What are the control measures for construction dust?

1) Transport earthwork, garbage, equipment and construction materials, etc. without damaging the roads outside the site. Vehicles transporting materials that are prone to scattering, flying, and leaking must take measures to seal them tightly to ensure that the vehicles are clean. A car wash tank should be installed at the exit of the construction site.

2) During the earthwork operation stage, measures such as watering and covering shall be adopted to ensure that the visual dust height in the operation area is less than 1.5m and does not spread outside the site.

3) During the structural construction, installation and decoration stages, the visual dust height in the working area is less than 0.5m. Covering measures should be taken for stacked materials that are likely to generate dust; powdered materials should be stored in a closed manner; dust reduction measures should be taken when handling materials and construction waste that may cause dust in the site, such as covering, sprinkling, etc.; dust and garbage should be cleaned before pouring concrete Try to use a vacuum cleaner when possible, and avoid using equipment that easily generates dust such as hair dryers; protective measures such as partial blocking, covering, and water spraying can be used during mechanical chiseling operations; when cleaning garbage in high-rise or multi-story buildings, closed temporary special lanes should be set up or containers should be used Lifting.

4) The non-operation area of ??the construction site meets the visual dust-free requirements. Take effective measures to deal with easily flying substances on site, such as sprinkling water, hardening the ground, fencing, dense netting, and sealing to prevent the generation of dust.

5) Before mechanical dismantling of structures, make a dust control plan. Measures such as cleaning up dust, dismantling the body, sprinkling water, and setting up partitions can be taken.

6) Before blasting and demolishing structures, make a dust control plan. Comprehensive dust reduction methods can be adopted, such as cleaning dust, wetting the ground, pre-wetting walls, applying water bags on the roof, storing water on the floor, high-pressure spray water systems on the exterior of the building, erecting dust-proof grilles, and dropping water bombs from helicopters. Choose weather with low wind for blasting operations.

7) The difference between the monthly average concentration of total suspended particulate matter (TSP) measured at the height of the barriers around the site and the urban background value is not greater than 0.08 mg/m3.