Browsing by Subject "railways tunnels"

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Access status: Open Access ,
Dolnośląskie tunele kolejowe - zabytki techniki
(Wydawnictwa AGH, 2005) Preidl, Wojciech
In his paper have shown genesis of the development of the railway in the south-west and west provinces of Silesia. Described the railways with tunnels are presented their short technical data. Have shown as well perspectives of tunnels further use and possibilities of adoption the tunnels for the tourists purposes. It's significance as a technical heritage, which should be protected from the devastation. Those tunnels are the traditional elements of the regions architecture and landscape, as for example the tunnel in Ogorzelec.
Access status: Open Access ,
Wzmocnienie kamiennego sklepienia tunelu kolejowego za pomocą współpracującej powłoki wykonanej ze stalowych, falistych paneli cylindrycznych i betonu samozagęszczalnego
(Wydawnictwa AGH, 2005) Ryż, Karol
The railway tunnel in Kamionka Wielka, located within the Tarnów - Leluchów line, is at present over 100 years old. It is an arch type stone structure. At the tunnel inlet at the Tarnów side an unacceptable deformation as well as a cracking of the stone lining was noted at the range of several meters. The risk of the collapse of the structure and soil mass was apparent. Moreover separation process between portal and the arch stone lining is going on and there is a possibility that loose stone blocks will fall out from the structure. The described technology of the structure rehabilitation contains both immediate actions and final measures undertaken during further steps of the repair procedure. Immediate strengthening and stabilization of the structure at the zone where structural damage had occurred was performed by inserting of steel arch support of V-section connected to the stone by means of in-glued anchors. Final strengthening at the zone of 30 m and at the tunnel portal consists of a steel shell at the arch zone and the reinforced concrete abutments at the walls. The steel shell is made from bolted corrugated panels. Connection of the shell with the existing tunnel lining is assured by infilling the interface gap with a self-compacting concrete. Presented repair procedure was possible due to the usage of modern measures like bolted corrugated steel panels and self-compacting concrete. At each stage of the rehabilitation procedure, railway traffic can be continued which may be recognized as an important advantage of the presented technology.