Rohrvortrieb Stollenbau SONNTAG Baugesellschaft

Pipe jacking

Gallery construction

Where pipe jacking is not possible because of obstacles or existing ducts being crossed, or space is simply too confined, galleries are the answer.

Gallery construction is a mining tunnelling method involving wooden, steel, or shotcrete lagging. A typical feature of gallery construction is the advance securing shell, which remains in the ground. The steel gallery method, using sheet steel securing (mini-sheet piling), can be applied to nearly any soil, dimensions, and length.

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