Schweitzer Pump House Wet Well & Intake Piping
- Location Minnesota
MethodsMicrotunneling, permalock pipe, wet retrieval and diving
Michels used microtunneling methods to install a 163-foot tunnel into a reservoir to provide a local mine with fresh water. A Microtunnel Boring Machine (MTBM) was launched from a 40-foot-deep shaft to mine the tunnel, which measured 74 inches in diameter. Retrieval of the MTMB was done in the reservoir via wet retrieval using divers and an overhead crane from shore.
Michels used its established pre-planning procedure to make sure that all necessary parts and equipment were readily available on-site to help the job run efficiently.