Research on the AE-stress laws and application of porous rock-like composite mineral material for waste recycling

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. Moreover, the integrated means of AE and crack smart optical acquirement (CSOA) is an effective application to experimentally investigate the characteristics of the PRCCM at different stress stages, 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 distinguished. It was indicated that the abnormality of loading-unloading-displacement-triggering-damage (LUDTD) was substantially similar. And then, the comparison of FLAC3D-based computational investigation on the injection limewater and surfactant (ratio of 1:1) was implemented. Results showed that the evolution and abnormality regimes on spatial-temporal-strength of the PRCMM were relatively collaborative. 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.