受载煤体变形破裂微波辐射前兆规律的实验研究

he effect and laws of microwave radiation of coal samples under uniaxial compression are experimentally studied and theoretically analyzed. Experiment results show that loading coal samples have the microwave radiation effect under the condition of uniaxial compression and accordingly in the frequency band of 6.6 GHz and the frequency band of 10.6 GHz the microwave radiation precursors indicating the failure of loading coal have respectively 3 types and 2 types. Based on the deformation and fracture process of loading coal, the generation mechanism of thermal radiation is studied and is composed of 3 parts. Study results show that the microwave radiation precursor laws of loading coal make the microwave remote technology have a more widespread application prospect to predict the dynamic catastrophe of coal and rock.