Study on seismic displacement of coal-rock fracture based on radiation energy
Abstract Accurately revealing the spatial distribution law of seismic displacement is significance for revealing the mechanism of dynamic load induced rockburst and guiding the dynamic support of roadway. This paper established the function of seismic displacement based on radiation energy, and comp...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-08-01
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| Series: | International Journal of Coal Science & Technology |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s40789-025-00819-9 |
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| Summary: | Abstract Accurately revealing the spatial distribution law of seismic displacement is significance for revealing the mechanism of dynamic load induced rockburst and guiding the dynamic support of roadway. This paper established the function of seismic displacement based on radiation energy, and compared the influences of fracture type, radiation energy, shear strength, fracture velocity and medium density on the seismic displacement. The results showed that the displacement amplitudes of surrounding rock caused by P-wave, SH-wave and SV-wave increased with the rising of radiation energy, and the rate of displacement amplitude also accelerated. The displacement amplitudes of seismic wave associated with tensile fractures are significantly higher than that with shear fractures. The spatial displacement amplitude of S-wave was significantly higher than that of P-wave by one order of magnitude. The peak value of P-wave displacement of shear fracture was concentrated in two planes at 45° angle to the fracture surface. For SH-wave and SV-wave components, peak values were mainly observed on the fracture surface and its orthogonal plane. The P-wave displacement on the orthogonal plane to the fracture movement was zero, the displacement field of SV-wave was distributed in four quadrants, and the displacement field of SH-wave was symmetrical. The higher the value of medium attribute, the more significant the damage effect of coal-rock seismic wave weakening, and the influence on the S-wave is greater than that of the P-wave. The displacement amplitude caused by seismic wave gradually increased with the rising of fracture velocity of coal- rock mass. The peak value of P-wave displacement increased linearly, and the peak value of S-wave displacement was nonlinear. The research results laid a theoretical foundation for dynamic support design for roadways. |
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| ISSN: | 2095-8293 2198-7823 |