A Headrace Tunnel Reconstruction in Turkey

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00337478" target="_blank" >RIV/68407700:21110/19:00337478 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.14311/APP.2019.23.0025" target="_blank" >https://doi.org/10.14311/APP.2019.23.0025</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/APP.2019.23.0025" target="_blank" >10.14311/APP.2019.23.0025</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A Headrace Tunnel Reconstruction in Turkey

Popis výsledku v původním jazyce

The operation of a hydro power project in North Turkey started in 2015. The project included the 12 km long headrace tunnel. An 8 km long lower (output) tunnel section was excavated by double shield (TBM technology) with 8.7 m ID. Due to problems with the mechanised excavation, a 4 km long upper (input) tunnel section was excavated as a counter drive done conventionally by the Drill and Blast (D&B) method with single shell lining generated from fibre reinforced sprayed concrete and rock bolts. Significant operational problems were observed in September 2016, about 16 months after its commissioning. The flooded tunnel was initially investigated by underwater Remotely Operated Vehicle (ROV) which indicated significant collapses in the tunnel. Operation of the power station had to be stopped and water from a supply dam at the headrace tunnel inlet had to be discharged to enable dewatering and inspection of the tunnel. Consequent investigation revealed three major collapses and a considerable variety of other damages in the D&B section of the tunnel, and significant damages were also observed in the tunnel section with segmental lining. Repair and strengthening of the tunnel was completed in October 2017, about one year after detection of these problems. A very fast tunnel re-opening was considered a significant success given the scale of damages and access difficulties. This paper is focused on all activities associated with the tunnel repair.

Název v anglickém jazyce

A Headrace Tunnel Reconstruction in Turkey

Popis výsledku anglicky

The operation of a hydro power project in North Turkey started in 2015. The project included the 12 km long headrace tunnel. An 8 km long lower (output) tunnel section was excavated by double shield (TBM technology) with 8.7 m ID. Due to problems with the mechanised excavation, a 4 km long upper (input) tunnel section was excavated as a counter drive done conventionally by the Drill and Blast (D&B) method with single shell lining generated from fibre reinforced sprayed concrete and rock bolts. Significant operational problems were observed in September 2016, about 16 months after its commissioning. The flooded tunnel was initially investigated by underwater Remotely Operated Vehicle (ROV) which indicated significant collapses in the tunnel. Operation of the power station had to be stopped and water from a supply dam at the headrace tunnel inlet had to be discharged to enable dewatering and inspection of the tunnel. Consequent investigation revealed three major collapses and a considerable variety of other damages in the D&B section of the tunnel, and significant damages were also observed in the tunnel section with segmental lining. Repair and strengthening of the tunnel was completed in October 2017, about one year after detection of these problems. A very fast tunnel re-opening was considered a significant success given the scale of damages and access difficulties. This paper is focused on all activities associated with the tunnel repair.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/TE01020168" target="_blank" >TE01020168: Centrum pro efektivní a udržitelnou dopravní infrastrukturu (CESTI)</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Acta Polytechnica CTU Proceedings

ISSN

2336-5382

e-ISSN

2336-5382

Svazek periodika

23

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

6

Strana od-do

25-30

Kód UT WoS článku

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EID výsledku v databázi Scopus

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