| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a seawater exchange type revetment bank and a breakwater, by which the return of seawater from a seawater outflow opening to a retarding chamber is reduced and the circulation and quantity of the exchange of seawater from a seawater introducing port installed on the upper side to a revetment-bank sea-bottom section or a harbor inland-sea side can be increased largely. <P>SOLUTION: The revetment bank is constituted so that the retarding chamber 2, into and from which seawater can go, is mounted in a bank body 1, the seawater introducing port 3 is formed on the upper section of the chamber 2 and a conduit 5 for the seawater exchange type revetment bank, in which the conduit 5, from which seawater is led out from the chamber 2, is formed on the lower section of the bank body 1, is formed in an orifice shape that the harbor B side is made smaller than the retarding chamber 2 side in the sectional area of the conduit 5. Accordingly, the quantity of seawater flowing out to the harbor B side through the conduit 5 is made largely larger than that flowing into the chamber 2 from the harbor B side, the quantity of a return. Since seawater flows in from the introducing port 3 for compensating for the difference of the quantities of the flowing-out-and-in and a circulating flow is formed, the quantity of a circulation can be increased largely. The quantity of seawater exchanged can be increased largely by the same conduit even in the breakwater. <P>COPYRIGHT: (C)2004,JPO</p> |
