A blasting demolition method for building longitudinally inclined and collapsing zone by zone

Abstract

The invention discloses a blasting demolition method for longitudinal inclining and area-by-area collapsing of a building. The large building is divided into a plurality of small areas in the transverse direction, the transverse blasting delay time between all the areas is set, meanwhile, the to-be-demolished building needs to be provided with a corresponding blasting gap, longitudinal areas are divided within the range of the blasting gap, the longitudinal delay time is set, and overall, the direction of the transverse areas crosses that of the blasting gap; and a load bearing structure in the gap range is subjected to drilling, explosive charging, packing, networking and detonating, detonating and damaging are conducted area by area according to the delay time of detonators, all the areas are pulled with one another in the air and then sequentially collapse and make contact with the ground, and the longitudinal inclining and area-by-area collapsing technical purpose is achieved. Theblasting demolition method can be suitable for blasting demolition of large buildings complex in environment and structural formation, vibration caused by blasting and collapsing can be effectively relieved, the building is sufficiently disassembled in the air, the breaking cost in the later period is reduced, and the environment-friendly blasting effects of being free of blasting vibration damageand capable of removing residues easily are achieved.

Description

technical field [0001] The invention relates to a method for controlling blasting demolition of buildings, in particular to a method for blasting demolition of buildings longitudinally inclined and collapsed zone by zone. Background technique [0002] Blasting is a high-efficiency and energy-saving technical means. For the demolition of large buildings with high towering structures and complex structures, the blasting construction method has absolute advantages. The existing technical principle of demolishing buildings by blasting is relatively simple, as long as the building collapses, generally one or more blasting gaps are designed in the longitudinal direction, and the corresponding delay time is designed along the direction of the gap. Drill and charge the load-bearing structure, detonate successively by delaying the detonators, use the energy generated by the explosive explosion from the side of the width of the building like "cutting trees" in an instant (actually the...

AI Technical Summary

Problems solved by technology

Therefore, under the current situation, the existing blasting technology has just run into a series of difficult problems, which are mainly manifested in: 1. For buildings with complex structures and large footprints, the existing blasting technology cannot achieve the desired effect 2, the noise that existing blasting technology produces is big, vibration is big, is unacceptable in some complicated environments; The force is generated to cause recoil and damage the surrounding equipment and facilities; 4. After the building collapses, it is not fully broken, and it needs to be broken by mechanical equipment, which costs a lot

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