当前位置: X-MOL 学术Wood Sci. Technol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Influence of different structural installation conditions on the progress of wear of wooden check dam elements
Wood Science and Technology ( IF 3.4 ) Pub Date : 2020-05-01 , DOI: 10.1007/s00226-020-01181-6
Hiromi Akita

This study was constructed in 1953 with the aim of clarifying the effects of differences in structural installation conditions, such as the downstream slope and the installation of concrete dams directly above, on the degree of wear of wooden check dam elements. A wear survey was conducted on the wooden check dam, and wear was compared with that of the wooden check dam located downstream. As a result, in the second to fourth tier counted from the top, there is a difference of nearly two times in the average value of the residual ratio of the cross-sectional area, and a small downstream slope affects the progress of wear. Considering the fact that sand and gravels with large particle sizes are suppressed at the time of water discharge by the concrete dam directly above, the wear of the elements is 1–5 years with the flow of water containing fine sediments in non-flooding. It was considered to be progressing in the range of 2 mm/year. The number of years of loss of element diameter is estimated to be up to 100 years in the case of an element diameter of about 200 mm, which is not largely inconsistent with the actual condition of the wooden check dam, which has been destroyed for 98 years in this survey site.

中文翻译:

不同结构安装条件对木制止回坝构件磨损进程的影响

本研究建于 1953 年,旨在阐明结构安装条件的差异,例如下游斜坡和混凝土坝的安装直接对木制止回坝元件磨损程度的影响。对木坝进行了磨损调查,并将磨损与位于下游的木坝进行了磨损比较。因此,从上数第二层到第四层,截面积残留率的平均值相差近两倍,下游坡度较小,影响磨损进程。考虑到正上方的混凝土坝在泄水时抑制了大粒径的砂石,元件的磨损为 1-5 年,在非洪水中含有细小沉积物的水流。它被认为在 2 毫米/年的范围内取得进展。在单元直径约200毫米的情况下,单元直径损失的年数估计可达100年,这与98年被毁的木坝的实际情况不大不符。年在这个调查站点。
更新日期:2020-05-01
down
wechat
bug