Pit parameter measuring method

Abstract

The invention discloses a pit parameter measurement method and belongs to a landform measurement method. The method comprises the following steps of carrying out satellite remote sensing interpretation on pit landform; performing on-site investigation and determining a data acquisition area; performing airworthiness condition analysis and route planning; allowing an unmanned aerial vehicle carrying an optical sensor to perform data acquisition; transmitting a flight instruction and performing real-time monitoring, performing breakpoint endurance, performing course coverage, ending the data acquisition of the optical sensor, and transmitting acquired data; checking and processing the acquired data, processing the acquired data through aerial triangulation software, and establishing a three-dimensional model; performing pit monomer extraction; and measuring and analyzing various typical parameters of the pit three-dimensional landform model. According to the method, the pit full view including a pit opening, a pit wall and a pit bottom can be obtained, the problem that manual measurement cannot be conducted comprehensively is solved, full-coverage, high-precision and multi-view pit appearance data are obtained, the measurement parameters are comprehensive, the accuracy is high, and permanent measurement data are provided for protection, development and utilization of the pit appearance.

Description

technical field [0001] The invention relates to a method for measuring tiankeng parameters, in particular to a method for measuring tiankeng parameters based on an unmanned aerial vehicle. Background technique [0002] A tiankeng is formed by a karst cave hall in a carbonate rock area, with a depth and diameter of not less than 100 meters, and / or a volume greater than 1 million cubic meters, surrounded by or most of the surrounding walls and cliffs, and may have once communicated with an underground river karst cave extra large funnel. Tiankeng is a peculiar and spectacular negative terrain landscape in karst areas. It is distributed all over the world. There are more than 200 Tiankengs that have been discovered so far. China is the country with the largest distribution of Tiankengs in the world. In my country, they are mainly distributed from the south of Hanzhong to that Karst area north of the slope. From the definition, classification, and morphological development of t...

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Problems solved by technology

[0003] The tiankeng is a huge negative terrain surrounded by steep cliffs. It is difficult to accurately and quickly obtain a series of tiankeng landform parameters by traditional measurement methods. Due to the lack of tiankeng measurement techniques, the classification, formation evolution and comparative research of tiankengs are limited. Its development, utilization and protection also lack the support of tiankeng foundation data

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