Seismic Refraction Surveys
What is Seismic Refraction?
- Seismic is the measurement of wave’s velocity through and around the earth’s surface, recorded in meters per second (m/s). Different substrates permit slow or fast propagation of sound waves.
- This method along with Reflection and MASW is used to detect any changes in-ground type, bedrock, voids, sinkholes, shafts, ground stiffness, and soil strength.
- Seismic refraction is commonly used for the detailed study of the shallow subsurface (less than 30 meters).
- A proven track record of working along roads and railway’s projects.
- Lithological and structural interfaces
- The level of groundwater table
- Landslide areas, potential slip surfaces
- Boundaries between different weathering zones in the rock mass
- Unfractured solid bedrock and rock rippability in quarries
- Geo-mechanical parameters such as: Dynamic elastic modules, Poisson’s ratio, Crack’s anisotropy
