Method for measuring range and depth of cracked rock mass

Abstract

The invention discloses a method for measuring the range and the depth of cracked rock mass. According to the method, the range and the depth of the cracked rock mass are measured through unmanned aerial vehicle infrared shooting. The method comprises the specific steps that (1) manual site survey is conducted so that the range of the cracked rock mass can be delimited primarily, (2) the cracked rock mass is selected for measurement on a dry and high-temperature fine day, (3) infrared shooting is conducted, (4) image data processing is conducted on infrared shooting, (5) the area of the cracked rock mass is determined, and (6) the depth of each point of the cracked rock mass is determined. A non-contact-type physical probing technology is adopted for measurement, the method can be widely applied to various work sites, speed is high, influence by an earth surface passage barrier is small, and the measurement resolution and accuracy are relatively high; through unmanned aerial vehicle infrared detection, when the range and the depth of the cracked rock mass are measured, infrared shooting is conducted in the best period, and the range and the depths of the measured points of the cracked rock mass can be accurately worked out.

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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