Partial Face Excavation TBM

The cutting drum controlled by the operator is used for soft rock while a bucket is used to excavate the face in case of clay or compact sand. In most of the TBMs the material from the excavation chamber is transported onto the belt conveyor by the same auger conveyor as in the earth pressure balance machine.

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Compressed air paricial face excavation TBM for unconsolidated ground conditions.

Loading one of tunnel boring machines to a ship. The machine was used to drill utility lines under airport surface infrastructure.