AZ100 Total Guidance System
Developed by Akkerman to support long-distance and curved pipe jacking, the AZ100 TGS is a self-surveying azimuth-based total guidance system. The AZ100 TGS minimizes errors often encountered with other types of guidance systems due to laser deflection or MTBM drift. Using fixed reference prisms or “azimuths” strategically located on the launch shaft, a “shaft station” communicates with self-leveling total stations via prisms inside the tunnel. Positioned at a fixed distance from the MTBM to eliminate refraction from atmospherics, an MTBM “pipe station” projects a laser onto the MTBM target allowing the operator navigation control. During this operation, the series of total stations communicate at regular intervals while referencing their position to the azimuths each time. This ensures line and grade accuracy at extremely long distances or complex alignments.
FEATURES:
- An initial survey of tunnel start and endpoints is the only survey required, reducing downtime.
- Total stations can be spaced 1,000–3,500 ft apart depending on prism size, tunnel diameter, and atmospheric conditions.
- The AZ100 TGS logs over 100 data points for reporting alignment deviation, face pressure, and torque changes.
- Guidance system automatically self‑surveys during pipe installation; operator can request a survey check with one button.
- AZ100 TGS software is supported on Akkerman microtunneling control systems.
- Requires DTA programming, provided by Akkerman.
Testimonials
Super Excavators, Inc. has enjoyed a long partnership with Akkerman over the years. We originally bought a competitor’s microtunnel system and had nothing but problems with quality and service. Finally we called Akkerman and bought their SL36 microtunnel system. Since then we have never looked back. We have bought several other pieces of equipment from Akkerman. From GBM equipment to ABIS to several microtunnel cutting heads. They have been great working with our staff to customize the equipment for our specific needs. We have put their equipment to the test on several projects by pushing the envelope in long drive distances and very difficult ground conditions. The equipment has responded well and together we have made modifications to continue to improve on efficiency. In our business it is necessary to have people their when you need them. Akkerman has done a great job at supplying quality equipment and servicing our needs in a timely matter, helping keep our work on schedule.