| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enable construction work efficiently and stably to the maximum extent from the beginning to the completion of the construction work when an artificial structure is formed on a bottom of water by dropping a large amount of deposit material to the bottom of the water. <P>SOLUTION: The amount of the deposit material 28 dropped from a ship bottom per unit time is controlled by each dropping action by properly using the arch friction (refer to the waffle pattern in Fig. 7) generated in the loaded deposit material 28 when the door of the hold 18 of the barge 14 is opened, of which the arch friction changes according to the dropping pattern made by combination of a loading form of the deposit material 28 in the hold 18 of the barge 14 and the time spent for the opening action of the door of the hold 18 of the barge 14 (a door opening pattern). By timely reviewing the dropping pattern by each dropping action, the amount of the deposit material 28 dropped from the ship bottom per unit time is adjusted properly. Acquisition of a needed deposit form by each dropping action leads construction work efficiently so that an ultimately needed deposit form on the bottom of the water can be obtained. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
