One of SLIM’s research interests is to evaluate the consequences of different blasting patterns, mainly initiation times, on induced vibrations. These results will be compared to upstream input parameters (e.g. geology) and downstream KPIs of the mine. These include information about how the material can be loaded and the energy required for crushing the rock in the primary crusher. Therefore a large field-campaign shall provide an extensive dataset for this purpose. Montanuniversitaet, VA Erzberg, 3 GSM and LTU observe the blasts, measure the parameters, analyse the data, create 3D-models and evaluate the findings.
Loading of material at two different places. The digging times and crusher energy consumption will be part of the evaluation. Photo: MUL
Borehole measurements, photo: MUL
The drone is ready to start and gather pictures for 3D-modelling of the blast site. Photo: MUL
SLIM project: 3D-representation of blasted rock mass. Photo: MUL
Large scales test: SLIM launched a first campaign of blasts in El Aljibe (Spain)
Tests offered information about rock-explosive interaction and environmental impact and safety
On June 6, 2017, SLIM project has launched the first campaign blasts in El Aljibe quarry (Spain). The blasts will complete the large scale tests which entail an important part of SLIM project. They will serve as a feedback to complete actions related to rock–explosive interaction, environmental impact and safety.
In June 2017 the first video was recorded during blast No3 carried out in El Aljibe quarry. Seven holes were drilled using a pattern of 2.6 × 3.1 m. The explosive was an emulsion, and electronic detonators were used to get short delay between holes.