Micro-Tunnelling

Micro Tunneling is another technology introced for the first time for laying of Sewer network in Goa by this Corporation. Microtunneling installs pipe using a microtunnel boring machine (MTBM). The term “microtunneling” refers to the fact that person-entry is not required (in fact, it is usually not possible) during tunneling. The term “microtunneling” is frequently misunderstood and misused because it refers to the remote control aspect of the method (i.e., no person-entry needed), not the size of the tunnel. In fact, microtunnels can be quite large. MTBMs typically use pipe jacking to insert pipe just behind the cutting head (the jacked pipe continuously supports the tunneling operation), but in self-supporting strata (especially rock), pipe pullback is an alternative.