DISCHARGE METHOD AND DEVICE FOR EXCAVATED SOIL

摘要

PROBLEM TO BE SOLVED: To provide a discharge method and a device which sufficiently enhance the conveying efficiency of discharge mud by forming plugs. SOLUTION: The discharging device of excavated soil is provided with a mud-discharge pipe 14 whose one end is connected to a mud-discharge tank and the other end is connected to a receiver tank, a mud-discharge unit 26 connected to the receiver tank through an air suction pipe 24 to evacuate the mud-discharge pipe 14, a mud-discharge valve 16 equipped at one end side of the mud-discharge pipe 14, and an air introduction valve 20 disposed through an air introduction pipe 18 at the downstream side of the mud-discharge valve 16. The mud-discharge valve 16 and the air introduction valve 20 are alternately opened or closed to discharge the mud in a mud-discharge tank 12 as plug- shaped forms.