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地すべり対策集水ボーリング末端における閉塞の要因と対策
https://doi.org/10.24514/0002001327
https://doi.org/10.24514/0002001327bdab5bee-6e89-41cf-83ea-c9a73c35ad4f
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
TRNIRE209_p1-6.pdf (1.9 MB)
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(c) 国立研究開発法人 農業・食品産業技術総合研究機構
National Agriculture and Food Research Organization, Japan |
| Item type | 紀要論文 / Departmental Bulletin Paper_03(1) | |||||||||||||||||||||
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| 公開日 | 2025-06-17 | |||||||||||||||||||||
| タイトル | ||||||||||||||||||||||
| タイトル | 地すべり対策集水ボーリング末端における閉塞の要因と対策 | |||||||||||||||||||||
| 言語 | ja | |||||||||||||||||||||
| タイトル | ||||||||||||||||||||||
| タイトル | Factors of blockage at the end of groundwater drainage pipes for landslide mitigation and a countermeasure | |||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||
| 言語 | ||||||||||||||||||||||
| 言語 | jpn | |||||||||||||||||||||
| 資源タイプ | ||||||||||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||||||||
| 資源タイプ | article | |||||||||||||||||||||
| ID登録 | ||||||||||||||||||||||
| ID登録 | 10.24514/0002001327 | |||||||||||||||||||||
| ID登録タイプ | JaLC | |||||||||||||||||||||
| 著者 |
奥山, 武彦
× 奥山, 武彦
× 黒田, 清一郎
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| 抄録 | ||||||||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||||||||
| 内容記述 | Investigation of groundwater drainage conditions with a drainage well in the course of landslide mitigation was conducted in Miyagi Prefecture. Large differences in drainage rate and water quality of drained groundwater through the horizontal drain pipes installed in the same drainage well reflected a complex geological structure of the landslide block. As for drainage from the soil bank area, drainage rate was low, and electric conductivity and ion concentrations were high compared to another area. Formation of iron hydroxide that caused blockage in the drainage pipes depended on the conditions of each pipe. Pipe end blockage was remarkable on the banked side, and a correlation was seen between the amount of iron discharged from the drained groundwater (iron concentration x drainage rate) and the blockage level. Concentration of Fe2+ in drained groundwater was as much as 3.94 mg/L. The low oxygen air controlled oxidation of Fe2+ in the drainage pipes. Iron hydroxide was formed by exposure to the atmosphere at the end of the drainage pipes. Soil particles trapped by iron oxide enlarged the blockage. Formation of iron oxide was not able to be completely stopped because some oxygen was dissolved in the groundwater. However, an extension pipe attached to the end of the drainage pipe isolated the drained water from the air and controlled formation of the blockage in our experiments. The possibility of a blockage can be easily estimated in the field by measuring the pH and oxidation-reduction potential (Eh) of the drain. |
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| 言語 | en | |||||||||||||||||||||
| 書誌情報 |
ja : 農村工学研究所技報 en : Technical report of the National Institute for Rural Engineering 巻 209, p. 1-6, 発行日 2009-03-31 |
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| 出版者 | ||||||||||||||||||||||
| 出版者 | 独立行政法人農業食品産業技術総合研究機構農村工学研究所 | |||||||||||||||||||||
| 言語 | ja | |||||||||||||||||||||
| 出版者 | ||||||||||||||||||||||
| 出版者 | National Agriculture and Food Research Organization, National Institute for Rural Engineering | |||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||
| ISSN | ||||||||||||||||||||||
| 収録物識別子タイプ | PISSN | |||||||||||||||||||||
| 収録物識別子 | 1882-3289 | |||||||||||||||||||||
