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System Analysis of Dust Concentration at the Field of Tunnel Excavation  

Park, Jong-Soon (Department of Environmental Engineering. Chungbuk National Univ.)
An, Dae-Hyun (Department of Environmental Engineering. Chungbuk National Univ.)
Shim, Myeong-Jin (Department of Environmental Engineering. Chungbuk National Univ.)
Jung, Ji-Seung (Shinhan Construction Industrial Co., Ltd.)
You, Jin-O (Construction & Environment Research Team, Kolon E&C)
Um, Myeong-Heon (Devision of Chemical Engineering, Kongju National Univ.)
Kim, Jae-Yong (Department of Environmental Engineering. Chungbuk National Univ.)
Publication Information
Applied Chemistry for Engineering / v.18, no.2, 2007 , pp. 126-129 More about this Journal
Abstract
In order to ruduce traffic-jam, it is requested to extend road. As a result, the construction of tunnels is inevitable considering our mountatinous topography. In tunnel construction work, major contamination materials occur from rock drilling, blasting rock, rock transporting, and short-creat. After rock blasting, a very high concentration of particles over $5000{\mu}g/m^3$ is maintained for 4 h when air is supplied by pans, by which the construction work has to be delayed at least 30 min. Although dry dust collectors are used, the effective operation time span is limited to 3 h. In this work, the behavior of particles in air and use of particle removal instruments are investigated. As a result, it was important to compare efficiencies of dry and hydro dust collectors.
Keywords
tunnel excavation; contamination materials; particles; dust collector; diesel gas;
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