Aerospace data-based geotechnical diagnostics of pipeline
Pipeline systems are geotechnical systems comprising two subsystems: techno sphere which is a package of engineering structures (pipelines, compressor and pumping stations, field construction and infrastructure facilities, roads, etc.) and geosphere as natural-geological environment.
There is a continuous interaction of technical and natural components in the process of pipeline maintenance. Generally it results in negative effects in both subsystems, such as breaking of natural regimen of areas causing ablation, removal of materials, floating-up of pipelines, intensification of corrosion processes, etc.
Geotechnical diagnostics of pipelines is diagnosis of geotechnical system formed as a result of pipeline runs-environment interaction, and its inspection within diagnosis corridors.
The purpose of geotechnical diagnostics (GTD) is working out of measures to ensure reliable and safe operation of linear trunk pipeline portions (LP TP) considering negative impacts of natural and anthropogenic factors.
- detection, positioning and impact evaluation of natural processes and phenomena on LP TP technical state (both direct causes of accidents, resulting in pipeline failure - slides, spring floods, torrents, etc. and sources of long term impacts leading to damage accumulation, thus lowering pipeline reliability as a whole and its structural elements – geodynamic, erosion, cryogenic processes, etc);
- mapping of active pipeline routes;
- detection and positioning of LP TP sections being in unspecified position (floated up and bared);
- detection and positioning of disturbances of guard and minimum distance bands;
- detection, positioning and identification of social, natural and business-industrial pipeline environment;
GTD data allow identification of potential accident sections for rehabilitation and diagnosis scheduling, preparation of recommendations for LP TP and guard band engineering protection
Geotechnical diagnostics of railroad infrastructure objects according to aerospace monitoring materials
GTD purpose – obtaining reliable information about the condition of infrastructure objects of railway transport based on an assessment of their interaction with the environment.
Goals of Geotechnical diagnostics:
- the identification, location and characteristics of railroad defects (deformations), artificial structures, etc.;
- the identification, location and characteristics of sources (natural and anthropogenic) appearance of railroad defects and artificial structures;
- the monitoring of potentially hazardous locations (karst, termokarst, landslides, mudslides, etc);
- inventory of easement area and protective zones;
- defining the boundaries of the environmental pollution areas in case of rail transport accidents.
Identification of potentially dangerous areas
Identification of mudflow dangerous areas
Railway technical state evaluation
Identification of karst hazardous areas
Control of the right of way and protective zones
Geotechnical diagnostics allows complementing the system of comprehensive technical diagnostics of railway infrastructure due to the advantages of the method such as:
- informative value (taking into account the negative impact of natural and anthropogenic factors in the assessment and prediction of technical state of objects);
- efficiency (due to the high speed of information processing);
- the visibility provided by a large swath;
- mapping (the presentation of information on the plan, linked to the coordinates).
The application of geotechnical diagnostics method in comprehensive diagnostics provides:
- evaluation and prediction of technical state of infrastructure taking into account environmental effects;
- increase the validity of planning diagnostic and repair works;
- development of technical and design solutions for engineering protection and stabilization of the subgrade with the influence of natural and anthropogenic factors.