Topographic survey of mineral deposits
Topographic survey of deposit areas at the exploration and pre-production stage, coordinates of boreholes and pits, and tie-in of licence boundaries.
Deposit exploration, reserve estimation and quarry design all require an accurate topographic base. The shape of the terrain determines stripping volumes, pit limits and the location of roads and waste dumps, while the coordinates of boreholes and trial pits directly affect the correctness of geological sections and the block model of the deposit.
Depending on the area and relief, the survey is carried out at 1:500–1:2000 scale with 0.5–1 m contour intervals. On large or hard-to-access sites, drone photogrammetry is combined with ground control points measured by GNSS RTK, giving an orthophoto and a dense digital terrain model in a short time. Exploration boreholes, pits, trenches and existing workings are coordinated with GNSS, and the corner points of the licence area are located or restored on the ground.
Results are delivered in the national coordinate system or the system required by the client (for example WGS-84 or UTM zone 39N) and in formats suitable for geological software. This material later serves as the initial state for mine surveys of the quarry and makes it possible to calculate the first production volumes.
When you need it
- Preparation for geological exploration
- Topographic base for reserve estimation
- Quarry design
- Locating licence area boundaries on the ground
- Coordinating exploration boreholes and pits
What's included
- GNSS control network
- Topographic survey or drone aerial survey
- Coordinating boreholes, pits and trenches
- Locating licence area corner points
- Digital terrain model and orthophoto
- Topographic plan
How we work
- Agreeing site boundaries, scale and coordinate system
- Setting up the control network
- Field survey and borehole coordination
- Office processing and modelling
- Delivery of materials
Deliverables
- Topographic plan of the deposit (DWG, PDF)
- Digital terrain model and orthophoto
- Coordinate list of boreholes and pits
- Coordinates of licence area corner points
