Subsurface Laser Scan and Multi-beam 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, Civil Engineering, Land Survey, Mining and Minerals, Sonar Surveys -Multi Beam, Subsurface Laser Scanning, Underground Surveying

3D Laser Scan Survey of Sandstone Rockface Adjacent to Railway Line

Geoterra was appointed by Murphy Group and Coffey Geotechnics to conduct an extensive 3D laser scan survey of a sandstone rock face and surrounding area. The survey area spanned approximately 100 meters along the primary railway line from Manchester to... Read more

Type of work: 3D Laser Scan Survey, Civil Engineering, Laser Scanning, Rail

Underground 3D laser scan survey of second sinkhole and bell pit on playing field

In February 2020, Geoterra surveyed a sinkhole and bell pit that had appeared on Sappers Field in Wooburn Green. This sinkhole and bell pit was backfilled and remediated by Soil Engineering in 2022.

Prior to being a playing field, the... Read more

Type of work: 3D Laser Scan Survey, Civil Engineering, Land Survey, Subsurface Laser Scanning, Underground Surveying

Aerial photogrammetry survey of 21 underground drainage adits

Folkestone Warren is an area of land prone to landslides. In December 1915, a severe landslip at Folkestone Warren, known as The Great Fall, resulted in train derailments and continued rail movement on the Dover to London South Eastern... Read more

Type of work: 3D Laser Scan Survey, Civil Engineering, Land Survey, Rail, UAV Aerial Surveying, Underground Surveying

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, Land Survey, Mining and Minerals, Rail, Sonar Surveys -Multi Beam, Underground Surveying

Subsurface Bathymetric Sonar Survey of the River Irwell

Geoterra was appointed by clients Arcadis and Peel Ports to carry out a subsurface bathymetric sonar scan survey on the River Irwell at Clippers Quay in Salford.

The survey was required to help the clients to ascertain the riverbed levels and... Read more

Type of work: 3D Laser Scan Survey, Civil Engineering, Laser Scanning