| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete box for river revetment that is installed on the bank of a river or creek (small water channel) to protect the river or creek while also purifying water and greening the bank and surthermore, that is usable also as a fish bank. SOLUTION: The concrete box to be installed on a river bank is formed by surrounding an upper wall surface 2, each sidewall surface 3, and an inclined wall surface 4 with concrete, the inclined wall surface serving as a face of slope that slopes forward and diagonally downward. A plurality of opening windows 5 are formed in the inclined wall surface 4 which forms the face of slope. COPYRIGHT: (C)2004,JPO
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