頁籤選單縮合
題名 | 曾文水庫集水區細粒淤砂生產過程的研究 |
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作者 | 張石角; | 書刊名 | 中華農學會報 |
卷期 | 84 1973.12[民62.12] |
頁次 | 頁53-69 |
關鍵詞 | 細粒淤砂; 曾文水庫; 集水區; |
語文 | 中文(Chinese) |
英文摘要 | Both field and experimental methods were applied to investigate the production processes of fine-grained sediment in the watershed concerned. The results reveal that not all the fine-grained sediment that deposits in the downstream reservoir is directly derived from landslides or bank collapse. As a matter of fact, it has been found that a great amount of it is the product of weathering of rock block, especially of shale, that were laid on the river beds a year before as a result of slope failure. Consequently, check dams should be located as close as possible to the sediment-yield source area or areas so as to hold up these rock blocks behind the check dams before they transform into suspended load by way of abrasion and weathering or other related processes. Ill-located check dams may have adverse effect of accelerating the siltation rate of the downstream reservoir. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。