CHARGE FOR INCITING SEISMIC WAVES Russian patent published in 1998 - IPC

FIELD: explosives. SUBSTANCE: charge has casing filled by explosive material. Casing is made in the form of truncated cone. Diameter of charge at the detonation initiation side is 1.5-2.5 values of critical diameter of explosive material detonation, diameter of the opposite end of charge equals at least 4 values of critical diameter of detonation, and length of charge equals 3-5 values of large diameter. In addition, on the large diameter side, charge may be provided with cylindrical part with length constituting 2-2.5 values of this diameter, total charge length having not to exceed 5 values of largest diameter of charge. Charge can be used when performing explosive-assisted geophysical exploration. EFFECT: enhanced efficiency of seismic prospecting. 2 cl, 2 tbl