Multibeam Sonar Survey of a Brine Cavity (H222)

We were appointed by INEOS Inovyn to survey a brine cavity (H222) of approximately 1.2 million cubic metres located beneath a 1,600-hectare brinefield, as part of their brine cavity logging programme. 

Northwich is a historic salt town where brine mining and processing continue today by INEOS to... Read more

Type of work: 3D Laser Scan Survey, Mining and Minerals, Multibeam Sonar Survey

Multibeam Sonar Survey of an Old Mine Shaft and Drainage Adit

We were requested by the Mining Remediation Authority (MRA) to survey a legacy mine shaft and connecting drainage adit following a significant ‘blowout’ event in a residential area. 

The drainage adit, originally built to channel water away from the mine... Read more

Type of work: 3D Laser Scan Survey, Mining and Minerals, Multibeam Sonar Survey

3D Surface and Subsurface Survey of Islington Tunnel

The Canal & River Trust appointed Geoterra to carry out a combined 3D mobile mapping laser scan and bathymetric multibeam sonar survey of the Islington Tunnel on Regent’s Canal.

The tunnel runs beneath Islington, stretching 878 meters from Caledonian Road to... Read more

Type of work: Aerial Ortho-Photogrammetry Survey, Civil Engineering, Multibeam Sonar Survey

Subsurface Laser Scan and Multibeam Sonar Survey of Former Historical Coal Mine Shaft

Geoterra was contracted by The Coal Authority to survey a partially submerged coal mine shaft in the UK. The survey aimed to assess the structural integrity of the shaft, which had partially collapsed and was filling with water after mine... Read more

Type of work: 3D Laser Scan Survey, HD CCTV Survey, Mining and Minerals, Multibeam Sonar Survey, Remote Access Survey, Subsurface Laser Scan Survey

Sonar survey of a water-filled coal mine roadway beneath railway station

A new railway station was due to be constructed in Willenhall, Staffordshire on the Wolverhampton to Walsall mainline.

Historic mine plans indicated that a coal mine roadway was situated directly beneath where the proposed new railway station was to be built.... Read more

Type of work: 3D Laser Scan Survey, Civil Engineering, Mining and Minerals, Multibeam Sonar Survey, Rail

Survey of Submerged Void Beneath Train Station Platform

Geoterra was appointed by Arcadis, Galliford Try and Network Rail to carry out a subsurface multibeam sonar scan survey of a submerged void discovered beneath Platform 4 at Kidsgrove Station in Staffordshire. A surface laser scan would also be carried... Read more

Type of work: Civil Engineering, Multibeam Sonar Survey, Rail