旧流路部を活用した水路掘削と平面掘削の併用 による砂礫河原再生手法の提案

抄録

To conduct gravel bed river restoration, limitation of overgrowth woodland at low cost, we studied on gravel bed river restoration by river channel excavation utilizing both old channel selection and planer excavation. In the result, we succeed in introducing overflow on river terrace, conducting bed river restoration, limitation of overgrowth woodland. And we reduced costs on excavation. These results were caused by planning a setting connecting points of channel excavation to upper region of riffle. We understood the important knowledge that are applicable for the other rivers.