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Monitoring - Valendas: Securing a large block 2022

3 200 meters of wire rope and a net hold the rock at risk of demolition, picture RhB

Monitoring - Valendas: Securing a large block 2022

Threatened rockfall gallery; picture Vetsch Klosters AG

Monitoring - Valendas: Securing a large block 2022

The marked area was unstable and had to be dynamited without damaging the railroad gallery below, picture Caprez Ingenieure

Monitoring - Valendas: Securing a large block 2022

Installation of the wire ropes, the railway line lies below, along the "young" river Rhine , picture via RhB

Monitoring - Valendas: Securing a large block 2022

Mesh and wire ropes are installed and hold the endangered boulder before blasting, picture via Martina Sättele

Monitoring - Valendas: Securing a large block 2022

Wire ropes leading to the meadow above the boulder, picture Vetsch Klosters

Monitoring - Valendas: Securing a large block 2022

Secured boulder from above, picture via Martina Sättele

Monitoring - Valendas: Securing a large block 2022

Technically and physically demanding work, here the installation of the GUARD monitoring device

Monitoring - Valendas: Securing a large block 2022

Geobrugg GUARDs monitored rock movements alongside other systems

 

Zastosowane systemy

 

Rok Instalacji / Montazu

2022

Sytuacja początkowa

The railroad line between Reichenau-Tamins and Ilanz runs through a unique landscape. Here, the Rhaetian Railway passes through the Rhine Gorge (Ruinaulta) over a length of about 15 kilometers. Galleries, dams and nets protect the railroad line from falling stones and boulders that break loose from the steep erosion slopes, which can be up to 120 meters high.

In the summer of 2022, a team member of the Surselva railroad service discovered huge stones on the gallery and the slope while inspecting the protective structures. A geologic evaluation revealed that a large boulder was in danger of falling and had to be removed as quickly as possible.

The Rhaetian Railway (RhB) reacted quickly: after the rope inspection by geologists, contractors and project engineers, measures were planned using a 3-D model to determine the volume, position, behavior and center of gravity of the boulder.

 

Opis zastosowanego rozwiazania

In a short time, the block weighing almost 500 tons was stabilized with 32 wire ropes (22 mm GEOBINEX). These ropes were firmly anchored on the grassland above with 350 meters of spiral rope anchors (22.5 mm). A heavy-duty net (SPIDER S4-130) measuring over 300 square meters additionally secured the boulder. These measures were designed to prevent the boulder from falling during the blasting operations. Furthermore, several Geobrugg GUARDS continuously monitored the rope loads.

The project was carried out in the shortest possible time and in the best possible cooperation with the client RhB and all those involved so that the safety of everyone involved was guaranteed at all times. Swiss television SRF reported in December 2022.

Involved partner companies of the Rhaetian Railway

Kraj / Region

Szwajcaria

Chroniony Objekt

Railway

Osoba kontaktowa na miejscu

Kevin Coyle
 

Kevin Coyle

Regional Manager Northeast

Zagrożeniami naturalnymi
Nżynieria hydrauliczna
Geobrugg North America, LLC,3 Beaudet Terr,CT 06237 Columbia / USA Regional Manager Northeast

Formularz kontaktowy

Saleh Feidi
 

Saleh Feidi

Zagrożeniami naturalnymi
Nżynieria hydrauliczna
Geobrugg North America, LLC,8921 Emperor Ave.,91775 San Gabriel, California / USA

Formularz kontaktowy

John Kalejta
 

John Kalejta

Zagrożeniami naturalnymi
Nżynieria hydrauliczna
Geobrugg North America, LLC,KS 67226 Wichita / USA

Formularz kontaktowy

Bob Lyne
 

Bob Lyne

Zagrożeniami naturalnymi
Nżynieria hydrauliczna
Geobrugg North America, LLC,8004 Windspray Drive,NC 27358 Summerfield / USA

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Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

Zagrożeniami naturalnymi
Geobrugg North America, LLC,22 Centro Algodones , Civil Engineer General Manager Geobrugg North America

Formularz kontaktowy

Tim Shevlin
 

Tim Shevlin

Zagrożeniami naturalnymi
Geobrugg North America, LLC,OR 97302 Salem / USA

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