2026-03-07T00:35:42Z https://repository.naro.go.jp/oai

oai:repository.naro.go.jp:02000473 2026-01-23T05:07:37Z 1706970004180:1 87:661:1727312983899:663:1709881364343

地すべり対策地下水排除工による自然電位の変化 Change in Self-potential Due to Groundwater Control Works for Landslide Prevention 奥山, 武彦 オクヤマ, タケヒコ OKUYAMA, Takehiko NAKASATO, Hiroomi 中里, 裕臣 ナカサト, ヒロオミ KURODA, Seiichiro 黒田, 清一郎 クロダ, セイイチロウ 竹内, 睦雄 タケウチ, ムツオ TAKEUCHI, Mutsuo Self-potential exploration is a simple technique for observing electric potential in the ground. Non-polarization type electrodes using lead - lead chloride solution and a high input impedance voltage meter were used to measure selfpotential in this study. Streaming potential is one origin of self-potential related to soil water movement. Generation of streaming potential was verified by an infiltration test with a sand column. Field observations of self-potential were conducted at a slope landslide before and after groundwater control works were completed. Self-potential values decreased around drainage pipes after groundwater control work. Groundwater level was lowered by groundwater control works and induced water movement toward the drainage pipes at depths of 5 and 10 meters below the ground surface. The reason for the decrease in self-potential around drainage pipes is thought to be caused by downward water seepage. 独立行政法人農業工学研究所 NATIONAL INSTITUTE FOR RURAL ENGINEERING INDEPENDENT ADMINISTRATIVE INSTITUTION 2005-03-31 jpn departmental bulletin paper https://doi.org/10.24514/0002000473 https://repository.naro.go.jp/records/2000473 10.24514/0002000473 0915-3314 農業工学研究所技報 Technical report of the National Research Institute of Agricultural Engineering 203 231 237 https://repository.naro.go.jp/record/2000473/files/TRNRIAE203_p231-237.pdf application/pdf 292 KB 2024-04-04