River legal fishing ground foundation block

摘要

(57) [Summary] [Purpose] The present invention is to construct a deep bed cavity in a river bed by assembling it on the foundation of a river revetment, among the concrete precast products that become super-sized with the increase in the size of construction machinery. For the purpose of facilitating the habitat of river mussels filled with natural stones and slag in the trunk, and at the same time stabilizing the construction material by using the slope protection protection material at the top of the soil retaining point. There is. [Structure] First, the present invention is to insert the front retaining wall into the riverbed, A through hole is provided in the upper part to form a cavity with a bottom slab, a crown, and a back retaining wall, and natural stones and slags are filled inside to create further voids, facilitating the inhabitation of river fish snails and at the same time back. The present invention is constructed by using the top end of the retaining wall as the foundation abutment of the slope protection construction material.