Abstract
Linear engineering facilities, such as gas transportation systems, extend from 30 to 500 metres in width and several hundred kilometres in length. Such routes pass through areas characterized by sufficiently diverse engineering, geological, geocryological and seismotectonic conditions. The safe and reliable functioning of gas transportation systems is ensured by their regular monitoring to prevent the development of hazardous exogenous geological processes. In particular, when monitoring ice formation, the greatest efficiency can be achieved by using unmanned aerial vehicles for low-altitude aerial surveys. In this research, remote sensing methods based on unmanned technologies were applied to assess the aufeis hazard in a section of the Power of Siberia gas pipeline in South Yakutia. The authors’ successful experience of using unmanned systems during an aeromagnetic exploration of iron ore deposits in South Yakutia was also considered. A series of studies, including georadar and electrical exploration profiling, as well as thermal imaging and high-resolution aerial photography by an aerial complex, was conducted to assess the dynamics of ice development over time in the area under study and to establish the signs of a developing hazardous process.
Highlights
1 Introduction In South Yakutia, a section of the Power of Siberia gas transmission system has been put into operation
The orthophotomaps obtained after processing the data gathered by unmanned aerial vehicles (UAVs) were used for constructing a comprehensive interpretation of geophysical data and calculating the area of icing
The conducted analysis of the causes driving the dynamics of icing morphometric parameters, which were established from the data collected via remote sensing, allowed the dynamics of ice formation to be investigated
Summary
In South Yakutia, a section of the Power of Siberia gas transmission system has been put into operation. Previous research highlighted the complex engineering and geological conditions for the passage of the route in this geographical area [1-6]. Due to the limited volume, this article aims to present only selected data on the monitoring of hazardous exogenous geological processes developing along the route of the main gas pipeline, in particular, ice formation processes. Data on the location of an icing and the nature of its development provide additional information on the composition and structure of the permafrost zone. This information is important for revealing the formation patterns and dynamics of groundwater. The use of ice as an indirect indicator allows the geological, structural and seismotectonic characteristics of the area under study to be elucidated [7-9]
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