... movement and reduce frictional resistance between the pipes and the tunnel wall (Shimada et al., 2003). The latter function is very important for long/curved pipeline installation. The size of the annulus plays an important role in creating excessive ground settlement. A proper sized annulus must be used...

... & Gas Artificial Intelligence Shimada Reservoir Characterization asian rock mechanics symposium arms8 sasaoka directionality wahyudi Matsui directional character metals & mining simangunsong attenuation rate bedding plane PPV prediction model correlation coefficient ground vibration...

... or thrusting of the drivagc machine through concrete pipes ahead of the jacks. The method utilizes the mud slurry which is formed around the pipes for stability of the surrounding soil I sedimentary rock (Shimada and Matsui 1997). The difference of the thrust between linear jacking and Curved jacking is due...