Signal acquisition device and method for nondestructive testing of quality of multi-defect long anchor cable
A non-destructive testing and signal acquisition technology, applied in measurement devices, generation of ultrasonic/sonic/infrasonic waves, analysis of solids using sonic/ultrasonic/infrasonic waves, etc. It can solve problems such as large stress wave attenuation, low acquisition efficiency, and reduced safety risks. , to achieve the effect of fast positioning, reducing random noise, and enhancing weak signals
Pending Publication Date: 2021-08-13
STATE GRID CORP OF CHINA +3
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[0012]
The purpose of the present invention is to provide a signal acquisition device and method for the quality non-destructive testing of multi-defect long anchor cables, which can solve the problems of low collection efficiency and large stress wave attenuation in the existing multi-defect long anchor cable quality non-destructive testing. Multi-directional signal collection and rapid anchor cable data superposition can improve the efficiency of multi-defect long anchor cable quality non-destructive testing and reduce safety risks
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[0037]In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0038] see figure 1 , which is one embodiment of the superimposed acquisition device applicable to the anchoring quality detection of long anchor cables in the present invention, including a vibrating hammer 1, a plurality of anchor cable sensors 2, a data acquisition instrument 3, a power supply 5, a memory 6, a computer 7, and more An ancho...
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The invention discloses a multi-azimuth signal acquisition device and method suitable for nondestructive testing of the quality of a multi-defect long anchor cable. The device comprises an excitation hammer, a plurality of anchor cable sensors, a data acquisition instrument, a power supply, a memory and a computer, the plurality of anchor cable sensors are sequentially installed at the exposed end of each anchor cable steel strand; the signal output end of each anchor cable sensor is connected with the signal input end of the data acquisition instrument, the signal output end of the data acquisition instrument is connected with the memory and the computer, and the power supply is connected with the data acquisition instrument. According to the invention, a multi-azimuth superposition type acquisition technology is adopted, weak signals can be effectively acquired, the effective weak signals are identified and extracted from complex fluctuation signals, and the wave velocity of each section can be accurately calculated through multi-azimuth acquisition, so that a plurality of defect positions are identified, and the anchoring quality of the anchor cable is accurately evaluated.
Description
technical field [0001] The invention relates to the technical field of elastic wave vibration detection using geophysics, in particular to a signal acquisition device and method for quality non-destructive testing of multi-defect long anchor cables. Background technique [0002] Prestressed anchor cable anchoring technology has been widely used in engineering, and has become the main support method of rock and soil reinforcement engineering. The prestressed anchor cable refers to the cable-shaped support that anchors the anchor cable inside the rock mass by means of prestressing. The anchor head is anchored into the rock mass through the drill hole on the weak structural surface of the rock mass, and the unstable rock mass and the stable rock mass are connected together. Together, the stress state of the rock mass can be changed, and the integrity and strength of the unstable rock mass of the slope can be improved. From the definition of the anchor cable, it can be seen tha...
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Login to View More IPC IPC(8): G01N29/04G01N29/34
CPCG01N29/045G01N29/34G01N2291/0234Y02A10/23
Inventor 崔博涛王柏林郑伟董瑞靖周黎明胡悦张杨付代光付小念芦建刚马晓霞卢斌舒斌臣邓良超耿文浩马蕊王排排张光亮胡安什别克·萨依然
Owner STATE GRID CORP OF CHINA