Abstract: Disclosed is a continuous tunneling and lining machine. The machine is capable of simultaneously boring and lining a tunnel through a solid medium. The machine comprises four major components including: (1) an excavation system; (2) a debris removal system; (3) a lining system; and (4) a liner material retrieval system. The excavation system comprises a rotary excavator that excavates the tunnel bore. The lining system mixes liner materials at the bulkhead and pumps the mixed material into slipform. The slipform comprises an inner form, an outer form and a wall connecting the inner and outer form and at least one mandrel. The mandrels form cast in place passageways to accommodate liner component retrieval and excavation debris removal. The debris removal system pumps excavation debris through the excavated area into the mandrels and out the cast in place passageways.

Abstract: Disclosed is a continuous tunneling and lining machine. The machine is capable of simultaneously boring and lining a tunnel through a solid medium. The machine comprises four major components including: (1) an excavation system; (2) a debris removal system; (3) a lining system; and (4) a liner material retrieval system. The excavation system comprises a rotary excavator that excavates the tunnel bore. The lining system mixes liner materials at the bulkhead and pumps the mixed material into slipform. The slipform comprises an inner form, an outer form and a wall connecting the inner and outer form and at least one mandrel. The mandrels form cast in place passageways to accommodate liner component retrieval and excavation debris removal. The debris removal system pumps excavation debris through the excavated area into the mandrels and out the cast in place passageways.