Microtunneling at LAX

Inclinometer training

Project

The LAMP project at LAX in California is a multi-billion-dollar program for modernizing access to and from the airport. One part of the project involved installation of 9,700 feet of 48-inch diameter earthquake-resistant pipe within the City of LA street rights of way. Cut and cover was used for most of the construction, but microtunneling was required for a 325-foot section under a busy boulevard.

Monitoring Requirement

GEO-Instruments was contracted to provide drilling, borehole logging, instrumentation supply, installation, commissioning, and training for the client.

Implementation

GEO-Instruments installed and automated MPBX (borehole extensometers) and UMP (Utility Monitoring Points) to monitor possible settlements from the microtunneling. Inclinometers were installed to monitor lateral displacements. GEO-Instruments trained users how to manually survey the inclinometers with a traversing probe system (see photo).