@article{oai:kitami-it.repo.nii.ac.jp:00009112, author = {渡邊, 康玄 and WATANABE, Yasuharu and 矢野, 雅昭 and YANO, Masaaki and 井上, 卓也 and INOUE, Takuya and 山口, 里実 and YAMAGUCHI, Satomi and 渡邉, 和好 and WATANABE, Kazuyoshi and 平井 康幸 and HIRAI, Yasuyuki}, issue = {4}, journal = {土木学会論文集B1(水工学)}, month = {}, note = {To elucidate influence of bedrock cover thickness on bar morphology in free bar generating condition, we conducted hydraulic experiments. We changed bed material thickness (less and enough for fully grown bar height) and bedload feed rate (equilibrium state and 30% of equilibrium state). The results showed that bedrock exposures around bar fronts were stretched in the case bedrock cover thickness is thinner than fully grown bar height. But, in the case bedrock cover thickness is same as fully grown bar height, the exposures were not stretched. We assumed that easiness of bedrock exposer by bed material erosion and exposure rate at bar formed time related to the occurrence of exposure stretch. In the combined condition case of enough bed material thickness for bar height growth and 30% of equilibrium bedload feed, the exposure rate was not increased during experiment.}, pages = {I_1003--I_1008}, title = {岩河床河川における覆礫厚が自由砂州形状に及ぼす影響}, volume = {71}, year = {2015}, yomi = {ワタナベ, ヤスハル} }