A method for measuring the range and depth of a fractured rock mass

Abstract

The invention discloses a method for measuring the range and depth of a fragmented rock mass. The method is to test the range and depth of a fragmented rock mass by means of an infrared camera of an unmanned aerial vehicle. The specific method steps are: (1) manual on-site survey, Preliminary delineation of the scope of the cataclysmic rock mass; (2) Select the cataclysmic rock mass for testing in dry, high temperature and sunny periods; (3) Infrared camera; (4) Image data processing for infrared camera; (6) Determining the depth of each point of the fractured rock mass. The invention adopts non-contact physical detection technology for measurement, which can be used in a wide range of various workplaces, has high speed, is less affected by surface traffic obstacles, and has high test resolution and accuracy; Machine-based infrared measurement, when measuring the range and depth of the fractured rock mass, infrared photography is carried out at the optimal time period, and the range of the fractured rock mass and the depth of the test point can be calculated more accurately.

Description

technical field [0001] The invention belongs to the technical field of geological engineering, and relates to an engineering geological physical survey method, in particular to a method for measuring the range and depth of a fractured rock mass. Background technique [0002] Fractured rock masses are mainly developed in the Tibet Plateau, and their origin is mainly due to the cracking of the rock mass surface caused by ice splitting, frost heave, freeze-thaw, and weathering, and the cracking depth is generally several meters to tens of meters. In water conservancy and hydropower, roadbed and industrial and civil construction and other engineering geological disaster slope management, the determination of fractured rock mass has become an indispensable link. [0003] At present, the detection method of fractured rock mass is usually local geological drilling, flat tunnel and other geotechnical engineering exploration, combined with seismic exploration in engineering geophysic...

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Problems solved by technology

[0003] At present, the detection method of fractured rock mass is usually local geological drilling, flat tunnel and other geotechnical engineering exploration, combined with seismic exploration in engineering geophysical prospecting, inter-hole CT and geological radar and other methods for range and depth detection, but due to The difference in wave velocity between the fractured rock mass and the intact rock mass is small, coupled with unfavorable factors such as poor acceptance conditions for the fractured rock mass, therefore, the detection effect of the existing geophysical prospecting method is not ideal, and cannot meet the requirements of engineering survey and design

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