Water pressure blasting method employing angle steel-steel welded drum

Abstract

The invention discloses a water pressure blasting method employing an angle steel-steel welded drum. The water pressure blasting method comprises the following steps: step 1, selecting long angle steel with the same model as to-be-blasted angle steel; step 2, performing butt-welding on the long angle steel and the to-be-blasted angle steel in a designed blasting position to obtain a square tube, and welding a steel plate at a bottom tube orifice; step 3, cutting a cutting seam every 10 cm on corners of the to-be-blasted angle steel and the welded angle steel; step 4, cutting a cutting seam every 10 cm on two side surfaces of the angle steel, and sealing weld joints with glue; step 5, taking a PVC tube, and winding two iron wires at the two ends to form crossed fixing devices; step 6, placing the PVC tube into the welded drum; step 7, filling the welded drum and the PVC tube with water; step 8, fixing an igniting primer to a string, and enabling the primer to sink to a designed position; and step 9, performing priming. The water pressure blasting method is general in blasting supply, remarkable in blasting effect and small in endangering degree of a blasting harmful effect.

Description

technical field [0001] The invention belongs to the technical field of engineering blasting, and relates to a blasting demolition method for angle steel components and structures, in particular to a hydraulic blasting method for welding angle steel structures into cylinders. Background technique [0002] When demolishing steel dielectric components or buildings by blasting, because the structure itself is hollow or even plate-shaped, it is impossible to drill holes and blast, and only the blasting process of externally applied shaped charges can be used. [0003] However, blasting with externally applied shaped charges has obvious technical defects: [0004] 1. High-velocity explosives are mostly tubular products. At the same time, the shaped charges processed by high-velocity explosives can only be used for blasting and cutting plates, that is, they can only cut slits on steel plates and cannot produce large openings; [0005] 2. When the externally-applied charge is blast...

AI Technical Summary

Problems solved by technology

[0004] 1. High-velocity explosives are mostly tubular products. At the same time, the shaped charges processed by high-velocity explosives can only be used for blasting and cutting plates, that is, they can only cut slits on steel plates and cannot produce large openings;

[0005] 2. When the externally-applied charge is blasted, the explosives close to the demolition object are partially concentrated on one line, and most of the energy of the explosive that is not close to the demolition object does not directly act on the demolition object, and most of it does useless work, resulting in explosion shock waves, blasting Flying rocks and noise are not easy to prevent and control, and cannot be implemented in complex residential and production environments

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