IDENTIFICATION OF THE ORIGIN OF TURBID WATER FLOWING INTO KAMISHIIBA DAM AND SOIL EROSION CONTROLL WITH FLOCCULANTS
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- HIGASHI Takayoshi
- 宮崎大学大学院 工学研究科
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- IRIE Mitsuteru
- 宮崎大学 工学部工学科
Bibliographic Information
- Other Title
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- 上椎葉ダムに流入する濁水の起源同定と高分子凝集剤による流出抑制効果の検討
Abstract
<p> Kamishiiba reservoir has the problem of the turbid water inflow from the upstream catchment area. The main sediment yield is on the bare ground surface after the landslide. In this study, the surface soil and river channel sediments in the catchment area were sampled for examining the similarity with the suspended solid in the turbid water inflow to the reservoir by the mineralogical method. The topsoil of the slope suspected as the cause of the turbidity was aggregated with PIC to examine the possibility of suppressing runoff. In the PIC sprayed area, the soil erosion by raindrop impact can be greatly suppressed, but cracks that developed over time reduced resistance to surface lateral flow, and the sediment yield increases slightly.</p>
Journal
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- Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)
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Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 77 (2), I_583-I_588, 2021
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390009640053675520
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- NII Article ID
- 130008160126
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- ISSN
- 2185467X
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed