Newsletter October 2007

With the new webdesign, which we share with the Group BRUGG, visitors of our homepage are going to benefit from a faster access to desired information on the company and our products. All Geobrugg protection systems are discussed in short texts, enhanced by informative illustrations and reference installations. In addition the possibility to obtain different types of technical documentations is offered. On the starting page the yearly report of the Group BRUGG 2006 is available for download as well.

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At Kehlstein, Germany a RXI-200 rock channel barrier successfully stopped a 6 m³ jointed boulder triggered 60 meters above the installation. The inspection of the activated brake rings in the support ropes revealed a high residual safety even after this rockfall impact of 1900 kJ.

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The long-time performance of Geobrugg debris flow barriers as a substitute for concrete check dams is investigated in Merdenson VS / Switzerland inside the framework of a research project. Three staged barriers shall be filled by natural events and then left without cleaning. The filled barriers form steps in the torrent and protect against unwanted erosion of the torrent bed and flanks. The uppermost barrier serves as erosion protection for the foundation of the 10 m high concrete dam. As a result of two debris flow events approximately approx. 750 m³ debris material were retained by the barriers.

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The slope stabilization along a 3 km long and 16 m deep Flax Bourton railway cutting enters into the next phase: With the stabilization of the 5th phase the TECCO^® slope stabilization system has been installed over 35’000 m2. The use of TECCO^® started in phase 3 and 4 for which a TECCO^® stabilization solution was presented, which adapts very well to this railway line cutting. Aesthetically the TECCO^® solution is preferable, maintaining a naturally greened slope appearance. .

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The new high-energy barrier system RXI-500 is made for very difficult situations: It can be used in places where large blocks are expected to break off and where large fall heights and bounce widths are inevitable. Because the energy absorption capacity of RXI-500 barriers is higher than many existing or planned concrete galleries, the system can either supplement intended construction methods or even replace them entirely. In addition, it is suitable as an alternative in cases when, for topographic or aesthetic reasons, it is not possible to build a berm.

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Since the certification test, carried out in accordance with the Swiss guidelines in October 2006, a total of 6 clients decided to install RXI-500 barrier systems. Two of the barriers are in Italy and one of each in Germany, Switzerland, Spain and Australia.