A method of controlling building blasting dust

Abstract

The invention discloses a method for controlling the blasting dust of a building. The dust is controlled by two layers of an inner air curtain and an outer air curtain. The inner air curtain mainly controls the blasting dust at first to prevent spillage. It is to carry out secondary settlement for the dust not controlled by the inner air curtain, and finally make the dust generated by the building blasting be placed in the outer air curtain to prevent it from leaking out; and put water bombs before the building blasting to form an airtight seal with the inner and outer air curtains Space, so that the relative humidity in the confined space reaches more than 95%, which is helpful for dust suppression during building blasting. Water bombs and liquid nitrogen bombs are released simultaneously and alternately after building blasting; they can quickly contact with dust and wrap on the dust surface, and at the same time, under the action of liquid nitrogen mist, the dust condenses quickly, speeding up its descent speed and ensuring dust fall Effect. The invention has fast dust removal rate, good dust removal effect and wide practicability.

Description

technical field [0001] The invention relates to a method for controlling building blasting dust, which belongs to the technical field of dust range control. Background technique [0002] For the demolition of urban abandoned buildings, blasting is one of the most commonly used and most effective methods. Blasting and demolition of buildings in densely populated areas of the city will generate a large amount of dust at the moment of detonation and after the collapse of the building; The objects are covered by dust, which not only seriously affects the normal production, life and health of the residents near the blasting site, but also causes heavy pollution to the surrounding buildings. The dust composite material produced by building blasting has good water absorption. Taking advantage of this feature, some existing buildings have used the dust suppression technology of arranging water pools on the ground before blasting and hanging buckets on the roof in the blasting dust ...

AI Technical Summary

Problems solved by technology

However, the above-mentioned dust control technologies are costly and complicated, and because the water bombs splash and spread after being thrown, the dust can only settle in a wide range, so it cannot truly achieve all-round three-dimensional control of building blasting dust , not conducive to large-scale promotion