| 摘要 |
PROBLEM TO BE SOLVED: To provide a construction method for a catchment device with high workability in which a holed block array can be precisely installed and the quantity of cotter members supporting the holed blocks can be decreased.SOLUTION: There is provided a construction method for a catchment device including: arranging a holed block array BL on an installation surface while a plurality of cotter members 110 are dispersedly arranged at a plurality of places in an extending direction of the holed block array BL on the installation surface so as to support the holed block array BL; dispersedly arranging displacement restriction members 120 which restrict upward displacement of the holed block array BL at a plurality of places in the extending direction of the holed block array BL; and removing the displacement restriction members 120 after gaps between holed block arrays BL are filled with a filler. An arrangement position of the cotter members 110 and displacement restriction members 120 is set to a connection position K where the holed blocks 20 constituting the holed block array BL are connected to each other or to its nearby position. |
