Microblasting technology is used when constructing roads, industrial objects, ports, airports, breakwaters, retention dams and other buildings. It enables improvement of large volumes of weak soil in a short time as well as guarantees receiving first rate strength parameters.

Microblasting technology employs the energy of small explosive charges placed on surface, laid underground or just above the bottom of the water body.

    

 

Loose non-cohesive soil improvement (DDC – Deep Dynamic Compaction)

Microblasting causes saturated subsoil compaction. Thanks to excessive pressure in the soil pores, previous structure of non-cohesive soil is destroyed and after a momentary liquefaction the particles settle in a denser configuration while water filters up to the surface. Repeating of blastings in series supports these processes. Microblasting may be successfully applied underwater as well as on land.

 

Saturated organic soil improvement (DDR – Deep Dynamic Replacement)

Microblasting technology enables significant acceleration of the consolidation process through formation of sand columns which act as drain channel and – at the same time – strengthen the subsoil. Explosive charges are installed in boreholes and detonated in a couple of specially designed sequence series. Additional layer of non-cohesive material, e.g. sand is temporarily liquefied into caverns (cavity formed as a result of the explosion) creating sand columns of big diameter (up to 2 meters).

 

Safety

The microblasting technology is not hazardous to human life or health as well as neighbouring buildings, provided the soil improvement procedure is properly planned, carefully designed and neatly performed by qualified and experienced contractors and the right distance from the explosion site is kept (30-50 meters).