Multi-method constrained inversion and joint interpretation method for unfavorable geological detection in underground engineering

Abstract

The invention discloses a multi-method constraint inversion and combined interpretation method for unfavorable geology detection in underground construction, and the method comprises the steps: takinga rock resistivity change range obtained through drilling as inequality prior constraint information, taking the contour, obtained through a former comprehensive method, of an unfavorable geologic body as spatial structure prior constraint information, and applying the inequality prior constraint information and the spatial structure prior constraint information to a three-dimensional resistivitycross-hole CT inversion equation; executing multi-element information constraint combined inversion; and finally obtaining a refined three-dimensional geologic structure imaging result of a detectionregion. The method which makes the most of various types of information for mutual constraint and combined interpretation is much better than various types of conventional detection methods which depend on the simple contrast and mutual verification, can give full play to the advantages of comprehensive detection to maximum degree, and remarkably improves the detection and recognition and position precision of geologic abnormalities.

Description

technical field [0001] The invention relates to the technical field of underground engineering detection, in particular to a multi-method constrained inversion and joint interpretation method for underground engineering poor geological detection. Background technique [0002] In recent years, my country's underground engineering construction has entered a stage of rapid development. Due to the complexity and concealment of the development and distribution of geological structures, it is difficult to fully investigate the adverse geological conditions in the early stage of construction, resulting in frequent landslides and surface subsidence during the construction process. Geological disasters, once the disaster occurs, the machinery and tools will be destroyed, and the normal construction will be interrupted, and the severe one will cause heavy casualties and huge economic losses, and even some projects will be forced to stop construction. Therefore, how to avoid and deal wi...

AI Technical Summary

Problems solved by technology

However, the detection accuracy of the current single detection method is limited, and the joint detection of "census" and "detailed investigation" using multiple geophysical methods is currently the most widely used method in engineering

[0003] However, most of the current comprehensive detections simply compare and analyze their respective interpretation results, verify and complement each other. There is no mutual connection and information transmission process between different detection methods and data, and there is a lack of systematic and joint interpretation criteria.

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