| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of protecting long objects such as a cable and a pipe on a sea bed, which can protect the long objects such as the pipe and the cable on the sea bed over a long period of time. <P>SOLUTION: At a site where a submarine cable 20 is to be installed, the condition of the sea bed 200 and a tide near the sea bed 200 are investigated in advance to see how many filter units 50 are necessary and where they should be installed. Then, the submarine cable 20 is installed on the sea bed 200, and the filter units 50 are installed to cover the submarine cable 20 installed on the sea bed 200. <P>COPYRIGHT: (C)2011,JPO&INPIT |
