| 摘要 |
PURPOSE:To monitor the influence of dust and to prevent trouble by providing a suspended dust densitometer and a meteorological observation device nearby the boundary of a construction site and observing the concn. of the dust and its dispersion distribution. CONSTITUTION:Dust densitometers P1, P2, P3, and P4 are provided nearby the boundary line of the building construction site 1. Further, the meteorological observation device is arranged. Further, dust produced by dust generation sources M1, M2, and M3 such as a building machine is detected by the dust densitometers P1-P4, which send data to an observation office T. The meteorological observation device W detects the direction and speed of wind, rainfall, etc., and sends data on them to the observation office T. The observation office T processes those data to calculate the dust concn. and its dispersion distribution. For example, when the direction of wind is as shown by an arrow 3, the calculation result of the dust concn. distribution is shown by the range encircled with a mark 4. Thus, the dust density and meteorological conditions are observed at any time to calculate the dust concn. distribution, so troubles due to the dust are prevented and its scattering is reduced during the construction.
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