USE OF RAYLEIGH SURFACE WAVE METHOD IN GROUTING TREATMENT IN KARSTIC COLLAPSE

Through the surface wave method to the exploration of the coal Rayleigh Surface, the characteristics and variation of wave velocity before and after rock fracture filling were analyzed and the grouting control results were determined. The pump-in test method and the core sampling method were used to verify the treatment of mine collapse. Surface wave metho dissuccess fully applied in Hezhou Guangxi Daling coal mine. The surface wave method was used to test the ground collapse coal mine before and after grouting, respectively adopt surface wave method to test, mainly through comparing the wave velocity and dispersion curve to determine the karst tunnel grouting effect. Results show that the drilling of the surface wave shape on the 0 to 20 v perpendicular is complete, and higher frequency, width is bigger, showing a full tilts traight line, show that in the same layer medium wave velocity feedback performance consistency, nodeficiency, after grouting hole, large cracks were better filling, forming a complete dielectric body