Techniques
Seismic Refraction
Seismic technique is one of the most developed geophysical techniques, routinely carried out for assessment of vital subsurface condition for most of the engineering projects. PARSAN specializes in Seismic Refraction surveys, and has the privilege of being the first company in India to introduce velocity gradient type results, which are substantially more realistic and accurate than typical layered models.
| FEATURES | APPLICATIONS |
|---|---|
| Precise determination of soil thickness. | Bedrock profile, rock quality and depth. |
| Precise determination of seismic velocities. | Thickness of overburden |
| Precise determination of water table in overburden. | Fractures and weak zones |
| Localization and identification of geological units. | Topography of ground water |
| Detailed analysis of soil. | Rippability assessment in mines |
| Great accessibility to rough terrain and remote regions. | Slope stability studies |
| Pipeline route studies |
| ADVANTAGES | LIMITATIONS |
|---|---|
| Rapid ground coverage. | Velocity increase with depth a pre-requisite |
| Only option in rough remote terrains. | Hidden layer & Blind Zone anomalies |
| Provides continuous profile of subsurface, critical for engineering projects. | |
| Estimation of Dynamic Elastic Moduli like Poisson’s Ration, Young’s Modulus, Shear Modulus. |
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