Microtunnelling

WHEN ABSOLUTE PRECISION IS REQUIRED, CUTTING EDGE MICROTUNNELLING MACHINES PROVIDE EXPERT RESULTS

IPC (Bothar Group of Companies) provides expert microtunneling solutions, using microtunnelling machines manufactured by world leader Herrenknecht, as well as Bothar Built FSD Microtunnelling machines.

Microtunneling is a trenchless construction method used to install pipelines beneath highways, railroads, runways, harbors, rivers, and environmentally sensitive areas. Microtunneling uses a remotely-controlled, guided operation that provides continuous support to the excavation face by applying mechanical or fluid pressure to balance groundwater and earth pressures.

Our machines include a comprehensive range of AVN systems with different cutting heads for tunnelling in soft ground, mixed ground or hard rock. In soft soils and mixed geologies, standard or mixed ground cutterheads are used, while a rock cutterhead with disc cutters is used for tunnelling in stable rock formations.

MICROTUNNELLING METHOD

Microtunneling requires jacking and reception shafts at the opposite ends of each drive.  A microtunnel boring machine (MTBM) is pushed into the earth by hydraulic jacks mounted and aligned in the jacking shaft. The jacks are then retracted and the slurry lines and control cables are disconnected.

A product pipe or casing is lowered into the shaft and inserted between the jacking frame and the MTBM or previously jacked pipe. Slurry lines and power and control cable connections are made, and the pipe and MTBM are advanced another drive stroke.

This process is repeated until the MTBM reaches the reception shaft. Upon drive completion, the MTBM and trailing equipment are retrieved and all equipment removed from the pipeline.

ADVANTAGES

  • Microtunnelling is one of the most precise drilling methods, with machines operated using state-of-the-art laser-guided technology.
  • The slurry-supported excavation concept makes it possible to use these machines in all kinds of ground conditions, ranging from silt to clay to incohesive soils, and further to gravel and rock.
  • With a small footprint compared to traditional open cut construction, microtunneling allows for a more direct route and is much less destructive to the surrounding site.
  • Microtunnelling provides a cleaner process with less environmental impact than other traditional drilling methods.

EQUIPMENT CAPABILITIES

IPC (Bothar Group of Companies) has microtunnelling machines ideal for tunnelling in the diameter range of 0.4 to 4 meters

DO YOU HAVE A DRILLING PROJECT AND YOU NEED EXPERTS TO PLAN AND/OR EXECUTE THE SUCCESSFUL COMPLETION OF IT?

Contact us today