Pipe jacking is a technique used to install an underground pipeline through a bore created by a shield type drivage machine, which is used hydraulically from a starting pit. This technology was developed in the United States over 50 years ago. Since that time, the advantages of this method have been recognized by the entire world. The pipe jacking technology has been used in various applications such as oil and gas pipelines, electricity and telecommunications cable installation. Recent technological developments have led to successful methods of stabilizing unstable strata by excluding water from the excavations by means of the mud slurry around the pipes. During the pushing processes, the mud slurry is injected into the face and into the over-cutting area, which is between the concrete pipe and the soil. After, the slurry fills the soil voids; the soil stabilizes due to the slurry pressure. After the drivage and pushing processes are finished, the mortar injection into the over-cutting area is carried out in order to maintain permanent stability of the surrounding soil and the over-cutting area. Figure 1 shows a scheme of slurry pipe jacking method. The effects of the above project in overcrowded urban areas are significant and often result in substantial traffic delays associated with a loss of travel time. Clearly the solution to these utility placement problems, if the full impact of trench excavation is to be avoided, is trenchless technology