Tunnel Boring Machine Spoil Removal Using Haul Unit Muck Cart and Tunnel Boring System Akkerman TBM

Описание: This video shows spoil removal process using an Akkerman 540 TBM on a Gleason Construction job site in Perrysburg, OH installing 54-in. RCP.

Tunnel Boring Machines (TBMs) and are used to install 48-96-in. OD jacking pipe. The system is interiorly controlled by an operator. The TBM’s hydraulic motors rotate the inner drum and the cutter head excavates while the soil is transported via conveyor and haul unit for disposal in the launch shaft. Alignment accuracy is achieved with a pipe laser in the launch shaft which projects a laser point on to the cutter face for the operator to monitor and make steering corrections as necessary. The all-in-one Tunnel Boring System easily adapts to any jacking pipe with an appropriately sized TBM, yoke and skid sections. A complete Tunnel Boring System comprises a TBM, pump unit, yoke, skid, haul unit, conveyor, pipe laser and often a bentonite and lubrication pump.

Excavated spoil from the TBM face enters the holes on the rotating cutter head, are forced onto dirt paddles behind the cutter head, and get deposited onto a belt or screw conveyor.

Conveyors transport the spoil from behind the cutter head to the back of the TBM or EBS where it falls into the haul unit dirt bucket. Once the dirt bucket is full, the haul unit operator drives the haul unit and spoil filled dirt bucket along the track to the launch shaft. The dirt bucket is hoisted out of the shaft, the spoil is dumped, and the bucket is returned to the haul unit which travels back to the back of the TBM or EBS for refilling.

The haul unit system contains the haul unit, dirt bucket and track. Multiple dirt bucket systems are used for increased productivity and efficiency on larger diameter and extended length projects. Haul units are electrically driven by an operator, powered by a battery pack and equipped with disc brakes.