Project PDF (long)

Ochrona przed obrywami skalnymi
TRBOVLJE ROCKSLIDE
PROTECTION, SI
TRBOVLJE ROCKSLIDE PROTECTION
Ochrona przed obrywami skalnymi
Projekt
miejsce
kraj/region
Trbovlje rockslide protection
Trbovlje
Słowenia
Rok instalacji
2016
klient
Projektowanie
Wykonawca
Slovenian Infrastructure Agency (DRSI)
EHO Projekt
Kaskader
Situation
On 20th February 2016 over 500 cubic meters of rock and debris collapsed onto
the district road between the county seat Trbovlje and Ljubljana. Not only was
the important road blocked, the residents were also cut off from electricity and
water.
The debris removal on route R1-223 had to be completed in the shortest
possible time, but first sustainable protection measures needed to be developed
and installed. Site investigations and software analysis conducted by geologists
and engineers indicate a significant hazard potential. The heavily fractured
residual rock mass at the mountain top cannot be taken down as it could
damage an important nearby railway. However, parallel to the site investigation
and software analysis, limited rock scaling was also being performed.
opis
Construction commenced on March 8th with rock drilling to install anchors and
base plates for the barrier’s post foundations. Based on the study results
national authorities decided to apply a Geobrugg rockfall protection system from
the RXE-Series. With its ring nets made of high-tensile steel wire the barrier
design has been tested and approved to absorb impact energies of up to 8,000
[kJ]. Additionally, two GBE-500A systems were selected to protect the lower part
of the slope.
The posts, ringnet’s ropes and accessories produced and pre-assembled in
Romanshorn, Switzerland, were already delivered to Trbovlje by mid-March. The
biggest helicopter of the Slovenian Armed Forces delivered the four
preassembled ring net bundles along with the five posts, weighing almost 2
metric tons, to the heavily inaccessible terrain. Despite high winds the helicopter
crew made the decision: “We’re flying!” The experience of the entire ground and
helicopter crew was needed to connect the posts to the base plates within a
millimeter of accuracy. The mega-barrier technical acceptance inspection took
place on April 4th, the same day officials, stakeholders and the public are
welcomed to the inaugural reopening of the newly repaired and secured road.
Chroniony Objekt
Systemy
Road
GBE-500A, RXE-8000
Ochrona przeciwerozyjna
Galvanized, GEOBRUGG SUPERCOATING ®
Ochrona przed obrywami skalnymi | Trbovlje rockslide protection, SI
2/9
Klasa energetyczna
500 kJ, 8000 kJ
wysokość systemu
długość systemu
3.0 m, 8.0 m
- 40 m
Ochrona przed obrywami skalnymi | Trbovlje rockslide protection, SI
3/9
Overview of the situation after the event.
Overview of the situation after the event.
Slope preparation for the installation works. Cleaning of
the surface.
Ochrona przed obrywami skalnymi | Trbovlje rockslide protection, SI
4/9
Example of conditions on the installation site, where
helicopter transport was involved.
Example of conditions on the installation site, where
helicopter transport was involved.
Border post positions - highest helicopter pilot accuracy
is clearly visible!
Ochrona przed obrywami skalnymi | Trbovlje rockslide protection, SI
5/9
Final posts adjustments, line of protection already visible.
Transmission ropes installation. Visible tremendous size
of the barrier and it's post profiles.
ROCCO® ring-net bundles prepared for "curtain"
installation.
Ochrona przed obrywami skalnymi | Trbovlje rockslide protection, SI
6/9
ROCCO® ring-net installation.
RXE-8000 barrier fully installed.
RXE-8000 barrier fully installed.
Ochrona przed obrywami skalnymi | Trbovlje rockslide protection, SI
7/9
RXE-8000 barrier fully installed. Perfect perspective
concerning protected area.
Additional line of protection: GBE-500A barrier.
RXE-8000 ready to protect. Size of the whole rock slide
damage also visible.
Ochrona przed obrywami skalnymi | Trbovlje rockslide protection, SI
8/9
Whole project overview - desctruction aread clearly
visible.
W razie pytań prosimy o kontakt ze specjalistą Geobrugga.
Eberhard Gröner
Project Manager North-West Germany, Regional Manager UK
Phone +41 71 466 81 57
Mobile +41 79 421 17 01
[email protected]
Geobrugg AG
Aachstrasse 11 | 8590 Romanshorn | Szwajcaria
[email protected] | www.geobrugg.com
Ein Unternehmen der Gruppe BRUGG | ISO 9001 zertifiziert
Ochrona przed obrywami skalnymi | Trbovlje rockslide protection, SI
9/9