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Tunnelling

Milestones
STUTTGART 21 FILDER TUNNEL: TbM dia. 10.8 m, length 2 x 9.3 km
bIEL bY-PASS: 1 st EPb large shield in Switzerland
dia. 12.6 m, length 6.9 km
FINNE TUNNEL: Erfurt – Leipzig/Halle rail link, TbM dia. 10.8 m,
length 2 x 6.8 km
RAIL TUNNEL H3-4: Slurry shield dia.
13.0 m, length 5.7 km
WIENERWALD TUNNEL: 1 st TbM drive for Austrian Railways, dia. 10.7 m,
length 2 x 10.8 km
METRO LINE U2/5 VIENNA: Slurry shield
dia. 6.8 m, length 1.7 km
WIENTAL SEWAGE COLLECTOR:
EPb shield dia. 8.6 m, length 2.6 km
LÖTSCHbERG bASE TUNNEL:
Steg + Raron, TbM dia. 9.4 m,
length 8.7 km and 10.3 km
WALGAU HYDRO POWER SCHEME:
TbM dia. 6.3 m, length 10.5 km
POWER TUNNEL IN IRAN (Jiroft, Minab)
2
2011
2009
2008
2007
2006
2004
2003
2000
1999
1998
1990
1984
1980
1975
1974
1972
1971
STUTTGART 21 ObER-/UNTERTÜRKHEIM: Two tubes, length 5.6 km each
S10 GÖTSCHKA TUNNEL: Largest project implemented by Tunnelbau alone,
two tubes, length 4.4 km each
HANNOVER – WÜRZbURG RAIL LINK:
Kaiserau | Hainbuch | Espenloh | Ganzberg | Landrücken Süd
ARLbERG TUNNEL WEST
TAUERN TUNNEL 1 ST TUbE
EIERbERG TUNNEL: Twin-track rail tunnel,
length 3.7 km
OSTERbERG TUNNEL: Two single-track
tubes, length 2.2 km each
TAUERN TUNNEL, 2 ND TUbE: Two-lane road
tunnel, length 5.8 km
LAINZER TUNNEL, LT 33: Twin-track rail
tunnel, length 2.5 km
LIMbERG II: Pumped-storage scheme,
500 MW capacity
METRO LINE U2/1 VIENNA: Tunnelling beneath Danube Central Canal, protected
by artificial ground freezing
S6 SEMMERING TUNNEL: Road tunnel with
two tubes, length 3.5 km each
S6 SPITAL/SEMMERING: Road tunnel with two tubes, length 2.5 km each
GEISbERG TUNNEL: Twin-track rail tunnel, length 3.8 km
SÄUSENSTEIN TUNNEL: Twin-track rail tunnel, length 4.6 km
REUTERbERG TUNNEL: Road tunnel, length 1.4 km
SCHÖNRAIN TUNNEL: Twin-track rail tunnel, length 3.9 km
METRO CONSTRUCTION VIENNA

Foreword
PORR is among the leading construction contractors in Europe
in all domains of underground construction, from conventional
tunnelling through to high-tech mechanical tunnel
driving.
Tunnelling is one of those construction disciplines which call
for the utmost specialist competence. Every metre of tunnel
advance may confront tunnellers with entirely unforeseen
situations, which need to be handled with skill and expertise,
and always giving the greatest priority to safety.
Experience, competence and innovative involvement in finding
solutions to exceedingly demanding challenges combine
to make PORR a reliable and much sought after partner.
Osterberg Tunnel
Working programme
1 | Company profile 4-5
The development of PORR Tunnelbau
Prospects
2 | Traffic tunnels 6-7
Road tunnels
Rail tunnels
Metro construction
3 | Infrastructural projects 8-9
Urban infrastructure
4 | Other underground work 10-11
Galleries. Shafts. Caverns. Power-plant construction.
5 | Technologies 12-15
Conventional tunnelling techniques
Mechanical tunnelling using tunnel boring machines (TbM)
Mechanical tunnelling using pipe-jacking method
3

Finne Tunnel, Germany
1 | Company profile
The development of PORR Tunnelbau
PORR Tunnelbau originated in a special department of PORR AG. The year 1997
saw the fusion of PORR AG’s and TEERAG-ASDAG AG’s tunnelling departments
to form a highly qualified organisation combining the know-how, the economic and
technical competences and the capacities of two large companies boasting more
than 100 years’ experience. It merged with Porr bau GmbH in 2012.
Finne Tunnel, Germany Gfäll Tunnel, Tyrol
4
Wienerwald Tunnel,
Vienna – Lower Austria

Rail tunnel H3-4, Tyrol
Prospects
A10 Tauern Tunnel, 2 nd tube, Salzburg Lötschberg base Tunnel, Switzerland
Tunnelling will further grow in importance as a branch of civil engineering. Space
for providing infrastructural facilities will continue to become scarcer in the large
population centres, and people are getting increasingly sensitive about the consequences
of traffic. In order to come to grips with urban traffic problems and the
growing demand for motorways, expressways and rail networks, transport facilities
are increasingly going underground.
Rail tunnel H3-4, Tyrol
5

Wienerwald Tunnel, Vienna – Lower Austria
2 | Traffic tunnels
Road tunnels
In order to comply with the rapidly increasing demand for motorways and expressways
in Europe, PORR Tunnelbau has so far contributed 57 road tunnels totalling
more than 126 km in length and has played an essential role in the development of
tunnelling methods.
Rail tunnels
The substantial growth in rail traffic implies the need for building new rail tunnels
and developing and refurbishing existing structures on the national and international
S35 expressway, Styria Lainzer Tunnel, Vienna
Metro, Vienna
6

