ሗ࿌Ἑᕝᢏ⾡ㄽᩥ㞟, ➨20ᕳ, 2014ᖺ6᭶㹇㹁ࢱࢢࢆ⏝࠸ࡓὶỈᆺࢲ࣒㈓Ỉụෆ࡟࠾ࡅࡿᅵ◁⛣ື㸫ሁ✚㐣⛬ࡢࣔࢽࢱࣜࣥࢢ
MONITORING OF SEDIMENT TRANSPOERT AND DEPOSITION PROCESSIN IN-INSTREAM FLOOD MITIGATION DAM USING RFID TECHNOLOGYゅ ဴஓ1࣭಴ᶫ ᐇ2࣭▼⏣⿱ဢ2࣭Mohammad Ebrahim Meshkati Shahmirzadi3
Tetsuya SUMI, Makoto KURAHASHI, Hiroya ISHIDA
1ṇ఍ဨ ༤ኈ(ᕤ) ி㒔኱Ꮫᩍᤵ 㜵⅏◊✲ᡤỈ㈨※⎔ቃ◊✲ࢭࣥࢱ࣮(ࠛ611-0011 Ᏹ἞ᕷ஬ࣨᗉ)2㠀఍ဨ ᰴᘧ఍♫ᘓタᢏ⾡◊✲ᡤᮾிᮏ♫ࢲ࣒㒊(ࠛ103-8430 ᮾி㒔୰ኸ༊᪥ᮏᶫ὾⏫3-21-1)
3ṇ఍ဨ ி㒔኱Ꮫ◊✲ဨ 㜵⅏◊✲ᡤỈ㈨※⎔ቃ◊✲ࢭࣥࢱ࣮(ࠛ611-0011 Ᏹ἞ᕷ஬ࣨᗉ)Recently, number of in-stream flood mitigation dams which are usually empty and will store flood
flow in only short period is increasing. This structure can be understand ecofriendly because it can sluice
incoming sediments through bottom outlets naturally and reduce adverse environmental impacts on
downstream river below dams. But there are still unknown factors such as effects of grain size on
sediment passing thorough reservoir. Based on past studies, it has been noted that coarse gravels andstones bigger than a certain level may not be discharged but left in the reservoir because of the differencein tractive force in the channel upstream of the reservoir and in the reservoir although fine sediments areadequately discharged through the bottom outlet.
We conducted a field survey on the Masudagawa Dam in Shimane prefecture, a typical flood
mitigation dam in Japan, by using RFID (Radio-Frequency Identification Device) technology to track themovement of gravels by several floods in the reservoir area from 2009 to 2013. Sediment transport anddeposition process in reservoir area is discussed longitudinally and transversely both by tracking data ofgravels and 1D/2D numerical models.
Key Words : In-stream flood mitigation dams, reservoir sedimentation, RFID, Masudagawa Dam㸯㸬ࡣࡌࡵ࡟ ᅜ㝿኱ࢲ࣒఍㆟(ICOLD)࡛ࡣ㸪ࠕ௒ᚋࡢࢲ࣒ࡢከࡃࡣከ┠ⓗ࡛࠶ࢁ࠺ࡀ㸪100ᖺ㛫࠶ࡓࡾᩘ㐌㛫⛬ᗘࡢὥỈ᫬ࢆ㝖࠸࡚࡯࡜ࢇ࡝✵ࡢ≧ែࢆಖࡘὥỈㄪ⠇ᑓ⏝ࢲ࣒ࡣ⎔ቃ㡰ᛂᆺ࡜఩⨨࡙ࡅࡽࢀࡿ㸬ࠖ࡜㏙࡭ࡽࢀ࡚࠸ࡿ1)㸬ᅜእ࡛ࡣ㸪⡿ᅜ㸪Ḣᕞ㸦ࢫ࢖ࢫ㸪࣮࢜ࢫࢺࣜ࢔࡞࡝㸧࡛ࡇࡢࡼ࠺࡞ὥỈㄪ⠇ᑓ⏝ࢲ࣒㸦Flood Retention Basin㸧࡟ࡼࡿὥỈ⟶⌮ࡀ㐍ࡵࡽࢀ࡚ࡁ࡚࠸ࡿ2)-6)㸬
᪥ᮏ࡛ࡣ㸪ࡇࡢὥỈㄪ⠇ᑓ⏝ࢲ࣒ࡣࠕὶỈᆺࢲ࣒ࠖ࡜ࡋ࡚㸪Ἑᗋ㒊࡟ᨺὶタഛࢆ᭷ࡋ㸪ᖹᖖ᫬࡟ࡣὶỈࡢ㈓␃
ࢆ⾜ࢃࡎὶධỈ࡜࡯ࡰྠࡌỈ㉁ࡀ⥔ᣢࡉࢀࡿࡇ࡜ࡸ㸪㨶㢮➼ࡢ⁋ୖ࣭㝆ୗࡸᅵ◁ࡢὶୗ࡞࡝ࡢἙᕝࡢ㐃⥆ᛶࢆ☜ಖࡋࡸࡍ࠸ࡇ࡜࡞࡝ࡢ⎔ቃ㠃ࡢ≉ᚩࡀὀ┠ࡉࢀ࡚࠸ࡿ㸬᪥ᮏ࡟࠾ࡅࡿᐇ⦼ࡣ㸪୺࡜ࡋ࡚᫛࿴30ᖺ௦࠿ࡽ50ᖺ௦࡟࠿ࡅ࡚㒔㐨ᗓ┴ࡢᅵᆅᨵⰋ஦ᴗ࡜ࡋ࡚ᘓタࡉࢀࡓ୰ᑠつᶍࡢ㎰ᆅ㜵⅏ࢲ࣒ࡀ࠶ࡿ㸬୍᪉㸪ᅜᅵ஺㏻┬ᡤ⟶ࡢ┤㎄ཬࡧ⿵ຓ஦ᴗࡢࢲ࣒࡜ࡋ࡚ࡣ㸪ᓥ᰿┴┈⏣ᕝࢲ࣒(2005)࡟⥆ࡁ㸪㮵ඣᓥ┴すஅ㇂ࢲ࣒㸪▼ᕝ┴㎮ᕭࢲ࣒࡞࡝ࡀᘓタࡉࢀ㸪௒ᚋࡶቑຍࡍࡿഴྥ࡟࠶ࡿ7)-8)㸬ࡋ࠿ࡋ࡞ࡀࡽࡇ࠺ࡋࡓὶỈᆺࢲ࣒࡛⏕ࡌ࡚࠸ࡿ⌧㇟࡟㛵ࡋ࡚ࡣ㸪⌧ᆅㄪᰝ࡞࡝୍࡛㒊ࢹ࣮ࢱࡀ཰㞟ࡉࢀ࡚ࡁ࡚࠸ࡿࡀ㸪ᐇ㝿ࡢ⎔ቃኚ໬➼࡟ࡘ࠸࡚ࡣ༑ศ࡟᫂ࡽ࠿࡟࡞ࡗ࡚࠸࡞࠸9)-11)㸬
୍⯡࡟㸪㈓Ỉụෆࡢᅵ◁ὶධ࣭ሁ✚࣭᤼ฟ㐣⛬ࡣᅗࡢࡼ࠺࡞ࣉࣟࢭࢫ࡛㐍ࡴ࡜᝿ᐃࡉࢀ࡚࠸ࡿࡀ㸪⢏ᚄࡈ࡜㸪≉࡟⢒⢏ᅵ◁ࡢ‣Ỉᆅෆࡢ㍺㏦ᙧែ࡟ࡘ࠸࡚ࡣ୙᫂࡞㒊ศࡀṧࡉࢀ࡚࠸ࡿ㸬ࡍ࡞ࢃࡕ㸪㏻ᖖ≧ែ࠿ࡽὥỈࣁ࢖ࢻࣟࡀ❧ࡕୖࡀࡗ࡚ࡃࡿ࡜㸪ୖὶἙ㐨ࡼࡾࡉࡲࡊࡲ࡞⢏ᚄࡢᅵ◁ࡀ‣Ỉᆅෆ࡟ὶධࡋ࡚ࡃࡿ $ 㸬ࡉࡽ࡟ὶ㔞ࡀቑຍࡍࢀࡤ㸪ࢲ࣒ᗏ㒊࡟タ⨨ࡉࢀࡓᖖ⏝ὥỈྤࡁ࡟ࡼࡗ࡚ὥỈὶ㔞ࡀ࢝ࢵࢺࡉࢀ࡚‣Ỉࡀ㛤ጞࡉࢀ㸪ୖὶἙ㐨࡜‣Ỉᆅ㒊࡛ᅵ◁ᤲὶຊࡢࢠࣕࢵࣉࡀ⏕ࡌ࡚ᅵ◁ሁ✚ࡀጞࡲࡿ㸬≉࡟㸪኱ࡁ࡞ὥỈ᫬࡟ࡣ୍᫬ⓗ࡟ሁ◁㔞ࡀቑ኱ࡍࡿࡶࡢ࡜⪃࠼ࡽࢀࡿ㸬ὥỈࣆ࣮ࢡᚋ࡟ࡣ㸪‣ỈࡉࢀࡓỈࡢ᤼Ỉࡀ㛤ጞࡉࢀ % 㸪ᅇ᚟ࡋࡓᤲὶຊ࡟ࡼࡗ୍࡚᫬ⓗ࡟ሁ✚ࡋࡓᅵ◁ࡢ෌⛣ືࡀጞࡲࡾࢲ࣒ୗὶ࡟⮬↛᤼◁ࡉࢀ
ࡿ & 㸬ࡋ࠿ࡋ࡞ࡀࡽ㸪ࡇࡢࢱ࢖࣑ࣥࢢ࡛ࡣୖὶἙ㐨࠿ࡽࡢ౪⤥ὶ㔞ࡀῶᑡࡋ࡚࠾ࡾ㸪⣽⢏ᅵ◁ࡣ᤼ฟࡉࢀࡿࡶࡢࡢ㸪୍ᐃつᶍ௨ୖࡢ⢒⢏ᅵ◁ࡣ᤼ฟࡉࢀࡎ࡟‣Ỉᆅෆ

