Rock Strength Characteristics Based on Acoustic Testing

Authors

  • Huilin Zhang Shandong Agricultural University, Tai’an 271018, Shandong, China

DOI:

https://doi.org/10.53469/jpce.2024.06(09).07

Keywords:

Coal rock, Discrete, Wave velocity, Rock mechanics test

Abstract

In view of the characteristics of the complex composition and structure of coal rock whose strength has the discreteness, the wave velocity of coal rock specimen was measured by method of the ultrasonic pulse penetration. Meanwhile the relationship between the specimen wave velocity and mechanical parameters is obtained by regression analysis when using MTS815 testing machine for rock mechanics test. Results show that the strength differences of specimens which have similar wave velocity are small. Before the rock mechanics test, the wave velocity of specimens can be measured first. Then the strength of them can be expected and the specimens can also be classified according to the size of wave velocity, which will guide the rock mechanics test better, so as to provide a technical way for avoiding the blind trial from the discreteness of rock as far as possible.

References

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Li Kegang, Zhang Yuanying: “Damage Constitutive Model for Rock Considering Cyclic Drying-Wetting Effect and Its Experimental Validation” [J] Electronic Journal of Geotechnical Engineering, 2016,21(01): 277-286. Available at ejge.com.

Mengtang Xu, Dongsheng Zhang, Wei Zhang: “Deformation and Fracture Evolution of Surrounding Rock for Shallow Underground Projects” [J] Electronic Journal of Geotechnical Engineering, 2013(18.R): 3895-3908. Available at ejge.com.

CHENG Jiulong, et al. Testing and detection of rock mass[M]. Beijing: Seismological Press,2000,104-111.

CHENG Jiulong. The dynamic detection of rock mass failure by elasticwave computerized tomography[J]. Chinese Journal of Geotechnical Engineering, 2000, 22(5):565-568.

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Published

2024-09-26

How to Cite

Zhang, H. (2024). Rock Strength Characteristics Based on Acoustic Testing. Journal of Progress in Civil Engineering, 6(9), 36–38. https://doi.org/10.53469/jpce.2024.06(09).07