| 摘要 |
PROBLEM TO BE SOLVED: To provide a mud discharger in a shield method capable of efficiently discharging drilled soil separated from gravel while destroying large blocks including clay blocks relatively easy to break, if contained in drilled soil. SOLUTION: A mud discharger in a shield method wherein drilled soil taken into a chamber in a shield mainbody is carried outside a pit together with a muddy water fed to a cutter head includes a gravel separator 1 connected to a discharge port for drilled soil in the chamber for destroying blocks including clay blocks relatively easy to destroy and separating large gravel from small sediment, a mud discharge tank 3 for storing small sediment separated by the gravel separator 1, a mud discharge pipe 5 for pipe-transporting discharged mud stored in the mud discharge tank 3 outside the pit and a gravel carry-out device for carrying large gravel separated by the gravel separator 1.
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