Disturbance Rates Energy Science & Engineering acoustic emission cyclic loading and unloading rates deep coal mining fractal characteristics mechanical behavior |
| title | Mechanical Behavior and Acoustic Emission Characteristics of Sandstone Under Different Cyclic Loading and Unloading Disturbance Rates |
| title_full | Mechanical Behavior and Acoustic Emission Characteristics of Sandstone Under Different Cyclic Loading and Unloading Disturbance Rates |
| title_fullStr | Mechanical Behavior and Acoustic Emission Characteristics of Sandstone Under Different Cyclic Loading and Unloading Disturbance Rates |
| title_full_unstemmed | Mechanical Behavior and Acoustic Emission Characteristics of Sandstone Under Different Cyclic Loading and Unloading Disturbance Rates |
| title_short | Mechanical Behavior and Acoustic Emission Characteristics of Sandstone Under Different Cyclic Loading and Unloading Disturbance Rates |
| title_sort | mechanical behavior and acoustic emission characteristics of sandstone under different cyclic loading and unloading disturbance rates |
| topic | acoustic emission cyclic loading and unloading rates deep coal mining fractal characteristics mechanical behavior |
| url | https://doi.org/10.1002/ese3.1978 |
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