Experimental Study on Failure Law and Mechanism of Red Sandstone under Ultrasonic Vibration Excitation
Rock breakage is inevitable for creating openings in underground engineering operations. Ultrasonic vibration has been attracting extensive attention for such a practice considering its outstanding performance in rock breakage. In order to understand the fundamental failure mechanism of rocks subjec...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2022/3078599 |
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| _version_ | 1832568194803433472 |
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| author | Jiyao Wang Xufeng Wang Xuyang Chen Liang Chen Zhanbiao Yang Zechao Chang Lei Zhang Zhijun Niu |
| author_facet | Jiyao Wang Xufeng Wang Xuyang Chen Liang Chen Zhanbiao Yang Zechao Chang Lei Zhang Zhijun Niu |
| author_sort | Jiyao Wang |
| collection | DOAJ |
| description | Rock breakage is inevitable for creating openings in underground engineering operations. Ultrasonic vibration has been attracting extensive attention for such a practice considering its outstanding performance in rock breakage. In order to understand the fundamental failure mechanism of rocks subjected to ultrasonic vibrations, based on P-wave monitoring and the direct current electric method, we captured the evolution of the failure process of the red sandstone. In addition, we fundamentally analyse the failure mechanisms of the red sandstone using numerical simulation and microscopy scans. It was found that extensive fractures were initiated due to the ultrasonic vibration and the fractures propagated downwards forming a conical shape. The apparent resistivity became as high as 320000 Ω being 16 times the initial resistivity. The fracture propagated downwards as deep as 41 mm. The maximum damage parameter on the testing sample could be as high as 0.68, and it completely failed after 140 s of ultrasonic vibration duration. As a result of numerical simulation, it was found that the microfractures and pores in the testing sample were activated due to the stress wave resulting from the ultrasonic vibration leading to the fracture propagation and eventually complete failure. Through comparing the performance of uniaxial compressive loading and ultrasonic vibration techniques in rock damage, it was concluded the latter has a much higher capacity and competence in rock breakage. |
| format | Article |
| id | doaj-art-09c66b1a146846b39fc28a1085655b5e |
| institution | Kabale University |
| issn | 1468-8123 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-09c66b1a146846b39fc28a1085655b5e2025-02-03T00:59:35ZengWileyGeofluids1468-81232022-01-01202210.1155/2022/3078599Experimental Study on Failure Law and Mechanism of Red Sandstone under Ultrasonic Vibration ExcitationJiyao Wang0Xufeng Wang1Xuyang Chen2Liang Chen3Zhanbiao Yang4Zechao Chang5Lei Zhang6Zhijun Niu7School of MinesSchool of MinesSchool of MinesSchool of MinesState Key Laboratory of Coking Coal Resource Development and Comprehensive UtilizationSchool of MinesSchool of MinesSchool of MinesRock breakage is inevitable for creating openings in underground engineering operations. Ultrasonic vibration has been attracting extensive attention for such a practice considering its outstanding performance in rock breakage. In order to understand the fundamental failure mechanism of rocks subjected to ultrasonic vibrations, based on P-wave monitoring and the direct current electric method, we captured the evolution of the failure process of the red sandstone. In addition, we fundamentally analyse the failure mechanisms of the red sandstone using numerical simulation and microscopy scans. It was found that extensive fractures were initiated due to the ultrasonic vibration and the fractures propagated downwards forming a conical shape. The apparent resistivity became as high as 320000 Ω being 16 times the initial resistivity. The fracture propagated downwards as deep as 41 mm. The maximum damage parameter on the testing sample could be as high as 0.68, and it completely failed after 140 s of ultrasonic vibration duration. As a result of numerical simulation, it was found that the microfractures and pores in the testing sample were activated due to the stress wave resulting from the ultrasonic vibration leading to the fracture propagation and eventually complete failure. Through comparing the performance of uniaxial compressive loading and ultrasonic vibration techniques in rock damage, it was concluded the latter has a much higher capacity and competence in rock breakage.http://dx.doi.org/10.1155/2022/3078599 |
| spellingShingle | Jiyao Wang Xufeng Wang Xuyang Chen Liang Chen Zhanbiao Yang Zechao Chang Lei Zhang Zhijun Niu Experimental Study on Failure Law and Mechanism of Red Sandstone under Ultrasonic Vibration Excitation Geofluids |
| title | Experimental Study on Failure Law and Mechanism of Red Sandstone under Ultrasonic Vibration Excitation |
| title_full | Experimental Study on Failure Law and Mechanism of Red Sandstone under Ultrasonic Vibration Excitation |
| title_fullStr | Experimental Study on Failure Law and Mechanism of Red Sandstone under Ultrasonic Vibration Excitation |
| title_full_unstemmed | Experimental Study on Failure Law and Mechanism of Red Sandstone under Ultrasonic Vibration Excitation |
| title_short | Experimental Study on Failure Law and Mechanism of Red Sandstone under Ultrasonic Vibration Excitation |
| title_sort | experimental study on failure law and mechanism of red sandstone under ultrasonic vibration excitation |
| url | http://dx.doi.org/10.1155/2022/3078599 |
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