Bending seepage test device and test method based on acoustic emission detection technology

Abstract

The invention discloses a bending seepage test device and test method based on acoustic emission detection technology. The device comprises an axial loading system, a hydraulic pressure control system, an acoustic emission device and a bending seepage system; a bottom plate vertebra, an annular lower platen, a rock sample, an annular upper platen and a piston are orderly arranged in a cylinder ofthe bending seepage system; the rock sample is fixed between the annular upper platen and the annular lower platen; the bottom plate vertebra passes through the lower platen to be up against the center of the rock sample; a runner communicating with an inner hole of the annular upper platen is arranged in the piston, the hydraulic pressure control system is used for importing high-pressure water into the runner so as to realize data collection through the hydraulic pressure-flow data collector; and a probe of the acoustic emission device is deployed on a sidewall of the rock sample. The acoustic emission detection technology is applied to the test device through the application, thereby analyzing the crack evolution law of the rock sample in the bending destruction process, the mechanism that the rock stratum is in water burst disaster in the bending deformation destruction can be researched from the microscopic angle by combining the seepage evolution law in the bending deformation.

Description

technical field [0001] The invention belongs to the technical field of ore body mining, in particular to a bending seepage test device and a test method based on acoustic emission detection technology. Background technique [0002] As the depth of resource development and utilization continues to increase, problems such as high in-situ stress and high osmotic pressure will be caused. resource development is a major challenge. Engineering technicians and previous scholars have made a lot of contributions to the research on the permeability instability of the roof and floor of the stope, and they have achieved fruitful results. From various angles such as migration, variable mass seepage, etc., and using numerical analysis, indoor similar simulation tests, field tests and other means to explore the internal mechanism and prevention measures of water inrush disasters, but most scholars take the study of geology containing joint structures as the background, through Numerical ...

AI Technical Summary

Problems solved by technology

Many scholars have carried out acoustic emission tests in the test process of uniaxial compression and triaxial compression, analyzed the law of crack development, studied the relationship between the law of cracks and macroscopic damage properties, and the law of strength change, and made great progress, proving that the non-destructive detection of acoustic emission Technology has been successfully applied to the study of rock mechanics, but few people have combined acoustic emission detection technology with seepage tests to study the internal mechanism of water inrush disasters in the mining of deep mineral resources

Images