Tunnel Liner Plate is available in three curved lengths allowing configuration of a variety of shapes and sizes, from 1.3m to 8m in diameter. Its two-flange design has twice the effective stiffness of a four-flange plate system in the same gauge (thickness).
Tunnel Liner Plate is available in three curved lengths allowing configuration of a variety of shapes and sizes, from 1.3m to 8m in diameter. Its two-flange design has twice the effective stiffness of a four-flange plate system in the same gauge (thickness). Individual plates weigh between 15 and 41 kg - light enough to carry by hand into a confined space. A variety of material options and coatings are available to optimize service life requirements
Assembly is simple using “speed bolts” (square-shouldered bolts and holes) at the flange connection. Plates can be assembled from inside the tunnel in continuous rings, advancing tunnels in 500mm long segments and grouted at regular intervals via factory-installed grout ports. As the tunnel progresses, the liner plate continually generates ring support, providing a safe launch area for workers and equipment to advance.
Highway Construction 
Mine Projection 
Municipal Engineering 
Irrigation Engineering 
Railway Construction Projection 
Other Application 
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