SI's and Geophysics
We've had a busy couple of weeks with multiple sites of various size and scope, from window sampling to rotary cored drilling of mining-affected sites. We've also been utilising Cone Penetration Testing (CPT) at several sites to complement the drilling works.
Prior to the investigations at the mining-affected sites, we have been able to perform Electromagnetic Induction surveys to identify any potential mineshafts that may be present, with further investigations using Ground Penetrating Radar (GPR).
We've also been out with the Continuous Surface Wave System (CSWS) as part of validation works for a newly-prepared development platform near Fort William. The surface wave tests measure the velocity of set frequencies of Rayleigh waves through the subsurface and allow calculations of low-strain shear stiffness to be made. We have also installed settlement gauges to monitor how the platform material will settle in the next few months.
We have been involved in this site from the outset, and helped create a 3D model of the peat thickness overlying the site area using a low frequency GPR unit towed by an Argocat.