Research of application of dynamic penetration eest for improvement of engineering geological investigation possibilities in Ostrava Basin

Abstract

The study deals with a dynamic penetration representing a field survey method using which according to a resistance occurred during penetration of rods provided with a tip into the soils being surveyed their selected physical or mechanical properties and layers interface are investigated. The dynamic penetration is performed so that the rods are driven in by hammer strokes with a specified mass and height of drop, during which time the number of strokes is recorded required for penetration of rods of a specified length (as a rule 10-20 cm). A measured characteristics is a specific dynamic penetration resistance representing the tip resistance in the dynamic penetration test. A study localization is bound to a chosen part of the Ostrava Basin. A goal of the study is an investigation of an application of the dynamic penetration in a chosen part of the Ostrava Basin for needs of improvement of engineering geological investigation possibilities in this area, hereat typical dynamic resistances for corresponding categories of foundation soils were investigated.