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liner-plate technique
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liner-plate technique

tunneling
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liner-plates
liner-plates Soft-ground support by ribs and liner plates.

The liner-plate technique is a method used in modern soft-ground tunneling. It involves using steel liner-plate sections that are bolted together to form a complete circle, often reinforced with steel ribs. This method is economical for larger tunnels and is erected by hand. It has been successfully employed in projects like the Chicago subway, where a central core and drifts are used to support the wall plates and arch ribs. A concrete lining is typically installed shortly after to strengthen the structure. While more economical than shield tunnels, the liner-plate technique carries a slightly higher risk of ground loss, necessitating careful workmanship and thorough soil-mechanics investigation.1

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4 Britannica Sources
  1. tunnels and underground excavations - Hand-mined tunnels
  2. tunnels and underground excavations - Pipe jacking
  3. tunnels and underground excavations - Concrete lining
  4. tunnels and underground excavations - Shield tunnels

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