Rehabilitation Method by Mortal Injection Using Slurry Pipe-jacking

摘要

sRecently, small-diameter shallow tunnels have been often built by using pipe-jacking. This is the sewage tunnel drivage method. This system involves the pushing or thrusting of a drivage machine through concrete pipes ahead of jacks. This method utilizes mud slurry that is formed around the pipes in order to stabilize the surrounding soil. However, the behaviors of the soil and the mud slurry around the pipes, and the mortal injection around the pipes as the rehabilitation method are not clearly understood. From this point of view, this paper discusses the performance of mud slurry around drivage pipes and the mortal around the pipes by means of two-dimensional Eulerian-Lagragian seepage analysis.