Positioning
of the drill holes
Cracking always occurs in the direction of least resistance. A larger drill hole diameter means more force, shorter reaction time and wider crack formation. Smaller distances between the drill holes mean smaller fragments and a shorter reaction time.
Principle
Cracking always occurs in the direction of least resistance. A larger drill hole diameter means more force, shorter reaction time and wider crack formation. Smaller distances between the drill holes mean smaller fragments and a shorter reaction time.
Disconnect /
Columns
The holes are drilled a short distance apart in a line. Cracking occurs from hole to hole. In this way, objects can be separated or split relatively precisely during blasting work.
Shredding
The holes are drilled in staggered rows in order to obtain the smallest possible fragments. The more drill holes, the smaller the fragments. The cracks form in a criss-cross pattern.
Trench /
Ablation
If there is no free side to displace the material, space must first be created. This is possible either by drilling holes opposite each other at an angle of 50-60° or on one side at an angle of 40-50°. Angle drilling is also suitable if a large-area lowering of the floor level is to be achieved. (cellar etc.)
Release
During rock excavation, the holes are drilled and backfilled in several rows 10-15 cm below the required ground level. This breaks up and loosens the subsoil so that it can then be removed by excavator or, in some cases, by hand. Here too, the swelling explosive works most effectively if the holes are drilled at a slight angle so that part of the force acts upwards.
Quarries
The use of BETONAMIT® in quarries etc. is becoming increasingly important. The requirements for the use and storage of explosives are almost impossible to comply with in many countries, which is why alternatives are increasingly being sought. The optimum application in these areas is highly dependent on the local situation and the material to be blasted. We would be happy to work with you to develop a concept tailored to your needs. (e.g. marble quarrying, granite quarrying, etc.)
