RAINWATER STORAGE AND INFILTRATION FACILITY AND SEDIMENTATION RETAINING BOARD FOR RAINWATER STORAGE AND INFILTRATION FACILITY

WIPO Patent Application WO/2022/249501

A1

[Problem] To provide: a rainwater storage and infiltration facility with which it is possible to easily check the sedimentation state of sediment in a tank from above the facility, and to clean the entire tank easily; and a sedimentation retaining board that is applied to the rainwater storage and infiltration facility. [Solution] This sedimentation retaining board 120 is used with a plurality of frame-like block units 115 spread underground 112, the plurality of frame-like block units 115 each being formed by coupling corner parts of upper and lower surface boards by posts. The sedimentation retaining board 120 has side edge parts that closely attach to side surfaces of the posts, and is engaged between adjacent posts so that the side parts of the frame-like block units 115 are closed. A rainwater storage and infiltration facility 105 comprises a sedimentation retaining vacant part 118 surrounded by the frame-like block units, an inspection opening (122) formed above the sedimentation retaining vacant part, a rainwater inflow part communicating with the sedimentation retaining vacant part, and a water storage outflow part provided at another end of the facility. The side parts of the frame-like block units surrounding the sedimentation retaining vacant part are closed by the sedimentation retaining boards.

YUKI KAZUHISA (JP)
SUGAYA TOMOMASA (JP)

PCT/JP2021/025811

December 01, 2022

July 08, 2021

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TENSHO ELECTRIC IND CO (JP)

E03F1/00

JPH10266313A	1998-10-06
JP2015183418A	2015-10-22
JP2016145500A	2016-08-12
JP2015096680A	2015-05-21

TANABE INTERNATIONAL PATENT OFFICE, P.C. et al. (JP)

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