- 13 -

NPNP

㸸Ἑᗋᮦᩱㄪᰝ఩⨨NP෗┿ ┈⏣ᕝࢲ࣒㈓Ỉụ࡜⢒⢏ᅵ◁ሁ✚≧ἣ 㹇㹁ࢱࢢヨᩱ ࢱࢢࡣ㸪㛗ࡉ32mm㸪┤ᚄ3.8mm㸪㔜ࡉ0.8ࢢ࣒ࣛࡢ࢞ࣛࢫᑒධࢱ࢖ࣉ࡛࠶ࡿ㸬ࡇࢀࢆࢥࣥࢡ࣮ࣜࢺࣈࣟࢵࢡ࡟
┤ᚄ4mmࡢ✰ࢆ㛤ࡅᤄධࡋᶞ⬡࡛ᑒධࡋࡓࡶࡢࢆ㹇㹁ࢱࢢヨᩱ㸦௨ୗ㸪ヨᩱ㸧࡜ࡍࡿ㸬ࢱࢢ⮬యࡢᑑ࿨ࡣ30ᖺ⛬ᗘ࡛࠶ࡿࡓࡵ㸪ࢥࣥࢡ࣮ࣜࢺࣈࣟࢵࢡ࡟≀⌮ⓗ࡞◚ᦆࡀ࡞ࡅࢀࡤ㛗ᮇ㛫ࡢ㏣㊧ࡀྍ⬟࡛࠶ࡿ㸬ᅗ ὶỈᆺࢲ࣒ࡢᅵ◁ὶධ࣭ሁ✚࣭᤼ฟ㐣⛬࡟ྲྀࡾṧࡉࢀࡿྍ⬟ᛶࡀ࠶ࡿ㸬ࡇࡢࡼ࠺࡞⢒⢏ᅵ◁ࡀὶධᅵ◁඲య࡟༨ࡵࡿ๭ྜࡸ㸪ᅵ◁ሁ✚࡟ࡼࡿࢲ࣒⟶⌮ୖࡢᙳ㡪࡟ࡘ࠸࡚ࡣࡇࢀࡲ࡛༑ศ࡟᳨ウࡉࢀ࡚࠸࡞࠸㸬 ㄞྲྀჾ ୍᪉࡛➹⪅ࡽࡣ㸪୺࡟Ἑᕝᇦ࡟࠾ࡅࡿᅵ◁⛣ືࢆࣔࢽ ㄞྲྀჾࡣ㸪ࣂࢵࢸ࣮ࣜ࠾ࡼࡧ↓⥺㏻ಙ㒊࠿ࡽ࡞ࡿㄞྲྀࢱࣜࣥࢢࡍࡿᡭἲ࡜ࡋ࡚㸪㛗ᮇ࡟ࢃࡓࡾ఩⨨᝟ሗࡢ⥅⥆ჾᮏయ㸪ࢤ࣮ࢺ࢔ࣥࢸࢼ 715mm270mm16mm 㸪ほ ࡀ ྍ ⬟ ࡞ 㸪 㹇 㹁 ࢱ ࢢ 㸦 RFID (Radio FrequencyGPS㸦Global Positioning System㸧࠾ࡼࡧไᚚグ㘓⏝ࡢ
Identification Device)㸧ࢆᑟධࡋࡓ◁♟⛣ືィ ᡭἲࢆ㛤ࣀ࣮ࢺࣃࢯࢥ࡛ࣥᵓᡂࡉࢀࡿ㸬ࢤ࣮ࢺ࢔ࣥࢸࢼ㸦௨ୗ࢔Ⓨࡋ㸪ࡇࢀࡲ࡛࡟㸪῱ὶᇦ࡛ࡢ◁㜵ࢲ࣒᤼◁᫬ࡢᅵ◁⛣ࣥࢸࢼ㸧௨እࡢ⿦⨨୍ᘧࢆほ ⪅ࡀ⫼㈇࠸㸪࢔ࣥࢸࢼࢆືࡸࢲ࣒࠿ࡽࡢࣇࣛࢵࢩࣗᨺὶ᫬ࡢ㑏ඖᅵ◁ࡢ⛣ືࣉࣟỈ୰࠶ࡿ࠸ࡣẼ୰ࡢἙᗋୖ࡟࠿ࡊࡍࡇ࡜࡛ヨᩱࡢ᭷↓ࢆ12)-15)㸬ࢭࢫࡢ⌮ゎ࡟㈉⊩ࡋ࡚ࡁࡓุᐃࡍࡿ㸬ヨᩱࡀほ ࡉࢀࡓሙྜ㸪ࢱࢢᅛ᭷ࡢ㆑ู␒ྕࡑࡇ࡛ᮏሗ࡛ࡣ㸪ࡇࡢ㹇㹁ࢱࢢࢆὶỈᆺࢲ࣒㈓Ỉụෆ࡜GPSࡢ఩⨨㸪ほ ᪥᫬ࡀグ㘓ࡉࢀࡿ㸬࡟㐺⏝ࡋ㸪᪥ᮏࡢ௦⾲஦౛࡛࠶ࡿ┈⏣ᕝࢲ࣒㈓Ỉụෆࢆᑐ㇟࡟㸪⢒⢏ᅵ◁ࡢ‣Ỉᆅෆࡢ⛣ືࣉࣟࢭࢫࢆ᫂ࡽ࠿࡟㸱㸬┈⏣ᕝࢲ࣒࡟࠾ࡅࡿ◁♟⛣ືほ ࡍࡿࡓࡵࡢ⌧ᆅほ ࢆ⾜ࡗࡓ⤖ᯝ࡜ࡑࡢศᯒ⤖ᯝ࡟ࡘ࠸࡚ሗ࿌ࡍࡿ㸬᪤ሗ࡛ࡣ㸪ࢲ࣒㈓Ỉụࡢୖୗὶ᪉ྥࡢ⦪᩿ ┈⏣ᕝࢲ࣒ࡢ⌧≧࡜ほ ┠ⓗⓗ࡞ᅵ◁⛣ືྍ⬟ᛶࢆ୰ᚰ࡟㆟ㄽࢆ⾜ࡗ࡚ࡁࡓࡀ㸪ࡇࡇ࡛ࡣ≉࡟㸪㈓ỈụෆࡢἙ㐨ᶓ᩿ⓗ࡞ᤲὶຊࡢホ౯ࢆ⾜࠸㸪  ┈⏣ᕝࢲ࣒ࡢ⌧ᅾࡢ≧ἣࡣ෗┿࡟♧ࡍ࡜࠾ࡾ࡛࠶ࡾ㸪(a)ࢲ࣒ሐయୖὶࡢἙ㐨㒊࡟ࡣ㸪ࢲ࣒ᘓタ๓࠿ࡽᙧᡂࡉࢀ
᭱⤊ⓗ࡟ᅵ◁ࡀሁ✚ࡍࡿ㐣⛬ࡲ࡛ࢆᑐ㇟࡜ࡋ㸪⌧ᆅࡢሁ࡚࠸ࡿ◁ᕞࡀᏑᅾࡋ㸪(b)ࡇࡢ࠺ࡕࡢ୍㒊࡟⢒⢏ᅵ◁ࡀ㢧✚≧ἣࡢᢕᥱ࡜㸪ࡇࢀࡢ෌⌧ࢆ┠ᣦࡋࡓ㸰ḟඖἙᗋኚືⴭ࡟㞟✚ࡋ࡚࠾ࡾ㸪(c)ࡑࡢ⢏ᚄࡣ኱ࡁ࠸ࡶࡢ࡛10-15cm
ィ⟬⤖ᯝ࡟ࡘ࠸࡚⪃ᐹࡍࡿ㸬ࡢ♟࡜࡞ࡗ࡚࠸ࡿ㸬ほ ࡣ㸪㈓Ỉụෆ࡟࠾ࡅࡿࡇࢀࡽ⢒⢏ᅵ◁࡟╔┠ࡋࡓᅵ◁ὶධ࣭ሁ✚࣭᤼ฟ㐣⛬ࢆ᫂ࡽ࠿࡟㸰㸬㹇㹁ࢱࢢࢩࢫࢸ࣒
ࡍࡿࡇ࡜ࢆ┠ⓗ࡜ࡍࡿ㸬 ⿦⨨ᴫせ ㄞྲྀჾ࡟࡚㹇㹁ࢱࢢࡀᣢࡘᅛ᭷ࡢ␒ྕࢆ㆑ูࡍࡿ஦ࢆ
ࡑࡢᇶᮏᶵ⬟࡜ࡋ࡚࠸ࡿ㸬ᮏ᳨ウ࡛ࡣ㸪㛗ᮇࡢほ ᮇ㛫ࢆ⪃៖ࡋ㸪㟁ụࢆෆⶶࡏࡎㄞྲྀჾ࠿ࡽ࢔ࣥࢸࢼࢆ㏻ࡌ㟁Ἴ࡟࡚ࡑࡢᚲせ㟁ຊࡀ౪⤥ࡉࢀࡿࣃࢵࢩࣈࢱ࢖ࣉࢆ⏝࠸ࡓ㸬࡞࠾ᮏ⿦⨨ࡢࢱࢢ᳨ฟ⠊ᅖࡣ0.5m⛬ᗘ࡛࠶ࡿ㸬 ほ ᪉ἲ ࢲ࣒㈓ỈụෆἙ㐨㒊࡟ヨᩱࢆタ⨨ࡋ㸪ࡑࡢ఩⨨ࡢ⤒᫬
ኚ໬ࢆ㏣㊧ࡍࡿ㸬ヨᩱࡢᙧ≧ࡣ㸪ࢥࣥࢡ࣮ࣜࢺ〇ࡢ┤᪉య࡛㸪෗┿࡟♧ࡍ⌧ᆅࡢ≧ἣ࠾ࡼࡧㄪᰝ⠊ᅖ㏆ഐࡢἙᗋᮦᩱ⢏ᚄࢆ㋃ࡲ࠼࡚㸪ᑠ (60mm×50mm×40mm)࠾ࡼࡧ㸪኱(100mm×80mm×70mm)ࡢ2✀సᡂࡋࡓ㸬ᩘ㔞ࡣࡑࢀࡒ

