| 摘要 |
PROBLEM TO BE SOLVED: To permit to correspond to the angles of the top of slope and of the toe of slope on the job site by forming each side net with the length of an upper side of each bottom net, which is provided in a freely rotatable manner for bendable bottom net respectively, an excess length portion is formed in a range projected out from the bottom net, and making the bottom net bendable within the range of overlaying of the excess length portion. SOLUTION: A coop unit 30 for the top of slope is constituted with bottom nets 31, 32 bendable at the middle portion, side nets 33, 34 provided in a freely turnable manner at one side of either right or left, and a partition net 35 erected in a turnable manner at the bending portions of the bottom nets 31, 32. Portions between bottom nets 31, 32 and side nets 33, 34 or between bottom nets 31, 32 and the partition net 35 are coupled in a foldable manner by coupling coils 36 or the like, and the portion between the side nets 33, 34 and the side edge of partition net 35 is coupled by binding wire or the like. And each side net 33, 34. has a formed excess length portion 37 in a projected range by making the length of the upper side made longer than the coupling side of the bottom nets 31, 32, and the excess length portions 37, 37 of the side nets 33, 34 are overlaid when the bottom nets 31, 32 are positioned on the same plane and the bottom nets 31, 32 are made bendable within the overlaying range.
|
