Journal of Korean Tunnelling and Underground Space Association (한국터널지하공간학회 논문집)

Korean Tunnelling and Underground Space Association (한국터널지하공간학회)
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Rock fall on tunnel portals

  • OGGERI, Claudio (TUSC, Tunnelling and Underground Space center, Dipartimento di Georisorse e Territorio, Politecnico di Torino) ;
  • PEILA, Daniele (TUSC, Tunnelling and Underground Space center, Dipartimento di Georisorse e Territorio, Politecnico di Torino) ;
  • PELIZZA, Sebastiano (TUSC, Tunnelling and Underground Space center, Dipartimento di Georisorse e Territorio, Politecnico di Torino) ;
  • KIM, Sanghwan (Clivil Engineering in Hoseo University)
  • Published : 2004.12.01
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Abstract

Tunnel portals are often located in areas where the risk of rock fall and/or detachement of rock fragments from rocky slopes is high. In this case it is necessary to design the portals so as to protect the road (i.e. using an artificial tunnel) or to instal structures that are able to intercept falling blocks on the slope. This paper deals with the design problems of these structures and includes a special analysis of net fences which have undergone a remarkable technological improvement over recent years.

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