Title:
IMPROVEMENT METHOD FOR WATER BOTTOM GROUND, OPERATION SHIP, AND INNER BUCKET PRESSURE CONTROLLING SYSTEM
Document Type and Number:
Japanese Patent JP2017190667
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To produce improved soil without taking sea bottom soil on a ship or the land, that is to produce improved soil in seawater even in a case where excavated soil from sea bottom ground contains polluted soil.SOLUTION: There is provided an improvement method for water bottom ground using an operation ship, which comprises a step of digging water bottom ground with a tip of a bucket arranged in an elevatable manner, and a step of taking excavated soil into the bucket under a state where water is disturbed from flowing into the bucket. In addition, the sea bottom soil is taken into after discharge of seawater in the bucket, and containing of excessive water is suppressed upon mixing with improvement material so as to stabilize quality of the improved soil produced. Furthermore, the stirring/mixing are carried out under a state where the bucket is sealed so as to further stabilize quality of the improved soil produced in the bucket. In addition, the improvement material is charged into the bucket via a bucket supply path independently from the state (solid/powder/liquid) of the improvement material.SELECTED DRAWING: Figure 21A
Inventors:
HONDA HIDEKI
YASHIKI TAHO
YAMAMOTO YOSHITOMO
MIYAMOTO KAZUYUKI
YASHIKI TAHO
YAMAMOTO YOSHITOMO
MIYAMOTO KAZUYUKI
Application Number:
JP2017075654A
Publication Date:
October 19, 2017
Filing Date:
April 06, 2017
Export Citation:
Assignee:
JFE STEEL CORP
NIPPON KAIKO KK
NIPPON KAIKO KK
International Classes:
E02D3/12; E02B3/00; E02F3/47; E02F7/00
Domestic Patent References:
| JP2014025315A | 2014-02-06 | |||
| JP2014094832A | 2014-05-22 | |||
| JP2012117334A | 2012-06-21 |
Foreign References:
| US5540005A | 1996-07-30 |
Attorney, Agent or Firm:
Tomita clause