Electric shock integrated imaging diagnosis method for compaction quality of soil-rock

A technology of compaction quality and imaging diagnosis, which is applied in the direction of using sound waves/ultrasonic waves/infrasonic waves to analyze solids, etc. It can solve problems such as diagnosis and failure to achieve compaction quality, and achieve convenient testing, high testing reliability, and fast testing speed Effect

Inactive Publication Date: 2008-02-20
CHONGQING JIAOTONG UNIVERSITY
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AI Technical Summary

Problems solved by technology

However, this technology still falls short of the purpose of comprehensive diagnosis of compaction quality

Method used

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  • Electric shock integrated imaging diagnosis method for compaction quality of soil-rock
  • Electric shock integrated imaging diagnosis method for compaction quality of soil-rock
  • Electric shock integrated imaging diagnosis method for compaction quality of soil-rock

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Embodiment Construction

[0011] Refer to Figure 1, an electro-seismic comprehensive imaging diagnosis method for the compaction quality of a soil-rock mixed roadbed. The method includes the following steps: 1) Perform a vibration imaging test on the soil-rock mixed roadbed; 2) Perform apparent resistance on the soil-rock mixed roadbed Rate imaging test; 3) Analyze and process the test signals obtained in step 1) and step 2); 4) Perform imaging inversion on the distribution of road-base wave speed and apparent resistivity to obtain road-base wave speed images and apparent resistivity images; 5 ) Calculate the distribution of subgrade compaction degree to obtain compaction degree image; 6) Diagnose the subgrade compaction quality according to the degree of compaction image.

[0012] On-site vibration imaging test

[0013] Refer to Figure 2 for the on-site vibration imaging test method. The test steps are:

[0014] 1) Place 6-12 vibration pick-ups or geophones on the surface of the soil-rock mixed roadbed. T...

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Abstract

The invention relates to a electric shock integrated image diagnose method of earth-rock mixed foundation compressive quality, which comprises following steps: (1) processing shock image diagnosing on the earth-rock mixed road; (2) processing virtual specific resistance image diagnosing on the earth-rock mixed foundation; (3) analyzing and processing attained detected signal; (4) processing the image inversion on the distribution of foundation wave speed and virtual specific resistance to attain the foundation wave speed image and the virtual specific resistance image; (5) calculating the distribution of foundation compressive degree to attain the image of compressive degree; (6) diagnosing the foundation compressive quality according to the compressive degree image. The invention has the advantages that: it can apply the soil foundation, the earth-rock mixed foundation and the rock foundation; the diagnose depth can reach 40m; it has high reliability of scan section image, solid control and the detecting; the detecting accuracy can reach + / -2%. The invention has high detecting speed which can be processed by microcomputer to attain the 50min / 50m section at real time and process nondestructive inspection on the surface.

Description

Technical field [0001] The invention relates to a highway quality detection method, in particular to an electric seismic comprehensive imaging diagnosis method for the compaction quality of a soil-rock mixed roadbed. Background technique [0002] In recent years, with the rapid development of expressways in the west, in the construction of expressways in mountainous and hilly areas, there will be a large number of high-filled embankments (accounting for at least 30% of the total highway mileage), and its compaction quality It directly affects the quality of highway construction and its service life. At present, the traditional methods of roadbed compaction testing in my country include sand filling method, nuclear measurement method, ring knife method, etc. These methods are only suitable for compaction quality testing of subgrade filled with small aggregate particle size and thin thickness. . For more than 80% of the filled roadbed are soil-rock mixed and rock-filled embankments...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/04
Inventor 赵明阶
Owner CHONGQING JIAOTONG UNIVERSITY
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