| 摘要 |
<p>The stone (1b) has side surfaces running between an upper side (2) and a lower side in a depth direction (4). A seepage area (9) is formed at one side surface and water-permeable in the depth direction. The seepage area extends transverse to the depth direction while a remaining part of the stone is water-impermeable. The side surface is formed as spring side surfaces (5b, 5c) with protruding springs, and another side surface is formed as a groove side surface with a groove (8) corresponding to the spring. An independent claim is also included for a riprap including a stone.</p> |