- 14 -⾲タ⨨఩⨨࠿ࡽࡢ⛣ື㊥㞳⾲ヨᩱタ⨨⟠ᡤ࠾ࡼࡧಶᩘᇶ‽Ⅼグྕ ࠿ࡽࡢ
㊥㞳 P 
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533
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449
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390
պ
380
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366

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3
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33

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グྕ ࠿ࡽࡢ
㊥㞳 P 
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168
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タ⨨఩⨨࠿ࡽࡢᖹᆒ⛣ື㊥㞳
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44 m
33 m
38 m
46 m
38 m
42 m
54 m
40 m
46 m
46 m
34 m
39 m
118 m
120 m
119 m

⤒㐣᪥ᩘ
64
96355
723
842

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➨1ᅇ
➨2ᅇ
➨3ᅇ
➨4ᅇ
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45

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2ᅇ┠
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2011.06.09
2011.08.12
2011.09.13
2012.05.29
2013.06.01
2013.09.28

⤒㐣᪥ᩘ
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64
96
355
723
842

ヨᩱほ ಶᩘ
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኱
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64
64
128
22 (34%) 26 (41%) 48 (38%)
31 (48%) 27 (42%) 58 (45%)
20 (31%) 26 (41%) 46 (36%)
5 (8%)
5 (8%) 10 (8%)
7 (11%)
8 (13%) 15 (12%)

40Ỉ఩㻔㻱㻸㻚㼙㻕ㄪᰝὶධ㔞㻔㼙㻟㻛㼟㻕⾲ヨᩱほ ಶᩘ㻝㻡㻜
㻝㻞㻜35

㻥㻜
㻢㻜㻟㻜㻜㻢㻛㻝㻛㻝㻝ὀ %ࡣタ⨨ಶᩘ࡟ᑐࡋ࡚

30㻥㻛㻝㻛㻝㻝㻝㻞㻛㻝㻛㻝㻝㻟㻛㻝㻛㻝㻞㻢㻛㻝㻛㻝㻞㻥㻛㻝㻛㻝㻞㻝㻞㻛㻝㻛㻝㻞 㻟㻛㻝㻛㻝㻟㻢㻛㻝㻛㻝㻟㻥㻛㻝㻛㻝㻟᪥௜ሁ◁ᐇ⦼䝕䞊䝍ධᡭ༊㛫ᅗ┈⏣ᕝࢲ࣒ࡢὶධ㔞(2011.6㹼2013.9)ձյպրヨᩱ㻔ᑠ㻕⛣ື≧ἣヨᩱ㻔኱㻕⛣ື≧ἣ‫ۑ‬ᙜึタ⨨ಶᡤ㸸ྛ⟠ᡤ኱ᑠྛ3ಶࡢィ128ಶ㻢 㻜㻜㻜㻚㻝㻜㻚㻞
ほ(ὀ)ࢲ࣒ୗὶ࡛ࡢヨᩱⓎぢࡣ࡞࠿ࡗࡓ

