Detection system and method for evaluating damage of rock and cementitious materials

Abstract

The invention discloses a detection system and method for evaluating damage conditions of rocks and gelled materials, belonging to the technical field of material detection. The detection system of the present invention includes an excitation system and a signal acquisition and processing system; the detection method of the present invention includes the following steps: Step 1: select or process the metal rod for detection, so that the metal rod is a hollow pipe or a rod with a through groove Components; Step 2: Arrange a frequency sensor for collecting vibration signals in the hollow part or through groove of the metal rod; Step 3: Coupling the metal rod with the detected medium; Step 4: Vibration signal detection; Step 5: Using The signal acquisition module and signal processing module in the signal acquisition and processing system identify the effective waveform and calculate the corresponding frequency value; Step 6: Calculate the damage degree of the medium according to the frequency-damage degree / strength relationship inside the implanted system. The invention utilizes the vibration frequency of the rod coupled with the material medium to reverse the damage or strength change of the material medium.

Description

technical field [0001] The invention relates to a damage or strength detection technology for rock and gel materials, and belongs to the technical field of rock and gel materials detection. Background technique [0002] In the field of underground engineering, the damage / strength detection of rock or rock-like materials is of great significance for the design of roadway support and the stability assessment of building structures. At present, the common damage / strength detection methods of rock or rock-like materials mainly include deformation modulus method, stress-strain method, ultrasonic velocity, and dissipated energy. However, the above methods are often difficult to achieve in-situ and non-destructive testing. Among them, Ultrasonic methods and other methods are greatly disturbed by the environment and difficult to test. [0003] In addition, it is also difficult for the above method to go deep into the medium to detect damage / strength at different positions. At pres...

AI Technical Summary

Problems solved by technology

At present, the common damage / strength detection methods of rock or rock-like materials mainly include deformation modulus method, stress-strain method, ultrasonic velocity, and dissipated energy. However, the above methods are often difficult to achieve in-situ and non-destructive testing. Among them, Ultrasonic methods and other methods are greatly disturbed by the environment and difficult to test

[0003] In addition, the above methods are also difficult to penetrate deep into the medium to detect damage / strength at different positions

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