Method for detecting integrity of rock mass of deep-buried tunnel

A detection method and integrity technology, applied in the direction of electric/magnetic exploration, measuring device, sound wave re-radiation, etc. Buried tunnel exploration and other problems, to achieve the effect of accurate rock mass integrity coefficient, high matching degree, and wide application range

Active Publication Date: 2012-06-13
武汉铁四院工程咨询有限公司
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Problems solved by technology

[0004] However, on the one hand, since the velocity of the micro-weathered surface in the bedrock below the surface is obtained by elastic wave exploration, the detection depth of elastic wave exploration method is limited, so it cannot be used for the exploration of deep tunnels
On the other hand, since the seismic source used in the elastic wave detection method is inflammable and explosive, the elastic wave detection method cannot be used in tunnels near cities and villages.
Moreover, flammable and explosive materials are prone to forest fires, thus causing safety problems

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  • Method for detecting integrity of rock mass of deep-buried tunnel
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  • Method for detecting integrity of rock mass of deep-buried tunnel

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Embodiment Construction

[0018] Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements.

[0019] Such as figure 1 As shown, the detection method of the integrity of the deep tunnel rock mass in this embodiment includes the following steps:

[0020] Step S1, measuring the high-frequency magnetotelluric field signal of the surface to be measured by the high-frequency magnetotelluric depth sounder;

[0021] Step S2, performing noise suppression, data screening, static correction, terrain correction, resolution matching and data inversion on the high-frequency magnetotelluric field signal to obtain rock mass resistivity;

[0022] Step S3: Obtain the logging resistivity curves at different depths of the borehole by performing a resistivity logging experiment on the deep-buried tunnel;

[0023] Step S4, superimpose and compare the logging resistivity curve and the high-frequency magnetotelluric resistivity curve b...

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Abstract

The invention discloses a method for detecting the integrity of a rock mass of a deep-buried tunnel. The method comprises the following steps of: (1) obtaining a high-frequency magneto-telluric field signal of an earth surface to be detected; (2) carrying out pre-processing on the high-frequency magneto-telluric field signal to obtain a high-frequency magneto-telluric resistivity curve; (3) revising the high-frequency magneto-telluric resistivity curve and obtaining a real resistivity of the rock mass according to the revised high-frequency magneto-telluric resistivity curve; and (4) calculating an integrity coefficient of the rock mass according to the real resistivity of the rock mass. The method for detecting the integrity of the rock mass of the deep-buried tunnel, disclosed by the invention, has the advantages of wide applicable range, high accuracy and high safety.

Description

technical field [0001] The invention relates to the field of geological detection of deep-buried tunnels, in particular to a method for detecting the integrity of deep-buried tunnel rock mass. Background technique [0002] Tunnel engineering is often encountered in the construction of railways, highways, and water conservancy projects. In order to improve the quality of tunnel engineering and ensure the safety of tunnel engineering construction, in the tunnel design stage, it is first necessary to investigate the surrounding rock mass of the tunnel to obtain the surrounding rock mass. The basic physical and mechanical data of the rock mass, such as: the geological structure and physical and mechanical properties of the rock mass, so as to provide the basis for the accurate division of the rock mass grade and the evaluation of the rock mass quality, and then provide the safety guarantee and scientific basis for the tunnel construction. Among them, the integrity of the rock ma...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/08G01V3/38
Inventor 化希瑞曹哲明刘铁朱正国林昀段圣龙
Owner 武汉铁四院工程咨询有限公司
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