ᅗヨᩱࡢ➨5ᅇほ ⤖ᯝ㸦᪥௜:2013.9.28㸧

ࢀ64ಶࡢ඲128ಶ࡛࠶ࡿ㸬ࡇࢀࡽヨᩱࡢ㆑ู␒ྕ࡜ヨᩱࢧ࢖ࢬ㸪タ⨨఩⨨ࢆ඲࡚஦๓࡟グ㘓ࡋ㸪ࡑࡢᚋࡢ㏣㊧࡛ᚓࡓ㆑ู␒ྕ࡜↷ྜࡋ఩⨨ࡢ㞟ィࢆ⾜࠺㸬2011.6.3࡟タ⨨ࡋࡓヨᩱࡢ఩⨨㸪ಶᩘࢆ⾲࡟ࡲ࡜ࡵࡿ㸬⾲୰࡟グ㏙
ࡋࡓᇶ‽Ⅼ࠿ࡽࡢ㊥㞳࡜ࡣ㸪ࢲ࣒ሐయୖὶ㠃୰ኸ࠿ࡽࡢ
┤⥺㊥㞳࡛࠶ࡿ㸬 ヨᩱほ ㄪᰝ ㄪᰝࡣࡇࢀࡲ࡛඲8ᅇヨࡳ࡚࠸ࡿࡀ㸪ቑỈ࡟క࠺ㄪᰝࡢ୰ṆࡸGPSࢹ࣮ࢱࡢಖᏑࡢ୙ලྜࡀ࠶ࡾ㸪᭷ព࡞ࢹ࣮
ࢱࡣ5ᅇศ࡜࡞ࡿ㸬ほ ⤖ᯝ࡟ࡘ࠸࡚ࡣ㸪ࡇࡢ5ᅇࢆ➨1ᅇ㹼➨5ᅇࡢㄪᰝࢹ࣮ࢱ࡜ࡋ࡚㸪ᩚ⌮࣭ศᯒࢆ⾜࠺ࡇ࡜࡜ࡋࡓ㸬ㄪᰝ⠊ᅖࡣ㸪ࢲ࣒ሐయୖὶ㠃ࡼࡾヨᩱ᭱ୖὶタ⨨఩⨨ࡲ࡛࡛࠶ࡿࡀ㸪➨5ᅇㄪᰝࡣヨᩱࡀࢲ࣒ୗὶ࡬ὶ
ฟࡋ࡚࠸ࡿྍ⬟ᛶࢆ⪃៖ࡋ㸪ࢲ࣒ୗὶ࡛ࡶㄪᰝࢆᐇ᪋ࡋࡓ㸬ྛᅇࡢほ ⤖ᯝࢆ⾲࡟♧ࡍࡀ㸪5ࣨᖺ࡛ࡢヨᩱㄆ㆑⋡ࡣᚎࠎ࡟పୗࡋ࡚ࡁ࡚࠸ࡿ㸬ࡲࡓ㸪➨5ᅇㄪᰝ⤖ᯝ࡟࠾ࡅࡿヨᩱⓎぢ఩⨨ࢆᅗ࡟♧ࡍࡀ㸪ࢲ࣒ୗὶ࡛ࡣヨᩱࡣⓎぢࡉࢀ࡞࠿ࡗࡓ㸬㻜㻚㻟㻜㻚㻠ᇶ‽Ⅼ䛛䜙䛾㊥㞳㻔㼗㼙㻕䠇䠇䠇䠇䠇䠇」ᩘᅇほ䠍ᅇ䛾䜏ほ䠎ᅇ䛾䜏ほ䠏ᅇ䛾䜏ほ䠐ᅇ䛾䜏ほ䠑ᅇ䛾䜏ほ㻜㻚㻡䛺䛧㻜㻚㻢ͤ㯮Ⅼ⥺ࡣヨᩱタ⨨఩⨨ᅗ ヨᩱࡢ⛣ື≧ἣ ┈⏣ᕝࢲ࣒ࡢὶἣ ほ ᮇ㛫୰ࡢ┈⏣ᕝࢲ࣒ࡢὶධ㔞ࢆᅗ࡟♧ࡍ㸬ὶ㔞
ࡣ2013/8/25ࡢฟỈࡀ261.2m3/s࡜᭱ࡶከࡃ㸪ḟ࠸࡛ྠᖺ
6/19ࡢ122.8m3/s࡛࠶ࡗࡓ㸬➨4ᅇ࠿ࡽ➨5ᅇㄪᰝࡲ࡛ࡢᮇ㛫࡟㸪ㄪᰝᮇ㛫᭱኱つᶍࡢฟỈࡀ2ᗘⓎ⏕ࡋࡓࡇ࡜࡜࡞
ࡿ㸬ࡇࡢ᫬ࡢ‣Ỉ῝ࡣ᭱኱࡛7m⛬ᗘ࡛࠶ࡿ.

 ほ ヨᩱࡢ⛣ື㊥㞳࡜ฟ⌧ഴྥ ヨᩱࡢタ⨨఩⨨࠿ࡽほ ᆅⅬࡲ࡛ࡢ⛣ື㊥㞳࡟ࡘ࠸࡚⾲࡟♧ࡍ㸬➨1ᅇ࡜➨2ᅇࡢ㛫࠾ࡼࡧ➨3ᅇ࡜➨4ᅇࡢ㛫࡟ฟỈࡀ᭷ࡗࡓ࡟ࡶ㛵ࢃࡽࡎ㸪ほ ࡉࢀࡓヨᩱࡢ⛣ື㊥㞳ࡢᖹᆒ್ࡣᩘmࡢᕪ␗࡜࡞ࡗ࡚࠸ࡿ㸬➨5ᅇ࡛ࡣ㸪ㄪᰝ⠊ᅖୖὶ࡟㓄⨨ࡋࡓヨᩱࡀୗὶ࡛ከࡃⓎぢࡉࢀ㸪ᖹᆒ⛣ື㊥㞳ࡀ኱ࡁࡃ࡞ࡗࡓ㸬➨4ᅇ㹼➨5ᅇㄪᰝ㛫࡛Ⓨ⏕ࡋࡓὥỈࡀ㸪ㄪᰝᮇ㛫ෆ࡛つᶍ࣭⥅⥆᫬㛫࡜ࡶ࡟᭱኱࡛࠶ࡗࡓࡇ࡜ࡀཎᅉ࡜⪃࠼ࡽࢀࡿ㸬 ヨᩱࡣ㆑ู␒ྕ࡟࡚ࡑࡢ⛣ືほ ᒚṔࢆ☜ㄆࡍࡿࡇ࡜ࡀྍ⬟࡛࠶ࡾ㸪ヨᩱࡢ⛣ື≧ἣࢆᅗ࡟♧ࡍ࡜࠾ࡾ࡟ᩚ⌮ࡋࡓ㸬ᅗࡢᶓᲬࡣヨᩱࡢ⛣ືᒚṔ࡛㸪ࡑࢀࡒࢀࡢほ≧ἣ࡟ᚑ࠸㸪ྛᅇ࡛ほ ࡉࢀࡓࡶࡢ࡜㸪➨1㹼5ᅇ࡛2
ᅇ௨ୖほ ࡉࢀࡓࡶࡢࢆⰍศࡅࡋ࡚࠸ࡿ㸬ࡲࡓ㸪ヨᩱࡢ- 15 -պ

