The goal of
the project is to do a controlled pilot study to evaluate the method of using a
metamaterial (ground filter) to reduce vibrations in dwellings nearby quarries
where blasting is done. The method could be useful for the trade as it may
contribute to reduce the disturbance of the surroundings. It may contribute to
the more positive view on quarries. Both the neighbours and the companies would
benefit from the results. The method may also be used in many other contexts
and trades.
The ground filter is produced by drilling holes in the
bedrock between the blasting zone and the dwellings that should be protected
from high ground vibrations. The ground filter reflects parts of the ground
wave thereby reducing the ground wave energy and ground vibrations at the
dwelling. Previous practical experiments and scientific studies have shown that
the method works for other materials. The method has not been tested for
quarries with bedrock where large variations in material properties occur due
to material composition, cracks, crack zones and tensions. Applied Acoustics
contributes with estimation of the varying properties of the bedrock, design of
the filter and evaluation of the filter in field.
SBUF Development
Fund of the Swedish Construction Industry
1.200.000 kr / 130.000 euro
Swerock (Main project
manager)
NCC
Volgers
Akustikverkstan
Impakt
Migmatit