Product Overview
If the geology of your tunnel ranges from soft soils to weathered rock, then a Robbins Earth Pressure Balance Machine (EPBM) is the correct technical solution for your project. This is particularly true when your project is located in an urban environment and ground surface subsidence cannot be tolerated. Earth Pressure Balance Machine are utilized in the construction of rail tunnels, metropolitan subway systems, highway tunnels, and other projects where the tunnel will be constructed either partly or completely in soft soil beneath the water table. Unique Features of our Earth Pressure Balance Machine :- * A cutterhead and cutting tools specifically engineered to cope with the expected geology. The cutterhead may be designed with: o Robbins back-loading disc cutters and drag picks where soil with boulders or massive rock is expected. o Drag picks only where no rock is expected o Full coverage with drag picks and partial coverage with disc cutters where occasional boulders are expected. o A copy cutter to overcut the tunnel for steering * A durable cutterhead with the largest opening capacity in the industry, driven by a proven VFD system. * Reduces cutterhead friction. * A high capacity main bearing for reliability and longevity. * High-pressure seals on the cutterhead drive, articulation joint and tail shield to prevent water inflow * High-speed rotary segment erector mounted in the tail shield for perfect alignment with the segments.
If the geology of your tunnel ranges from soft soils to weathered rock, then a Robbins Earth Pressure Balance Machine (EPBM) is the correct technical solution for your project. This is particularly true when your project is located in an urban environment and ground surface subsidence cannot be tolerated. Earth Pressure Balance Machine are utilized in the construction of rail tunnels, metropolitan subway systems, highway tunnels, and other projects where the tunnel will be constructed either partly or completely in soft soil beneath the water table. Unique Features of our Earth Pressure Balance Machine :- * A cutterhead and cutting tools specifically engineered to cope with the expected geology. The cutterhead may be designed with: o Robbins back-loading disc cutters and drag picks where soil with boulders or massive rock is expected. o Drag picks only where no rock is expected o Full coverage with drag picks and partial coverage with disc cutters where occasional boulders are expected. o A copy cutter to overcut the tunnel for steering * A durable cutterhead with the largest opening capacity in the industry, driven by a proven VFD system. * Reduces cutterhead friction. * A high capacity main bearing for reliability and longevity. * High-pressure seals on the cutterhead drive, articulation joint and tail shield to prevent water inflow * High-speed rotary segment erector mounted in the tail shield for perfect alignment with the segments.
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