Device and method for detecting anchor rope grouting compactness in pre-embedding manner

A technology of compactness and anchor cable, which is applied in measurement devices, generation of ultrasonic/sonic/infrasonic waves, and analysis of solids using sonic/ultrasonic/infrasonic waves. Delay and other problems, to achieve the effect of convenient comparative analysis, convenient control and detection, and elimination of system delay errors

Active Publication Date: 2018-12-28
POWERCHINA ZHONGNAN ENG
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AI Technical Summary

Problems solved by technology

The waveform is more easily affected by environmental conditions, signal excitation factors, etc., resulting in problems in the length test accuracy and the quality judgment of the anchor section; there are requirements for the length of the exposed section of the anchor cable, and special protection is required; the inspection personnel operate close to the anchor head, high slope or deep water It cannot be detected in the medium; the acceleration sensor is arranged at the end, and there is a system delay; the excitation energy is small, and the frequency is high and the attenuation is fast
It is unavoidably far-fetched to use this method for non-destructive testing of anchor cables, and there is no ideal non-destructive testing method at present

Method used

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  • Device and method for detecting anchor rope grouting compactness in pre-embedding manner
  • Device and method for detecting anchor rope grouting compactness in pre-embedding manner
  • Device and method for detecting anchor rope grouting compactness in pre-embedding manner

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Embodiment Construction

[0015] Such as figure 1 As shown, the detection device of the present invention includes an electric spark seismic source 8 embedded in the concrete of the anchorage section of the borehole 7; at least two acceleration sensors 9 are embedded in the concrete of the anchorage section of the borehole 7, and the two acceleration sensors The sensors are respectively buried in the middle and bottom of the borehole 7, and the two acceleration sensors 9 and the electric spark source 8 are electrically connected to the detector.

[0016] An acceleration sensor is embedded in the concrete of the anchor cable anchorage section at the top of the borehole 7, and the acceleration sensor is electrically connected to the detector. The advantages of setting the acceleration sensor: good performance in adapting to the environment during use, no matter it is shock, vibration or temperature difference change, it will not cause any interference to the use of the instrument; the cost is low, which ...

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Abstract

The invention discloses a device and method for detecting anchor rope grouting compactness in a pre-embedding manner. According to the device and method, multiple accelerated speed sensors and an electric spark source are pre-embedded in an anchor rope construction period; system delay errors are eliminated by utilizing time differences received by the multiple sensors; and by adoption of a stresswave direct wave method and reflected wave method combined method, wave speeds of grouted concrete at anchor rope anchorage segments can be reflected more truly and accurately.

Description

technical field [0001] The invention relates to the field of engineering and construction technology, in particular to a pre-embedded device and method for detecting the grouting compactness of anchor cables. Background technique [0002] The most critical quality issue in anchor cable construction is the quality of the anchoring section of the anchor cable, that is, the grouting density of the anchoring section. At present, the inspection of the grouting density of the anchoring section of the anchor cable (also called non-destructive testing of the anchor cable) is mainly based on the non-destructive testing of the anchor rod. Acoustic reflection method. The acoustic wave reflection method is a dynamic non-destructive testing method. It applies a single pulse transient impact force to the top of the anchor (cable) to stimulate the elastic wave signal. The elastic wave propagates in the rod body (or rod system) and generates reflection. The sensor near the top of the bolt ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04G01N29/07G01N29/34
CPCG01N29/045G01N29/07G01N29/343G01N2291/011G01N2291/0232G01N2291/02818G01N2291/042
Inventor 潘江洋冯树荣卢小林舒志平左国青
Owner POWERCHINA ZHONGNAN ENG
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