Citytunnel Waidhofen/Ybbs,
Lower Austria
Öbb birgl and Kenlach Tunnels,
Salzburg Metro, Vienna
networks. Rail traffic holds all the possibilities for environmentally friendly solutions to
transport problems for both passengers and goods. PORR has so far completed 51
rail tunnels totalling approx. 176 km in length. based on all the experience gathered
on those projects, PORR guarantees high quality and the observance of deadlines.
Metro construction
From its very beginning in the 1960s, the Vienna metro development programme
has enlisted PORR’s important contribution. In order to meet the particular needs of
metro construction, PORR has applied all the underground methods available such
as cut-and-cover techniques, conventional as well as mechanical tunnelling and
special methods tailored to the specific needs of a project. Tunnelling beneath the
numerous historical buildings calls for the utmost care and innovative solutions. On
the basis of the exprerience gained with metro projects, PORR is able to offer the
client high quality and economical solutions for new metro lines.
Lainzer Tunnel, Vienna
7

Wiental sewage collector, Vienna
3 | Infrastructural projects
Urban infrastructure
The provision of infrastructural facilities in urban areas needs innovative and efficient
technology. As space is becoming scarce for lines and conduits, we have to go
underground. Trenchless techniques using tunnelling methods hold great promise.
Pipe tunnels are generally provided where open-cut construction meets with obstacles
in terms of insufficient space, environmentally sensitive areas or traffic. This
concerns projects for drinking water supply, district heating, sewerage and highvoltage
cable line projects.
Steinsporn II district heating line,
Vienna Gas pipeline, Vienna
Donau district heating line, Vienna
8

Wiental sewage collector, Vienna
District heating line, Vienna Gas pipeline, Vienna
The minimisation of noise, dirt and space requirements is what makes trenchless
conduit construction the method of the future.
Since the 1970s, PORR has made important contributions to the development of
underground conduit construction. Specialists in mechanical tunnelling have combined
underground conduit construction with pipe jacking to create a method of
technical and economic perfection.
Wiental sewage collector, Vienna
9

Uetliberg water supply tunnel, Switzerland
4 | Other underground
work
Galleries. Shafts. Caverns. Power-plant construction.
Apart from the above infrastructural measures, PORR has realised projects in all the
other fields of underground work for many decades.
On hydropower projects, for example, PORR has improved and greatly mechanised
the conventional tunnelling techniques – using various cross sections – which derive
from the traditional mining methods.
Limberg II pumped storage power Uetliberg water supply tunnel,
plant, Salzburg Switzerland
CERN LHC Project, Switzerland
10

Limberg II pumped storage power
plant, Salzburg
Limberg II pumped storage power
plant, Salzburg
Limberg II pumped storage power
plant, Salzburg
All hazards, such as water inrush, severly squeezing ground or gas occurrences,
must be handled with the utmost priority being given to the safety of the structure,
the equipment and above all to that of the people at the working face.
Our experienced specialists are our responsible representatives on site in the construction
and implementation of tunnels, shafts, caverns or in hydro power scheme
construction.
Limberg II pumped storage power plant, Salzburg
11

Wienerwald Tunnel, Vienna – Lower Austria
5 | Technologies
The extraordinary variety of rock conditions is a constant stimulus to our engineers’
and technicians’ efforts to develop innovative methods enabling us to offer the optimal
technical and economic solution for each particular underground project.
Lainzer Tunnel, LT 33, Vienna
12
Wienerwald Tunnel,
Vienna – Lower Austria
Citytunnel Waidhofen/Ybbs,
Lower Austria

A10 Tauern Tunnel, 2 nd tube, Salzburg A10 Tauern Tunnel, 2 nd tube, Salzburg A10 Tauern Tunnel, 2 nd tube, Salzburg
Conventional tunnelling techniques
• Full-face tunnelling
• Mechanical excavation using tunnel excavators or road headers
• Special driving methods with support provided ahead of the advancing face using
pipe roofing, grouting, groundwater lowering or ground freezing
Wienerwald Tunnel, Vienna – Lower Austria
13

Lötschberg base Tunnel, Switzerland
Mechanical tunnelling using tunnel boring machines
(TBM)
• Full-face tunnelling machines with diameters ranging from 3.2 to more than 13 m
• Tunnel driving by use of hard-rock tunnelling machines (gripper machines) followed
by cast-in-place secondary lining
• Tunnel driving using shield TbMs with simultaneous installation of a single-layer
segmental lining or a two-layer lining with segments and cast-in-place lining
• Slurry shield tunnelling: Tunnel driving with slurry-supported face, segmental lining
• Earth pressure balanced (EPb) shield tunnelling: Tunnel driving with face support,
segmental lining
• Tunnel driving using multi-mode shields: With various different operation modes
with or without face support, segmental lining
Wienerwald Tunnel,
Vienna – Lower Austria Lötschberg base Tunnel, Switzerland
14

Steinsporn II district heating line,
Vienna Rail tunnel H3-4, H3-4 Tyrol
Gas pipeline, Vienna
Mechanical tunnelling using the pipe jacking
method
• Excavation by full-face cutter head or road header
Jacking pipes for ground support and shield thrust are normally made of reinforced
concrete. Applied primarily in trenchless conduit construction for pipe diameters of
between 1.5 m and more than 3 m.
Rail tunnel H3-4, Tyrol
15

Porr Bau GmbH
Tunnelbau
Absberggasse 47, A-1100 Vienna
Phone: +43 (0) 50 626-0
Fax: +43 (0) 50 626-1111
520e/08.12/1M
www.porr-group.com | tunnelbau@porr.at
Ref.
© 2012 Allgemeine Baugesellschaft – A. Porr Aktiengesellschaft ABAP