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A company of the BRUGG Group
United States
Galerie Maachi - BLS 2017 - Geobrugg Galerie Maachi - BLS 2017 - Geobrugg
Galerie Maachi - BLS 2017 - Geobrugg Galerie Maachi - BLS 2017 - Geobrugg
Galerie Maachi - BLS 2017 - Geobrugg Galerie Maachi - BLS 2017 - Geobrugg
Galerie Maachi - BLS 2017 - Geobrugg Galerie Maachi - BLS 2017 - Geobrugg
Galerie Maachi - BLS 2017 - Geobrugg Galerie Maachi - BLS 2017 - Geobrugg
Galerie Maachi - BLS 2017 - Geobrugg Galerie Maachi - BLS 2017 - Geobrugg
Galerie Maachi - BLS 2017 - Geobrugg Galerie Maachi - BLS 2017 - Geobrugg
Galerie Maachi - BLS 2017 - Geobrugg Galerie Maachi - BLS 2017 - Geobrugg
Galerie Maachi - BLS 2017 - Geobrugg Galerie Maachi - BLS 2017 - Geobrugg

Galerie Maachi - BLS

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Place
Ausserberg VS
Country/Region
Switzerland
Year of installation
2017
Customer
BLS AG
Engineering
Alp Bauingenieure AG
Contractor
SILEX Felstechnik AG
Other participating companies
Geoplan AG
Protected object
Railway
Systems
UX160-H4
System height
4.0 m
System length
15 m - 15 m
Corrosion protection
GEOBRUGG SUPERCOATING®
Number of barriers
1
Retention capacity
600 m³
Initial situation

After the flooding in July and August 2015 of the Maachi (a mountain torrent in the Canton of Valais under the mountain Wiwannihorn in the municipalities of Ausserberg and Raron), considerable damage from erosion occurred on the valley side of the avalanche gallery of the BLS Southern Ramp (Bern-Lötschberg-Simplon railway line).

Until now, the mountain torrent Maachi had been lead through pipes under the gallery and through the erosion slope. However, the existing inlet already clogged up even with a small amount of debris. Alternatives were therefore sought.

Description

The office of Geoplan AG, Steg, VS was commissioned by the BLS AG to draw up immediate measures for securing the erosion slope and also the gallery.

The best option provides for the following:

During normal water level, the Maachi torrent will continue to flow down the existing inlet shaft of the Maachi pipe system. As a result, the erosion slope is not affected.

In case of flooding with debris or debris flow, the water will in future be intentionally fed over the gallery. This generates a sort of waterfall with a greater drop onto the erosion slope. This creates regressive erosion problems.

  • On the mountain-side of the crater (water-filled hollow), the slope is secured by a nailed-up supporting wall.
  • On the valley side of the waterfall impact, a debris flow net is installed and pre-filled.

The nailed-up supporting wall and the UX160-H4 debris flow system stops the regressive erosion. The solution is at the same time inexpensive.

Your local contact

Kevin H. Coyle
Kevin H. Coyle
Regional Manager Northeast
Natural Hazards
Geobrugg North America, LLC
3 Beaudet Terr
Columbia CT 06237 / USA
Phone +1 860 377 3230

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Saleh Feidi
Saleh Feidi
Regional Manager California
Natural Hazards
Geobrugg North America, LLC
8921 Emperor Ave.
San Gabriel, California 91775 / USA
Phone +1 909 706 8964

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John Kalejta
John Kalejta
Regional Manager Central US
Natural Hazards
Geobrugg North America, LLC
3215 67th Avenue Pl
Greeley CO 80634 / USA
Phone +1 505 220 1404

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Bob Lyne
Bob Lyne
Regional Manager Southeast
Natural Hazards
Geobrugg North America, LLC
8004 Windspray Drive
Summerfield NC 27358 / USA
Phone +1 336 337 0945

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Pierce Runnels, Civil Engineer
Pierce Runnels, Civil Engineer
General Manager Geobrugg North America
Natural Hazards
Geobrugg North America, LLC
22 Centro Algodones
Phone +1 505 771 4080
Mobile +1 505 400 0796

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Tim Shevlin
Tim Shevlin
Sales Director
Natural Hazards
Geobrugg North America, LLC
4676 Commercial St. SE, PMB 174
Salem OR 97302 / USA
Phone +1 503 423 7258

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