CHARGING SHAPING HOSE FILLED WITH WELL WATER DURING CHARGING Russian patent published in 2024 - IPC F42D1/08 F42B3/87 

FIELD: mining.

SUBSTANCE: group of inventions relates to mining industry and can be used in blasting operations both in dry wells and in flooded wells. According to the first version, the charging shaping hose includes a charging part and a face part with a diameter equal to the well diameter, which are made as a whole. On the surface of the charging part there are pockets for placing the primer and for placing the cargo. In its lower end part there is a hole, at the same time the hole area is chosen so that volumetric flow rate of water through it is not less than 0.5 dm³/s, and the maximum equivalent diameter of the hole does not exceed 0.85 of the well diameter. Charging part is made in the form of a cone, where the upper part of the cone, which is connected to the face part, has a diameter which is calculated depending on the strength of the rock by the formula. According to the second version, the charging shaping hose includes a charging part and a face part made as a whole. On the surface of the charging part there are pockets for placing the primer and for placing the cargo. In its lower end part there is a hole, at the same time the hole area is chosen so that volumetric flow rate of water through it is not less than 0.5 dm³/s, and the maximum equivalent diameter of the hole does not exceed 0.85 of the well diameter. Face part is made in the form of a cone, where the diameter of the upper part of the cone is equal to the diameter of the well, and the lower part of the cone has a diameter calculated by the formula. Charging part of the hose has the form of a volumetric figure consisting of an upper cylindrical part connected to the face part of the sleeve, made with a diameter equal to the diameter of the lower part of the face hose, which is connected to cylindrical part corresponding to zone of intersection of strong layer of rocks, made with diameter d₁, which is calculated depending on strength of rock by formula. Face part is connected to the conical part of the sleeve, the lower diameter of which is equal to the diameter of the well; at that, connection of the cylindrical surfaces and the cone-shaped surface is carried out by means of conical surfaces, the guides of which make angle of 30-40 degrees with the charge axis.

EFFECT: increased reliability of charging operations due to elimination of possibility of compression by the hose of a charging hose and increased efficiency of explosion due to imparting optimum shape to the column of charge.

2 cl, 4 dwg, 1 tbl, 2 ex