Salgesch / Sierre

Raspille renaturation measures

  • Client: Canton of Valais
  • Site management / reference person: Canton of Valais, Claudio Roth / Michel Fontannaz / SRP Brig, Sascha Dany
  • Site manager: Jasin Ajeti
  • Foreman: Sebastian Schwery
  • Construction period: Low water period 2020/2021
  • Construction costs: CHF 1.5 million

Technical data:

  • 42,000 m3 excavation
  • 12,500 m3 Soil removal / recultivation
  • 5'000 m3 Demolition of block shoring
  • 15'000 m3 Preparation of excavated material
  • 19'000 m3 Dam construction
  • 4'000 m3 Backfilling
  • 17'000 to. Construction of block shoring

Project description:

The "Raspille confluence" project provides for the reactivation of the old arm of the Rhone. For this purpose, the existing flood protection dam is to be moved back. The Raspille watercourse will be revitalized by means of a meander within water protection zone S3. In order to restore longitudinal connectivity and fish passability, the sill at the mouth will be removed and the bed of the Raspille will be lowered to the new meander. This deepening lies within water protection zone S2. All removal and filling work was carried out using 3D excavators.

Requirements:

  • Hydraulic engineering
  • Short construction time
  • Water protection zone S2 / S3

Contact persons

Sebastian Schwery

Federal dipl. foreman

+41 79 197 20 39

sebastian.schwery@volken-group.ch

Jasin Ajeti

Technician HF / Construction Foreman SBA

+41 78 627 61 89

+41 27 948 05 48

jasin.ajeti@volken-group.ch