RESCU PROGRAM: Gravity Pipeline Project

Contractor partner Barnard-Bessac Joint Venture (BBJV) oversaw the progress of Salus, the tunnel boring machine (TBM), as it began continuous mining from the launch shaft towards the SVCW plant. This mining took place after a planned stoppage where BBJV disassembled the launch cradle and made modifications to the launch shaft, such as installing a drive unit and continuous muck conveyor system. This system hauls the muck from the face of Salus’ cutting tool and out of the launch shaft. The last thing BBJV installed in preparation for continuous mining was the California Switch (seen below), which allows supply rail cars to pass each other in the tunnel to promote efficient movement of supply materials in and out of the tunnel.

 

Safety is emphasized at all stages of the continuous mining process. BBJV conducts daily tunnel taskforce meetings and works closely with SVCW to monitor ground settlement.

 

BBJV staff visit stations in the tunnel and on the TBM to monitor the safety equipment, review safety equipment operations, and practice mine safety rescues on a regular basis.

 

As of October 19, Salus mined 1,787 feet from the launch shaft and built 351 rings.