FILLER FOR RAINWATER STORAGE INFILTRATION TANK AND RAINWATER STORAGE INFILTRATION TANK USING THIS FILLER

摘要

PPROBLEM TO BE SOLVED: To provide a filler and a rainwater storage infiltration tank, easy in maintenance, by easily constructing the filler and a watering pipe. PSOLUTION: This rainwater storage infiltration tank forms a ceiling part on an upper surface of the filler of the uppermost stage by a covering means, by longitudinally-laterally and vertically stacking the filler in a water storage tank formed by digging down the ground surface. The filler is formed by integrally connecting hollow columns and the watering pipe noncontact with an edge frame by a girder, by vertically arranging a plurality of hollow columns and the watering pipe having opening upper-lower surfaces inside the plane square edge frame. A water supply pipe is installed in the watering pipe, or the water supply pipe is installed in the watering pipe by detachably installing the watering pipe separately molded in the edge frame and/or the girder in the vertical direction. A groove for discharging a sediment such as sand, mud and refuse is arranged on a bottom surface of the tank, and a sediment storage pit is desirably formed in the groove. PCOPYRIGHT: (C)2007,JPO&INPIT