A combined geophysical method for detecting hidden dangers in seawall engineering

Abstract

The invention discloses a method for comprehensively geographically exploring hidden trouble of seawall engineering. The method includes exploring conductivities a seawall body at the depths of 7.5m and 15m by the aid of ground conductivity meters at exploration intervals of 10m, primarily processing monitoring data and initially locating regions corresponding to points with abnormal conductivity values; acquiring precise images of geological conditions of the regions with abnormal conductivities of the seawall body by the aid of ground penetrating radar and processing the images; analyzing possible reasons for the abnormal conductivities according to the acquired underground images, which are reflected by the ground penetrating radar, of the regions with the abnormal conductivity values, and finding out distribution of abnormal substance layers and local abnormal substances which affect abrupt change of permeability coefficients of the seawall body; rectifying and reforming an embankment with the geological safety hidden trouble. The method has the advantages that the ground conductivity meters are used with the ground penetrating radar, so that merits of instruments can be mined to the greatest extent, shortcomings of the instruments are overcome, the hidden trouble and leakage can be expectedly quickly and effectively explored, and danger can be managed in a targeted manner.

Description

technical field [0001] The invention relates to the field of seawall engineering hidden danger detection, in particular to a composite geophysical exploration method for seawall engineering hidden danger detection. Background technique [0002] Traditional hidden danger detection methods such as geological drilling and manual detection cannot quickly and accurately determine the location of hidden dangers, and drilling is localized and destructive. With the development of technology, in the past 20 years, non-destructive detection based on physical detection method has achieved many research results in hidden danger detection technology of embankment engineering. It is difficult for the instrument to be completely suitable for the detection of hidden dangers in embankment engineering. Using different instruments for simultaneous detection, mutual verification and supplementation can effectively improve the accuracy and reliability of interpretation, which is a reasonable dev...

AI Technical Summary

Problems solved by technology

[0002] Traditional hidden danger detection methods such as geological drilling and manual detection cannot quickly and accurately determine the location of hidden dangers, and drilling is localized and destructive

With the development of technology, in the past 20 years, non-destructive detection based on physical detection method has achieved many research results in hidden danger detection technology of embankment engineering. It is difficult for the instrument to be completely suitable for the detection of hidden dangers in embankment engineering. Using different instruments for simultaneous detection, mutual verification and supplementation can effectively improve the accuracy and reliability of interpretation, which is a reasonable development direction for dike hidden danger detection

Although there is no essential difference in principle between the physical detection method of seawall engineering safety and the hidden danger detection of embankment, due to the particularity of the project itself and environmental conditions, there are differences in field test technology and data interpretation and judgment.

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