Abstract

Technical means of engineering-geological research at the site of occurrence are the most complex and expensive equipment, requiring special equipment for their operation in conditions of high hydrostatic pressure and aggressive environment, the corresponding program of the movement of the escort vessel, remote control of research devices, transmission and registration of received data. The complex of methods and means for measuring the physical and mechanical properties of bottom soils in natural occurrence includes stamp tests of soils; measurement of resistance to rotational shear with an impeller; penetration logging; static and dynamic sounding; long-term studies with bottom installations; radiometric methods of testing soils; measurement of physical characteristics of soils; bottom exploration by gliding submersibles. This article discusses devices and methods for point testing of underwater soil in situ by static, dynamic and gravity sounding.

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