The Cornwall Mining Alliance (CMA) met with Mark Hudson of Geoterra Ltd to discuss recent developments in the laser scanning and modelling of mine workings and how a range of techniques could be used to compliment the work of CMA members.
Geoterra Ltd visited Cornwall last week to survey a disused mine shaft near Truro, using a lightweight, probe laser scanner. This specialist equipment is designed to survey voids from boreholes and small surface apertures up to 100m below ground level and can complete a 360° scan with a range of up to 150 metres. Point data captured is accurate to 2 centimetres and can be modelled in 3D to provide impressive results at sites where conventional ground investigations could be difficult or inconclusive. The data can also be combined with surface models, as well as technical drawings, and integrated into Building Information Modelling (BIM) systems.
Data outputs can be used for a range of engineering purposes, including subsidence risk assessments; volumetric calculations; surface loading controls; foundation design; deformation monitoring and mine entry refurbishment. Animated models and 3D printing can also be used to benefit mining heritage projects and provide a powerful tool for effective public consultation and stakeholder engagement.
Cornwall Mining Alliance members offering compatible specialist expertise in the mining sector are keen to explore the use of laser and remote mapping technology for established and new markets. CMA Members took part in a workshop with Geoterra Ltd to identify applications for innovative geospatial surveys on redundant mine sites in the South West, as well as active operations further afield.
Services offered by Geoterra Ltd include:
- 3D Laser Scanning
- Subsurface Laser Scanning
- Subsurface Sonar Surveys
- CCTV & ROV Surveys
- Mobile Mapping Surveys
- Unmanned Aerial Vehicle Mapping & Inspection Surveys – Photogrammetry & Low level LiDAR
- High Precision Satellite Ground Deformation Monitoring
- Structural Deformation Monitoring
- Ground Penetrating Radar Surveys
- 3D Modelling & Visualisation