| 摘要 |
PURPOSE:To enable construction of orderly and stable protected shore by a method wherein a notch staged part is formed at a shoulder part on the one side, and rubble-mound is laid over an upper surface part. CONSTITUTION:After banking is applied on a leeve and shaping is effected, rubble-mounted 2 is placed. A lower most stage step block B1 is arranged on the rubble-mound 2 so that a notcdh stage part 1a is positioned on the upper stage side. A second stage step block B2 is arranged so that the lower corner pat of the block B2 is engaged with the stepped part 1a of the block B1. Further, blocks B3, B4, and B5 are laid in a similar manner described above as the blocks are orderly engaged with each other. |
