is an easy-to-use system for bench face profiling and blast design based on three-dimensional images.
After setting up field markers at least two photos are taken using a pre-calibrated digital SLR camera.
From the photos a three-dimensional image of the bench face is generated by purpose built software. The result is a metric 3D image representing a dense three-dimensional survey of the rock surface.
Using a dedicated software component the geometry of the blast is planned and optimized taking the actual bench face geometry into account. This is supported by the integrated computation of the real (minimum) burden.
The resulting plan views and profile plots support drilling and loading, and provide comprehensive documentation.
The high quality results allow for rock mass characterisation while planning the blast.
When doing a survey/blast planning with BlastMetriX3D the following parameters are immediately available:
3D image of a bench face together with planned boreholes and visualised profiles. In addition to the geometric blast planning, the quality of the rock surface becomes assessable. From the 3D image weak zones or more fractured zones are rated in a straightforward manner.
Colour-coded visualisation of burden over the entire bench face (categories configurable) highlights light burden areas (red zones).
Drill pattern with minimum burden diagram of selected borehole as well as geometric parameters such as length of borehole, inclination, location of collars etc. Each hole is individually adaptable; profiles, minimum burden diagrams, and colour-coded burden over the entire area serve as data basis.
Large blast sites (latitude several hundred metres) or corners are acquired by merging several images.
When capturing a corner several imaging locations are required. The software merges them without using any special markers.
3D image of corner with colour-coded burden over the entire area. In this case the importance of a true 360° search for the minimum burden becomes particularly evident as otherwise light burden zones around the corner would be missed.