| 摘要 |
PURPOSE:To extend the sevice life of a titled body and to permit the easy embedment thereof in a horizontal state by mounting a water impermeable rigid body to the outside peripheral surface in the lower part of a water permeable tubular body so that the clogging by sludge-like scum and anaerobic microorganisms hardly arises. CONSTITUTION:The water impermeable rigid body 3 is mounted to the outside peripheral surface in the lower part of the water permeable tubular body 2 having through-holes 1. As a result, the clogging by the sludge-like scum and anaerobic microorganisms hardly arises and the service life is longer. The embedment and installation of the structural body in the horizontal state are easy; in addition, the structural body is hardly deformable by land subsidence and load bearing after the embedment. |
