Integrated engineering and geological surveys at the facility construction of a river crossing of an oil pipeline using horizontal directional drilling

Abstract

The article considers the geological aspects of engineering-geological surveys at the construction site of an underwater river crossing over the Kama River with a length of more than 700 meters. For the first time, an unmanned aerial vehicle has been effectively used to conduct engineering and geological surveys in the study area. The second innovative technology applied at the site was underwater echo sounding of the river bed and bottom. During surveys at the construction site of the crossing, the capabilities of a complex of traditional methods of engineering-geological surveys (geomorphological, geophysical, hydrogeological, physical-mechanical, etc.) were combined with innovative technologies: the use of a drone for reconnaissance and selection of the crossing site and echolocation of the river bottom to ensure minimization of the risks of destruction object. The passage of argillite-like calcareous sandy light hard clays of the Kazan stage (engineering-geological element-8) along the horizon is substantiated.