Experimental Equipment and Methods for Explosion Effects Based on Joint Acousto-Optical-Vibration-Magnetic-Electromagnetic Interpretation

The experimental equipment and method for blasting effects, which combines acoustic, optical, vibrational, electromagnetic interpretation, solves the problems of synchronous acquisition of multi-physics field signals and assessment of blasting energy, and realizes a comprehensive observation of the blasting process and four-dimensional reconstruction of the damage field.

CN121856063BActive Publication Date: 2026-05-26INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
Filing Date
2026-03-16
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing technologies struggle to simultaneously acquire multiple physical signals at high frequencies, making it impossible to fully reconstruct the entire blasting process, and they lack dynamic quantification methods to assess the efficiency of blasting energy utilization.

Method used

The explosion effect experimental equipment, which uses a combination of acoustic, optical, vibrational, and electromagnetic interpretation, achieves synchronous acquisition and fusion of multi-physics field signals through piezoelectric sensors, magnetoresistive sensors, accelerometers, and a dual-laser system. Combined with a deep convolutional neural network model and an extended Kalman filter algorithm, it tracks the trajectory and kinetic energy of fragments.

Benefits of technology

It achieves synchronous acquisition and fusion of multi-physics field signals, can dynamically quantify damage and energy distribution during the blasting process, and provides full-link observation and four-dimensional evolution reconstruction of the damage field.

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Abstract

This invention discloses an experimental apparatus and method for blasting effects based on joint interpretation of acoustic, optical, vibrational, electromagnetic, and magnetic fields. The experimental apparatus includes an experimental chamber, a physical model, and an observation system. The physical model is set on a base inside the experimental chamber and is made of transparent composite material. A charging hole is pre-drilled in the middle to simulate rock blasting, and superparamagnetic particles are uniformly incorporated into the transparent composite material. The surface of the physical model is also equipped with a piezoelectric sensor array and several acoustic emission sensors to detect the piezoelectric and acoustic emission signals generated by the blasting experiment, respectively. The inner wall of the experimental chamber is also equipped with a magnetoresistive sensor array to collect the magnetoresistive signals generated by the blasting experiment. An accelerometer is also configured on the base of the physical model to collect the acceleration signal of the overall vibration of the physical model. The observation system includes dual lasers, dual cameras, and a matching optical path structure set outside the experimental chamber.
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