MUDDY FEEDING METHOD AND MUDDY FEEDING SYSTEM DEVICE FOR NEGATIVE PRESSURE MUD SUCKING TYPE HIGH DENSITY DREDGER

摘要

PROBLEM TO BE SOLVED: To apply a negative pressure mud sucking type high density dredger also for the dredging of gravel layer and, in addition, force-feed the dredged soil and sand of gravel layer efficiency at high density using a relatively simple structure. ;SOLUTION: Dredged soil and sand B sucked on board by a mud sucking device is screened to large diameter foreign matter B1 (for example, refuse and medium gravel of 30 mm or more) and small diameter small gravel B2 (for example, small gravel and mud balls of 3 to 30 mm) by a two-stage net vibrating sieve 4. Then the small diameter small gravel B2 is inserted forcibly into a mud feed main pipe 9 by a concrete pump 10 on the downstream side of a mud feed pump 8 so as to force-feed it together with soft mud B3 (soft mud and small gravel of 3 mm or less) fed by a mud feed pump 8 to a soil damping station.;COPYRIGHT: (C)1999,JPO