FIELD: construction.
SUBSTANCE: railway subgrade analysis comprises preliminary processing of available data to disclose abnormal sections and select control drilling points and additional geo-radiolocation profiles. Geo-radiolocation analysis allows isolating layers with different dielectric factors. Drilling is performed in not only within disclosed abnormal zones but also on every kilometre of analysed section. Track bed is manually drilled to obtain data on broken stone layer properties, particle sizes and lithology, mechanical grading, moisture content, density and soil solid-to-liquid ratio. Data obtained are interpreted to plot them onto exaggerated longitudinal track section.
EFFECT: higher efficiency of analysis, reduced railway repair costs, repair materials savings.
3 dwg
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