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㻞㻡㻑㻞㻜㻜㻝㻡㻜
㻝㻜㻜
㻡㻜

㻜㻑
㻜㻜㻚㻝㻜㻚㻞㻜㻚㻟
ほ ᇶ‽Ⅼ䛛䜙䛾㊥㞳㻔㼗㼙㻕㻜㻜㻚㻠㻝㼔㻜㻚㻡㻡㼔㻣㼔㻥㼔㻝㻝㼔 㻝㻟㼔 㻝㻡㼔 㻝㻣㼔 㻝㻥㼔 㻞㻝㼔 㻞㻟㼔᫬㛫ᅗ2011.07.01࡜2013.8.25ࡢฟỈἼᙧ䐟䐮ᤲὶຊ᭱኱್䛾ໟ⤡⥺㻔㻞㻜㻝㻝ᖺ㻣᭶ฟỈ㻕ᤲὶຊ᭱኱್䛾ໟ⤡⥺㻜㻚㻜㻤㻔㻞㻜㻝㻟ᖺ㻤᭶ฟỈ㻕㻜㻚㻜㻢ヨᩱ(኱䠅㝈⏺ᤲὶຊ㻜㻚㻜㻠ヨᩱ(ᑠ䠅㝈⏺ᤲὶຊ㻜㻚㻜㻞㻜㻚㻜㻜㻜㻜㻚㻝㻜㻚㻞㻜㻚㻟ほ ᇶ‽Ⅼ䛛䜙䛾㊥㞳㻔㼗㼙㻕㻜㻚㻠㻜㻚㻡㻜㻚㻢ͤ㯮Ⅼ⥺䛿ヨᩱタ⨨఩ᅗฟỈ᫬ྛ఩⨨࡟࠾ࡅࡿ᭱኱ᤲὶຊࡢໟ⤡⥺ձյպր㻜㻚㻝㻡ヨᩱ㻔ᑠ㻕⛣ື≧ἣὶྥձ㻜㻚㻝ヨᩱ㻔኱㻕⛣ື≧ἣ䠇 」ᩘᅇほ䠇 䠍ᅇ䛾䜏ほ䠇 䠎ᅇ䛾䜏ほ䠇 䠏ᅇ䛾䜏ほ䠇 䠐ᅇ䛾䜏ほ䠇 䠑ᅇ䛾䜏ほヨᩱ㻔኱㻕㝈⏺ᤲὶຊ䛺䛧㻜㻚㻜㻡᭱኱ᤲὶຊ㻔㻞㻜㻝㻝㻚㻣㻚㻝㻕᭱኱ᤲὶຊ㻔㻞㻜㻝㻟㻚㻤㻚㻞㻡㻕ヨᩱ㻔ᑠ㻕㝈⏺ᤲὶຊ㻜㻜㻜^ V / U  1 g`1 / 2 d 3 / 2 /Qࠉ㻜㻚㻝㻜㻚㻞ほ࡟ࡼࡾồࡵࡿ࡜㸪d=80mm㸪50mm࠸ࡎࢀࡢሙྜ࡟࠾࠸
࡚ࡶ㸪R*Ӎ671.0ࢆ‶㊊ࡋ㸪㝈⏺ᦶ᧿㏿ᗘu*Cࡢ㛵ಀᘧࢆ௨ୗ࡟ᚓࡿ㸬䐨㻜㻚㻝㻜ࡇࡇ࡟㸪Ĳ㸸ᤲὶຊ㸪ȡ㸸Ỉࡢᐦᗘ㸪㹥㸸㔜ຊຍ㏿ᗘ㸪R㸸ᚄ῝㸪i㹣㸸࢚ࢿࣝࢠ࣮໙㓄㸪ĲC㸸㝈⏺ᤲὶຊ㸪u*C㸸㝈⏺ᦶ᧿㏿ᗘ ࡛࠶ࡿ㸬㝈⏺ᦶ᧿㏿ᗘࡣᒾᇉᘧ࡟ࡼࡾ㸪ヨᩱࡢᐇ ẚ㔜Ȫ/Ȩ=2.00㸪Ỉࡢື⢓ᛶಀᩘȤ=0.01308cm2/s (10Υ)࡜ࡋ࡚R*ࢆ㸪

