Study on seismic displacement of coal-rock fracture based on radiation energy
Shengquan He1
Maoxin Tian2
Xueqiu He3
Tingxiang Ren4
Dazhao Song2
Feng Shen2
Tuo Chen5
Junjun Feng6
1.Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mine,University of Science and Technology Beijing,Beijing 100083,China;Key Laboratory of Xinjiang Coal Resources Green Mining,Ministry of Education,Xinjiang Institute of Engineering,Urumqi 830023,China2.Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mine,University of Science and Technology Beijing,Beijing 100083,China3.Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mine,University of Science and Technology Beijing,Beijing 100083,China;Zhong-an Academy of Safety Engineering,Beijing 100083,China4.School of Civil,Mining and Environmental Engineering,University of Wollongong,Wollongong 2522,Australia5.Department of Mining and Materials Engineering,McGill University,Montreal H3A 0E8,Canada6.Civil Engineering and Architecture,Anhui University of Technology,Maanshan 243002,Anhui,China
摘要：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 seis-mic 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 founda-tion for dynamic support design for roadways.
机标关键词：energystudybasedcoal-rockdisplacementfractureradiationseismic
论文发表日期：2025-10-31
在线出版日期：2026-01-31（本平台首次上网日期，不代表文献的发表时间）
页数：17( 286-302 )
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