Камнепады Нестабильность склонов Решения для горнодобывающих предприятий Сели
Камнепады Нестабильность склонов Решения для горнодобывающих предприятий Сели
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Newsletter July 2011


 

        Newsletter 2/2011  
 
   
  Overview

             
  1:1 field tests were run to test the function of the first rockfall barriers back in 1962  
1:1 field tests were run to test the function of the first rockfall barriers back in 1962

The process step, which uses systematic field tests to demonstrate how the laws of nature impact on the function of rockfall barriers, for example, was first used in 1962 and has been standard procedure ever since. In the early days, back in 1962, the barriers absorbed only 23 kJ, in 2001 as much as 3,000 kJ (9.6 metric tons) and 5,000 kJ (16 metric tons) in 2006. The field tests were gradually expanded to cover events such as debris flows, shallow landslides, snowslides or seismic disturbances in an underground mine. The test results obtained are verified by independent institutions in accordance with the strictest type tests and are carefully checked before being officially published.

Read more on this topic in our special anniversary brochure

 

   
             
  Increased risk of rockfall on the stretch of rail line running through the Moutier Gorge (Switzerland) and operated by the Schweizerische Bundesbahnen (SBB)  
Increased risk of rockfall on the stretch of rail line running through the Moutier Gorge (Switzerland) and operated by the Schweizerische Bundesbahnen (SBB)

Working on behalf of the SBB, GEOTEST classified four kilometers of the seven-kilometer-long Moutier Gorge as being at risk from rockfalls. As a protective measure, 1,860 meters of rockfall barriers were installed in sections measuring between five and 70 meters. Because rail traffic could not be interrupted, some work had to be done at night.

Read more about this project in our technical documentation "Rockfall barriers along the railroad line Moutier - Courrendlin"

 

   
           
  The Karl May Festival in Bad Segeberg (Germany) attracts 300,000 visitors each year  
The Karl May Festival in Bad Segeberg (Germany) attracts 300,000 visitors each year

In late 2010, the annual requirement to clear the rockface to protect against rockfall during the festival became a thing of the past. In the natural amphitheater in Bad Segeberg, host of the famous Karl May Festival as well as northern Germany's annual night of Schlager music, the gypsum and anhydrite rockface, which slopes at over 70 degrees, was permanently secured with a total of 2,000 m2 of SPIDER® spiral rope nets.

Read more about this project in our technical documentation "SPIDER® - Kalkbergstadion Bad Segeberg / Germany"

 

   
 

 

       
  Alongside the Panama Canal, a TECCO® slope stabilization system has replaced a crumbling shotcrete covering at a danger point  

Alongside the Panama Canal, a TECCO® slope stabilization system has replaced a crumbling shotcrete covering at a danger point

What a shotcrete covering could not achieve - i.e. stopping a block of basalt from undergoing further fracturing and the formation of cracks - was ensured thanks to the flexible TECCO® mesh and 13-meter-long anchors with a nail grid of 2.75 x 2.75 m and partial pretensioning of between 30 and 50 kN. Once the natural vegetation returned to the site, the stabilization measure will become more or less invisible.
 
Read more about this project in our photographic documentation "TECCO® - slope stabilization system in the Panama Canal, Gaillard Cut, Purple Rock sector / Panama"

 

   
 

 

       
  Erosion at the base of a bridge pillar near Topoloveni (Romania) was halted with no need to divert the river  

Erosion at the base of a bridge pillar near Topoloveni (Romania) was halted with no need to divert the river

Installing the protective measure originally planned - a concrete structure - would have meant diverting the river, which would have been time-consuming and expensive. Two flexible debris flow barriers were installed in the riverbed in just 30 days, with no need to divert the river. Filled with rock, the debris flow barriers successfully halted the erosion process and stabilized the bridge pillar.

Read more about this project in our photographic documentation "Bridge pile debris flow protection Arges River, Topoloveni / Romania"

 

 

   
     
 

Your questions, comments and suggestions are very welcome and contribute to making our dialogue with you as useful as possible. Your contact: urs.brechbuehl@geobrugg.com

Best regards from Romanshorn

Geobrugg AG
Protection systems
CH-8590 Romanshorn
Tel. +41 71 466 81 55
Fax +41 71 466 81 50
www.geobrugg.com

 
 


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Geobrugg AG
Aachstrasse 11
CH-8590 Romanshorn / Швейцария
Телефон +41 71 466 81 55
Факс +41 71 466 81 50
e-mail: info@geobrugg.com


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