0.05 V / U  1 gd
49d .........................................(3)䐣㻜㻚㻝㻞W UgRie ࠉ........................................(1)2
W C U  u*C ࠉ......................................(2)u*2C㻟㼔ͤ㯮Ⅼ⥺ࡣヨᩱタ⨨఩⨨ᅗ タ⨨⟠ᡤูⓎぢ⋡㸦඲ヨᩱ㸧タ⨨ಶᩘ࡟ᑐࡍࡿほ ࡉࢀࡓಶᩘࡢ๭ྜࢆⓎぢ⋡࡜ᐃ⩏ࡋ㸪ࡇࢀࢆ᭱ึ࡟タ⨨ࡋࡓሙᡤࡈ࡜࡟ࣉࣟࢵࢺࡋࡓࡶࡢ
ࢆᅗ࡟♧ࡍ㸬ࡇࢀ࡟ࡼࡾ㸪᭱ୗὶࡢタ⨨⟠ᡤ1ࡢヨᩱࡀ㸪➨1ᅇ㸪2ᅇ
࡛ࡣ100%ほ ࡉࢀ࡚࠾ࡾ࡯࡜ࢇ࡝⛣ືࡋ࡚࠸࡞࠿ࡗࡓ
ࡢ࡟ᑐࡋ㸪➨3ᅇ࡛ࡣ㸪Ⓨぢ⋡17㸣࡜኱ࡁࡃῶᑡࡋ࡚࠸
ࡿࡇ࡜ࡀศ࠿ࡿ㸬ࡑࡢᚋ㸪➨4ᅇ࡛Ⓨぢ⋡67%࡜࡞ࡿࡀ㸪➨5ᅇ࡟࠾࠸࡚ࡣ㸪Ⓨぢ⋡ࡀࢮࣟࡲ࡛పୗࡋ࡚࠸ࡿ㸬ࡇࡢ㛫ࡣヨᩱタ⨨௨ᚋ᭱኱࡜࡞ࡿὥỈࡀ2ᗘⓎ⏕ࡋࡓࡇ࡜࡛㸪ࢲ࣒ᇶ‽Ⅼࡼࡾ0.3km௜㏆ࡢἙᗋࡀὙ᥀ࡉࢀ㸪タ⨨
ᆅⅬ8ࡢヨᩱⓎぢ⋡ࡀቑຍࡍࡿ࡜࡜ࡶ࡟㸪タ⨨ᆅⅬ1࡛ࡣሁ✚ᅵ◁ࡀቑ࠼࡚ヨᩱࡀᇙἐࡋ㸪Ⓨぢ⋡ࡀῶᑡࡋࡓ࡜⪃࠼ࡽࢀࡿ㸬௨ୖࡢほ ⤖ᯝࡼࡾ㸪ฟỈ࡟కࡗ࡚㐍⾜ࡍࡿሁ◁ᙧ≧ࡢ୰࡛Ἑᗋ஺᥮ᒙୗ㒊࡬ࡢᇙἐࡀ⧞ࡾ㏉ࡋⓎ⏕ࡋ࡚࠸ࡿࡇ࡜ࡀ᥎ᐃࡉࢀࡿ㸬 ᤲὶຊ࡜ほ ⤖ᯝࡢ㛵ಀ ┈ ⏣ ᕝ ࢲ ࣒ ㈓ Ỉ ụ ࡢ Ἑ 㐨 ᩿ 㠃 ᙧ ≧ (2010.11) ࡜2011.07.01࠾ࡼࡧ2013.8.25ࡢฟỈࢹ࣮ࢱ࡟࠾ࡅࡿ୙➼ὶィ⟬ࡼࡾฟỈ᫬ࡢᤲὶຊࢆᚓ࡚㸪ヨᩱࡢ㝈⏺ᤲὶຊ࡜ẚ㍑ࡍࡿ㸬ࡇࡇ࡛┤᪉య࡛࠶ࡿヨᩱࡢࡳ࡞ࡋ⢏ᚄdࢆ㸪ࡩ
ࡿ࠸ࡢ㏻㐣ᑍἲ࡜ࡋ࡚኱80mm㸪ᑠ50mm࡜ࡋࡓ㸬࡞࠾㸪Ἑᗋ࡟ാࡃᤲὶຊȫ࠾ࡼࡧヨᩱࡢ㝈⏺ᤲὶຊȫCࡣࡑࢀ
ࡒࢀ(1)(2)࡟ࡼࡾ⟬ฟࡉࢀࡿ㸬R*

2011/7/1
2013/8/25

㻞㻡㻜ᤲὶຊ䠄䡐㻛㼙㻛㼟㼑㼏 㻞 㻕඲య Ⓨぢ⋡

㻣㻡㻑㻟㻜㻜㻞㻜㻝㻝㻛㻤㻛㻝㻞Ⓨぢ⋡㻞㻜㻝㻝㻛㻥㻛㻝㻟Ⓨぢ⋡㻞㻜㻝㻞㻛㻡㻛㻞㻥Ⓨぢ⋡㻞㻜㻝㻟㻛㻢㻛㻝Ⓨぢ⋡㻞㻜㻝㻟㻛㻥㻛㻞㻤Ⓨぢ⋡ᤲὶຊ 㻔䡐㻛䡉㻛㼟㼑㼏㻞㻕յὶ㔞(m3/s)ձ㻝㻜㻜㻑㻜㻚㻟㻜㻚㻠ᇶ‽Ⅼ䛛䜙䛾㊥㞳㻔㼗㼙㻕㻜㻚㻡㻜㻚㻢ͤ㯮Ⅼ⥺ࡣヨᩱタ⨨఩⨨ᅗᤲὶຊ࡜ヨᩱࡢ⛣ື≧ἣᅗ࡟2011.07.01࠾ࡼࡧ2013.8.25ࡢฟỈἼᙧࢆ♧ࡍ㸬ࡲࡓ㸪ࣆ࣮ࢡὶ㔞๓ᚋࡢἙ㐨࡟࠾ࡅࡿᤲὶຊࢆ⦪᩿᪉ྥ࡟ᩚ⌮ࡋ㸪ྛ఩⨨࡟࠾ࡅࡿᤲὶຊ᭱኱್ࡢໟ⤡⥺ࢆᅗ࡟♧ࡍ㸬

- 16 -ࡲࡓ㸪ᅗ࡛♧ࡋࡓ඲ヨᩱࡢ⛣ື≧ἣ࡜ᅗ࡛♧ࡋࡓᤲὶຊࢆ㔜ࡡྜࢃࡏ࡚ᅗ࡟♧ࡍ㸬ࡇࢀࡼࡾ㸪ᤲὶຊࡀヨᩱ(኱)ࡢ㝈⏺ᤲὶຊࢆୗᅇࡿ0.3kmᆅⅬࡼࡾୗὶ࠿ࡽヨᩱ(኱)ࡢⓎぢಶᩘࡀቑ࠼࡚࠸ࡿࡇ࡜ࡀ☜ㄆ࡛ࡁࡿ㸬ᑐࡋ࡚㸪ヨᩱ(ᑠ)ࡣ0.3kmᆅⅬ࡛ࡢⓎぢಶᩘࡀᑡ࡞ࡃ㸪ᤲὶຊࡀヨᩱ(ᑠ)ࡢ㝈⏺ᤲὶຊࢆୗᅇࡿ0.2km௜㏆࡛Ⓨぢᩘࡀቑ࠼࡚࠸ࡿ㸬ࡲࡓ㸪ᤲὶຊࡀヨᩱ(኱)ࡢ㝈⏺ᤲὶຊ
ࢆୖᅇࡿ0.35kmᆅⅬࡼࡾୖὶ࡛ࡣ࡯࡜ࢇ࡝ヨᩱࡀぢࡘ࠿ࡽࡎ➨5ᅇㄪᰝ᫬࡟ࡣほ ಶᩘࡀࢮ࡛ࣟ࠶ࡗࡓ㸬ᖹᡂ25
ᖺ8᭶ὥỈ᫬ࡢᤲὶຊࡀ㸪0.35kmᆅⅬࡼࡾୖὶ࡛ヨᩱࡢ㝈⏺ᤲὶຊࢆୖᅇࡗࡓࡓࡵ㸪ヨᩱࡀୗὶ࡬ὶୗࡋ࡚࠸ࡿ
ࡓࡵ࡜⪃࠼ࡽࢀࡿ㸬ࡇࢀࡽࡢࡇ࡜࠿ࡽ㸪ὶ㔞Ἴᙧ࡟ࡼࡿ୙➼ὶィ⟬࡜ᒾᇉᘧ࠿ࡽᚓࡓᤲὶຊࡢィ⟬⤖ᯝഴྥ࡜㸪௒ᅇࡢヨᩱࡢ⛣ືほ ⤖ᯝࡀⰋዲ࡟ྜ⮴ࡍࡿ࡜࠸࠼ࡿ㸬2013.6᧜ᙳ ヨᩱタ⨨ձ࣭ղ௜㏆

