Method for controlling building blasting dust

Abstract

The invention discloses a method for controlling building blasting dust. An inner air curtain and an outer air curtain are used for controlling dust, the blasting dust is controlled mainly by the inner air curtain first so as to prevent from overflowing, secondary sedimentation is performed on the dust which is not controlled by the inner air curtain between the inner air curtain and the outer aircurtain, and finally, the building blasting dust is located in the outer air curtain so as to prevent the dust from discharging; a water bomb is put before building blasting so as to form a closed space together with the inner and outer air curtains, so that the relative humidity in the closed space reaches more than 95%, and dust suppression during building blasting is facilitated. The water bomb and a liquid nitrogen bomb are put simultaneously and alternately after building blasting; the contact with the dust can be quickly realized, the surface of the dust is wrapped, additionally, the dust is quickly condensed under the action of liquid nitrogen fog drop, the descending speed is increased, and the dust settling effect is guaranteed. The method has the advantages of high dust collecting speed, good dust collecting 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