Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Risk Evaluation of Tree Root Intrusion into Sewer Network

하수관망의 나무뿌리 침입 리스크 평가

  • Han, Sangjong (Korea Institute of Civil Engineering and Building Technology, Environmental and Plant Engineering Institute) ;
  • Shin, Hyunjun (Korea Institute of Civil Engineering and Building Technology, Environmental and Plant Engineering Institute) ;
  • Hwang, Hwankook (Korea Institute of Civil Engineering and Building Technology, Environmental and Plant Engineering Institute)
  • 한상종 (한국건설기술연구원 환경플랜트연구소) ;
  • 신현준 (한국건설기술연구원 환경플랜트연구소) ;
  • 황환국 (한국건설기술연구원 환경플랜트연구소)
  • Received : 2015.11.02
  • Accepted : 2015.12.23
  • Published : 2015.12.15
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Abstract

The objective of this study is to investigate and evaluate that a roadside tree root intrudes sewer network systems. Two approaches were performed to assess the characteristics of tree root intrusion. First, the characteristics of tree roots that had invaded sewers were directly observed by means of closed-circuit television inspection robot. Second, the intrusion proportions of tree root into rain gutters in the sampling area were investigated. As tree species of low intrusion proportions, the results indicated that Ginkgo biloba Linn. and Acer buergerianum Miq. were 1.7% and 4.3%. On the other hand, tree species of high intrusion proportions were Metasequoia glyptostroboides Hu et Cheng, Ulmus davidiana var. japonica Nakai and Zelkova serrata Makino as 22.2%, 20.4%, and 17.6% respectively. In particular, sewers and gutters around Zelkova species should be the focus of maintenance work because of the high proportion of these trees on roadsides.

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References

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