Micro tunnelling which is a process that uses a remotely controlled Tunnelling Machine combined with the pipe jacking technique to directly install product pipelines underground in a single pass is a service we offer with a highly level of efficiency and professionalism.

Microtunneling is a competing alternative method to the open-cut method from different aspects including; economics and environmental conditions. As such, there is a need to increase its applications and accuracy Yoshida and Tsujimura 2002. Casing sizes of microtunneling usually range from 0.9 to 2.4 m in diameter, with the casing being made of steel, reinforced concrete, or fiberglass.

In recent years, pipe-jacking methods have been developed for microtunneling Brusey 1998. Pipe-jacking is a trenchless excavation technique for installing pipes where a hydraulic jacks push the pipe through the ground behind a microtunneling boring machine. The microtunnel boring machine MTBM excavates the soil while the pipe is being pushed. Pipe-jacking using mechanical excavation methods have several advantages:

i. Mechanization and high advance rate;

ii. Keeping exact tunnel profile;

iii. Construction is performed under existing utilities and obstructions; including small rivers, so, there is minimal surface disruption; and

iv. Least impact on the surface structures.

The pipe-jacking technique is classified into three methods, depending on type of excavation and removal of excavated soil, including; manual open face excavation, mechanical closed-face excavation, and mechanical excavation using slurry system.

Micro Tunneling construction is characterized by complexity, repetitive operations, complex construction environment, and different construction techniques. It offers an additional trenchless method to install pipelines in adverse conditions where Micro Tunneling is the most effective method of execution.