Lenk, Bernese Alps 2017 - Geobrugg Lenk, Bernese Alps 2017 - Geobrugg
Lenk, Bernese Alps 2017 - Geobrugg Lenk, Bernese Alps 2017 - Geobrugg
Lenk, Bernese Alps 2017 - Geobrugg Lenk, Bernese Alps 2017 - Geobrugg
Lenk, Bernese Alps 2017 - Geobrugg Lenk, Bernese Alps 2017 - Geobrugg
Lenk, Bernese Alps 2017 - Geobrugg Lenk, Bernese Alps 2017 - Geobrugg
Lenk, Bernese Alps 2017 - Geobrugg Lenk, Bernese Alps 2017 - Geobrugg
Lenk, Bernese Alps 2017 - Geobrugg Lenk, Bernese Alps 2017 - Geobrugg
Lenk, Bernese Alps 2017 - Geobrugg Lenk, Bernese Alps 2017 - Geobrugg
Lenk, Bernese Alps 2017 - Geobrugg Lenk, Bernese Alps 2017 - Geobrugg
Lenk, Bernese Alps 2017 - Geobrugg Lenk, Bernese Alps 2017 - Geobrugg
Lenk, Bernese Alps 2017 - Geobrugg Lenk, Bernese Alps 2017 - Geobrugg
Lenk, Bernese Alps 2017 - Geobrugg Lenk, Bernese Alps 2017 - Geobrugg

Lenk, Bernese Alps

   Paylaş
Posta Kodu
3775
Yer
Lenk Seiten
Ülke / Bölge
İsviçre
Kurulum Yılı
2017
Müşteri
Community of Lenk
Mühendislik
Emch+Berger AG Bern
Yüklenici
Steiger Ingenieure + Planer AG
Alt yüklenici
Burn & Künzi AG
Gösterilen obje
Road, Railway, Building, Touristic infrastructure, Residential area, Infrastructure, Other
Sistemler
Özel çözümler
Sistem boyu
5.0 m, 7.0 m, 10.0 m, 12.0 m
Sistem uzunluğu
40 m - 40 m
Korozyon koruması
GEOBRUGG SUPERCOATING®
Bariyer sayısı
1
Tutma kapasitesi
40000 m³
Durum

The village of Lenk in Simmental valley (Bernese Oberland) was already affected by debris flows in the past. For example, mudflows in summer 1930 from side streams clogged the bed of the river Simme what caused a deluge in the village. Access to this mountain village - street and rail - was also blocked. During this large event, the quantity of debris flow was estimated as 135'000 m³.

Many other minor to medium events were observed in the following decades. After a flood in 2005 (with minor damage), the danger map was revised and the present project was launched.

The origin of the debris flow mobilization area is mainly a slump in the Bühlgraben as well as the strong gut erosion of the alluvial soils below it. The catchment area covers an area of ​​around 20 km². It is assumed that the debris flows occur in several discharges. The location of the barrier is at the end of a winding stream.

Based on a 3D debris modeling (RAMMS DEBRIS FLOW, carried out by Emch + Berger AG from Bern), the input parameters for the dimensioning flexible barriers were obtained. The final solution is dimensioned with a retaining capacity of 70'000 m³ (in four to five bays of 15'000 m³ each) and flow velocities up to 9 m/s.

Açıklama

To prevent medium size debris flows reach the riverbed of the Simme, a restraint system for sludge and driftwood was created in geologically very demanding terrain. The annual normal water discharge with smaller solid particles can easily pass through the basal opening.

Due to the required spans and the specified loads, a design with concrete slabs was chosen. For this purpose, Geobrugg dimensioned the nets and ropes between the concrete slabs (based on the Geobrugg standard barrier VX160-H6). The design of the concrete slabs was developed by Emch + Berger AG Bern.

The six foundations of the concrete slabs were securely deeply seated using 15 m deep reinforced pails.

Nevertheless, in the case of a major event, this retention volume could be exceeded. Then the remaining debris material passes via the overflow section in the middle of the barrier.

Yerel yetkiliniz

Kevin H. Coyle
Kevin H. Coyle
Regional Manager Northeast
Natural Hazards
Geobrugg North America, LLC
3 Beaudet Terr
Columbia CT 06237 / USA
Telefon +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
Telefon +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
Telefon +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
Telefon +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
Telefon +1 505 771 4080
Mobil +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
Telefon +1 503 423 7258

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