Microtunneling (MT) is a trenchless construction method for installing pipelines beneath the surface in a wide range of soil conditions without expensive dewatering systems. It uses a slurry to carry the spoils away from the tunnel heading to the main work shaft. Known for its safety benefits, operators do not have to enter the tunnel with this method. It is capable of installing pipes to accurate line and grade tolerances from the driveshaft to the reception shaft. The remote-controlled microtunneling boring machine (MTBM) is operated from a control panel, normally located on the surface. The system simultaneously installs pipe as spoil is excavated and removed
An especially advantageous method for conditions with pipeline alignment is deep, microtunneling uses many features during construction.
Benefits of Microtunneling:
Increased safety — personnel entry is not required
Allows for pipe jacking
Balances groundwater and earth pressures
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