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Title:
SYSTEM FOR TRANSPORTING DREDGED EARTH AND SAND
Document Type and Number:
WIPO Patent Application WO/2006/137193
Kind Code:
A1
Abstract:
A system for transporting dredged earth and sand in which a transportation line (L) comprises a siphon pipe (S) for sucking dredged earth and sand together with water in a large capacity reservoir (D) through the siphon action, and a natural down-flow line (P) for causing the fluid containing the dredged earth and sand and water sucked by the siphon pipe (S) to flow down by the gravity to a sea or a river in the vicinity thereof. The natural down-flow line (P) comprises a plurality of pipe lines (Pp), a relay pit (Pm) interposed between adjacent pipe lines (Pp), and a water/earth and sand separating means (SE) provided continuously with the downstream end of the most downstream pipeline and capable of separating the water from the fluid flowing down through the pipeline and discharging the water to the sea or the river in the vicinity thereof and capable of temporarily storing and recovering the residual earth and sand. The transportation line (L) is provided with a means (G) for converting hydraulic energy of the fluid flowing therethrough into electric energy. Thus, a large quantity of earth and sand deposited on the bottom of a large capacity reservoir such as a dam can be discharged efficiently to a sea or the like at relatively low energy and cost while avoiding influence on the natural environment.

Inventors:
KOJIMA AKIO (JP)
KOJIMA TOKUAKI (JP)
SATO SABURO (JP)
Application Number:
PCT/JP2006/303944
Publication Date:
December 28, 2006
Filing Date:
March 02, 2006
Export Citation:
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Assignee:
DAMDRE CORP (JP)
KOJIMA AKIO (JP)
KOJIMA TOKUAKI (JP)
SATO SABURO (JP)
International Classes:
E02F3/88; E02F3/90; E02F7/00; F03B13/00
Foreign References:
JPH08158397A1996-06-18
JPS5585796A1980-06-28
JPH0518347A1993-01-26
JP2003001282A2003-01-07
Attorney, Agent or Firm:
Ochiai, Takeshi (6-3 Taito 2-chom, Taito-ku Tokyo 16, JP)
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