Detection method and device for tunnel lining concrete void

A detection method, concrete technology, applied in the direction of using sound wave/ultrasonic wave/infrasonic wave to analyze solids, etc., to achieve the effect of convenient use, high detection accuracy and low cost

Inactive Publication Date: 2014-11-19
CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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Problems solved by technology

[0003]Currently, there are pulse-echo method, drilling method and radar detection method that can b...

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  • Detection method and device for tunnel lining concrete void

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Embodiment Construction

[0015] A method for detecting voids in tunnel lining concrete, such as figure 1 shown. The method is to firstly make a standard module of tunnel lining concrete according to the construction technology of tunnel lining concrete, then measure the acoustic wave reflection parameter of the standard module, and use the acoustic wave reflection parameter as the standard parameter; At each measuring point, a sound wave frequency transceiver pickup 2 is placed, and the sound wave frequency transceiver pickup 2 is connected with the sound wave frequency transmitting and receiving instrument 4; through the sound wave frequency transmitting and receiving instrument 4, the acoustic wave reflection parameters of each measuring point of the lining concrete to be tested are measured , and compare the acoustic reflection parameters of each measuring point with the standard parameters, and obtain the emptying situation of the lining concrete at each measuring point according to the compari...

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Abstract

The invention discloses a detection method and device for tunnel lining concrete void. In the method, first, a sound wave reflection fundamental frequency is determined on a lining concrete module, then detection points and a sound wave frequency transmit-receive pickup device are arranged on a surface of a lining concrete to be detected, Monitoring of a reflection wave after a sound wave signal goes through the lining concrete is carried out, and if the frequency changes, hollowing is formed. a sound wave reflection signal is recorded by a sound wave frequency emitting and receiving instrument, processing and analysis of change of the sound wave fundamental frequency of the detection point are carried out by a computer, and the following condition of the lining concrete at the detection point is calculated according to the change of the sound wave fundamental frequency. The method is advantaged by convenient usage, high precision and low cost.

Description

technical field [0001] The invention relates to a method and a device for detecting emptying of tunnel lining concrete, and belongs to the technical field of detecting emptying of tunnel concrete. Background technique [0002] In the tunnels of water conservancy and hydropower, highways, railways, etc., the concrete lining of the tunnel wall is a common construction technology and method in tunnel construction. Concrete lining is widely used in the above projects. In order to ensure the quality of construction and filling, in-situ real-time detection of the tunnel wall lining concrete is required according to the requirements of relevant specifications. [0003] At present, there are pulse-echo method, drilling method and radar detection method, which can be used to detect voids in tunnel lining concrete, but each detection method has certain limitations. Contents of the invention [0004] The object of the present invention is to provide a method and device for d...

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Application Information

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IPC IPC(8): G01N29/12
Inventor 皮开荣
Owner CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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