| 摘要 |
PROBLEM TO BE SOLVED: To turn and adjust a slope protection block around an axial line in substantially vertical direction. SOLUTION: A block main body is formed by a front wall, left and right side walls extended backwards from left and right side end parts of the front wall, a rear wall provided between rear ends of both side walls, and a projecting bar part for connection and fitting and a recessed bar part for connection and fitting as connection parts formed over left and right side end faces of the front wall and left and right side faces in front end parts of the left and right side walls. The projecting bar part for connection and fitting is formed by extending in substantially vertical and upward direction for a bottom face of the block main body from a lower end on one side end face of the front wall, and a horizontal cross sectional shape is formed into a semi-circular arc projecting shape. The recessed bar part for connection and fitting is formed by extending in substantially vertical and upward direction for the bottom face of the block main body from a lower end on the other side end face of the front wall, and a horizontal cross sectional shape is formed into a semi-circular arc recessed shape in which the projecting bar part for connection and fitting can be fitted.
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