Developing dual-surveillance based networks for intelligent tunnel management

Li Yen Hsu*, Shin Shin Kao, Hsun-Jung Cho

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Although more than 100-kilometer-long tunnel structures are considered in many areas including the Taiwan Strait, the risk challenges of long tunnels, including sabotage / terrorism, need be concerned accordingly. Hence, establishing SCADA networks with distributed intelligence and real-time fault-tolerance mechanism is worthwhile for long tunnels. Besides, the dual-surveillance system can be featured with better functionality just as the human beings can have better vision by two eyes instead of by one in addition to node fault-tolerance. For professionals' interest, the features of the bipartite GHT network are proofed with graphs: GHT(m,n,0) / GHT(m,n,n/2) is 1-edge hamiltonian if n4, and GHT(m,n,0) / GHT(m,n,n/2) is 1p-hamiltonian if and only if either n≥6 or m = 2 and n≥4. Therefore, the proposed GHT-SCADA network prototypes can be dual-surveillance based, with optimal degree (3 connected links to a node) and have both nodes' and links' fault-tolerance as well as a mechanism supporting orderly inspection and maintenance. Such reliable SCADA networks are not only for preventing disasters, but also actively for best judgment and control of incidents in tunnels.

Original languageEnglish
Pages (from-to)415-416
Number of pages2
JournalTunnelling and Underground Space Technology
Issue number3-4
StatePublished - 1 Jan 2006


  • Generalized honeycomb torus (ght)
  • Honeycomb rectangular torus (hret)
  • Intelligent transportation systems (its)
  • Supervisory control and data acquisition (scada)

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