Non-invasive shallow seismic surveys are applied to civil engineering and environmental investigation. Surveys consists in recording and analysis of artificially generated seismic (acoustic) waves; the non-destructive energy source for shallow seismic is i.e. a seismic hammer.
TECHNIQUES
seismic refraction tomography SRT
MASW Multi-Channel Analysis of Surface Waves
EQUIPMENT
TERRALOCK SYSTEM f. ABEM
APPLICATIONS
identification of bedrock depth and structure
mapping thickness of overburden
ground stiffness determination
identification of fractured and faulted areas
detection voids, caverns
slope investigation
Seismic waves, reflected in underground structures are registered by the geophones located on the surface. The course and the time of wave propagation and their deformations depend on the mechanical properties of the geological center connected with lithology, degree of density or the degree of destruction of the original structure.