A network connection method for directional blasting demolition block slash initiation blasting

Abstract

The invention discloses a directional blasting demolition blocking diagonal initiation network connecting method. A plane of a building needing to be blasted is transversely and longitudinally dividedinto multiple grids; the building is divided into two areas in a width direction; every 2-3 rows of stand columns are formed to one area in a length direction; the first line of areas in the first row of areas are blasted firstly; the first line of areas in the second row of areas and the second line of areas in the first row of areas are the same diagonal areas; the second line of areas in the second row of areas and the third line of areas in the first row of areas are the same diagonal areas; and nonel detonators and explosives in holes are loaded in blast holes according to area blockingdiagonal arrangement principles to form a complete initiation network. The plane of the building is transversely and longitudinally zoned; and the areas are respectively extended in all directions, sothat the building is twisted and pulled in air in the blasting process, the stand columns, beams and floors are bent to deform, and are shorn, extruded and impacted in succession to fully decompose,the blasting vibration and the collapse vibration can be reduced to prevent downward sitting and backward sitting, and the crushing and decomposition costs after blasting can be reduced.

Description

technical field [0001] The invention belongs to the technical field of blasting demolition of buildings, in particular to a network connection method for directional blasting demolition block slash initiation blasting. Background technique [0002] At present, the domestic blasting network for directional blasting demolition mainly adopts row-by-row blasting network. The basic principle of this blasting network is to use the blasting energy to destroy the load-bearing columns or walls of the building, forming a "blasting height difference", which makes the center of gravity of the building deviate. The scope of the building's load-bearing structure will cause the whole building to lose stability, collapse and disintegrate. The delay time between the first few rows of this detonation network is generally short, and the delay time of the last row is slightly longer, and some even hinge rows do not blast. Its advantage is that the network is simple, and it is not easy to insta...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a directional blasting demolition block that can effectively reduce the impact of building demolition blasting collapse vibration on surrounding facilities, prevent building recoil from damaging the back protection in the direction of collapse, and solve the problems of poor disintegration effect and high crushing cost. Slash detonation network connection method

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