Experimental Investigation on Stress-Cracks-AE of the PRCMM for Disaster Prevention

Abstract

The present study highlighted the experimental investigation on acoustic emission (AE) evolution relations of the porous rock-like composite mineral material (PRCMM). Firstly, we developed an approach experimentally investigational method with combined AE-stress-duration response characteristics of the PRCMM, regarded as a crack-defect medium, employed in the mineral waste. The AE inherent characteristic parameters based on the duration, peak of stress accumulation (PSA) and PSA variation in the AE abnormality monitoring model of cracks recordings of mineral-waste-based specimens were obviously distinguish. It was indicated that the abnormality of loading-unloading-displacementtriggering- damage (LUDTD) was substantially similar. Thereby we concluded three stages applicable to the determination of mechanical properties of the PRCMM. Finally, field applications verified that the approach could greatly enhance the crack activities and ranges, and improved the safety and productions better. It would provide a theoretical foundation for dynamic disaster prevention and mineral waste reutilization.