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Device and method for searching looseness and emptiness of urban subway interval road in detail

A technology for roads and subways, applied in the field of fine detection of road diseases along subway lines, can solve the problems of difficult to obtain standard samples, large amount of engineering, and difficulty in forming, and achieve the effects of accurate detection results and convenient on-site operation.

Active Publication Date: 2015-06-24
BEIJING MUNICIPAL ENG RES INST +2
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Problems solved by technology

The drilling and coring method requires a large amount of work, and the road surface of the diseased road is generally broken. It is difficult to form the coring when it encounters water. It is difficult to take the core to form a standard sample, and it is costly. running, not suitable for the development requirements of modern urban roads
Especially for the roads along the urban subway, the probability of roadbed disease occurrence is higher at a depth of about 10m, which belongs to the blind spot of radar detection, and the current disease detection cannot meet the actual needs

Method used

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  • Device and method for searching looseness and emptiness of urban subway interval road in detail

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Embodiment Construction

[0020] From figure 1 It can be seen from the figure that this kind of device for fine detection of loose and empty roads in urban subway intervals includes a non-destructive testing device, a minimally destructive testing device, and a data processing unit; the non-destructive testing device includes: an orthogonal shock detection three-dimensional scanning device and a digital Panoramic peeping imaging device; minimal damage testing device includes: small hole digital drilling device and digital hole pressure static penetrating device;

[0021] Orthogonal shock detection three-dimensional scanning device, configured to obtain road loose layers and hidden danger detection maps, and obtain semi-quantitative results of road diseases;

[0022] Digital panorama peeping imaging device, configured to place precision probes in small drilling holes to obtain semi-quantitative imaging results of roadbed cavities, water pockets and undense layers;

[0023] The small hole digital drilli...

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Abstract

The invention discloses a device for searching the looseness and emptiness of an urban subway interval road in detail; the detection depth of the device is more than 5m, the road is not damaged by the device, and the device is convenient and fast in field operation and accurate in search result. The device comprises a nondestructive testing device, a quasi-nondestructive testing device and a data processing unit, wherein the nondestructive testing device comprises an orthogonal shock detection three-dimensional scanning device and a digital panoramic peeping imaging device; the quasi-nondestructive testing device comprises a small-hole digital drilling measurement device and a digital pore pressure static cone penetration test device. The invention also provides a method for searching the looseness and emptiness of the urban subway interval road in detail.

Description

technical field [0001] The invention belongs to the technical field of fine detection of road defects along subway lines, and in particular relates to a device and method for fine detection of loose and empty roads in urban subway sections. Background technique [0002] At present, the road disease detection along the subway mostly adopts the radar method or the drilling coring method. The radar method is: the ground penetrating radar transmits broadband short-pulse high-frequency electromagnetic waves to the ground, uses the electrical properties of different underground media and the reflection principle of electromagnetic waves at the interface, and analyzes the amplitude, phase and spectrum of the reflected electromagnetic waves from the underground media. Kinematics and dynamics characteristics are used to analyze and infer the structure and physical properties of underground media. Since the detection depth is generally within 5m, the detection results have qualitative...

Claims

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Application Information

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IPC IPC(8): G01N3/08G01N33/24
Inventor 吕祥锋
Owner BEIJING MUNICIPAL ENG RES INST
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