System Analysis of Dust Concentration at the Field of Tunnel Excavation

터널 굴착시 작업현장의 분진농도 실태조사

  • 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.)
  • Received : 2007.01.31
  • Accepted : 2007.02.14
  • Published : 2007.04.10

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.

Acknowledgement

Supported by : 충북대학교

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