2013.8᧜ᙳ ヨᩱタ⨨ձ࣭ղ௜㏆෗┿ ┈⏣ᕝࢲ࣒㈓Ỉụሁ✚≧ἣࡢኚ໬㸲㸬ᅵ◁⛣ື≉ᛶࢆ཯ᫎࡋࡓ㸰ḟඖἙᗋኚືィ⟬⾲ ィ⟬᮲௳୍ぴ⾲タᐃ㡯┠タᐃ್┈⏣ᕝࢲ࣒
-0.33㹼1.6km

ഛ ⪃╔┠࢚ࣜ࢔ࡢὶἣࡸἙᗋኚື࡟ᙳ㡪ࢆཬࡰࡉ࡞࠸ࡼ࠺㸪༑ศ࡞㊥㞳ࢆ࡜ࡾタᐃ㸬Ἴ⏣ᕝࡣ⪃៖ࡏࡎᖹ㠃ᙧ≧㸸㹇㹁ࢱࢢタ⨨(H23.6)๓ࡢᆅᙧࢆタH22 ┈⏣ᕝࢲ࣒㈓Ỉụᖹ㠃ᅗ ᐃᶓ᩿ᙧ≧㸸
H22 ┈⏣ᕝࢲ࣒㈓Ỉụᶓ᩿ᅗ⦪᩿㸸146 ศ๭ (10m ࣆࢵࢳ) Ἑᗋᙧ≧ࡢ㉳అࡀ኱ࡁ࠸పỈ㊰ࢆ⣽࠿ࡃศ๭ࡋࡓᶓ᩿㸸పỈ㊰㸸10 ศ๭(3.4㹼6.1m ࣆࢵࢳ)㧗Ỉᩜ㸸7 ศ๭(3.8㹼13.4m ࣆࢵࢳ)Ỉ⌮බᘧ㞟[H11 ∧]ࢆཧ⪃࡟タᐃ0.07ᑐ㇟༊㛫 ㈓ỈụෆࡢἙ㐨ᶓ᩿ⓗ࡞ᅵ◁ሁ✚㐣⛬ ࡇࢀࡲ࡛ࡢ᳨ウ࡟ࡼࡾ㸪㈓Ỉụୖὶ࡟タ⨨ࡋࡓ♟ࡀ㸪Ἑ㐨ᆅᙧ」ᩘࡢὥỈࢆཷࡅ࡚ୗὶ᪉ྥ࡟⛣ືࡋ㸪ࡑࢀࡒࢀࡢ⢏ᚄࡈ࡜࡟⦪᩿ⓗ࡞⛣ືྍ⬟ᛶࡀỴᐃࡉࢀࡿࡇ࡜ࢆ♧ࡋ࡚ࡁࡓ㸬୍᪉࡛㸪෗┿࡟♧ࡍࡼ࠺࡟㸪ᐇ㝿ࡢ㈓Ỉụෆࡢᅵ࣓ࢵࢩࣗศ๭◁ࡢሁ✚≧ἣࡣᕥྑᓊ᪉ྥ࡟୍ᵝ࡛ࡣ࡞ࡃ㸪኱ࡁ࡞ὥỈ᫬ࡢ⦪᩿ⓗ࡞⛣ື࡟ຍ࠼࡚㸪ᶓ᩿ⓗ࡞ᤲὶຊࡢホ౯ࡶᚲ㧗Ỉᩜ⢒ᗘಀᩘせ࡛࠶ࡿࡇ࡜ࢆ♧၀ࡋ࡚࠸ࡿ㸬ࡑࡇ࡛㸪௨ୗ࡟ὶỈᆺࢲᕤ஦ㄅ࡟࠾ࡅࡿ㈓Ỉụሁ◁ࢩ࣑ࣗపỈ㊰࣮ࣞࢩࣙࣥࢆཧ⪃࡟タᐃ࣒㈓Ỉụෆ࡟࠾ࡅࡿᅵ◁⛣ື≉ᛶࡢศᯒ⤖ᯝࢆ㋃ࡲ࠼ࡓ
0.03, 0.04, 0.05⢒ᗘಀᩘ⢒ᗘ࡟ࡼࡿᙳ㡪ᗘࡢẚ㍑ࡢࡓࡵ 3ᖹ㠃㸰ḟඖἙᗋኚືィ⟬࡟ࡼࡿᩘ್ゎᯒࢆ᳨ウࡍࡿ㸬ࣃࢱ࣮ࣥ࡜ࡋࡓୗὶ➃᮲௳ H23.7 ┈⏣ᕝࢲ࣒ᐇ⦼㈓Ỉ఩ ᫬้Ṕࢹ࣮ࢱୖὶ➃᮲௳ H23.7 ┈⏣ᕝࢲ࣒ᐇ⦼ὶධ㔞 ┈⏣ᕝ࡜Ἴ⏣ᕝࡢྜィὶ㔞ᶞᮌ⩌᢬ᢠ㸫ᶞᮌ⩌ㅖඖࡀ࡞࠸ࡓࡵ㸪タᐃࡏࡎ ᖹ㠃㸰ḟඖἙᗋኚືࣔࢹࣝࡢᵓ⠏
2010 ᖺ 9 ᭶Ἑᗋᮦᩱ⤖ᯝ࠿ࡽ ẚ㍑ࡢࡓࡵΰྜ⢏ᚄ࡜ᆒ୍⢏ᚄࡢ⢏ᗘᵓᡂタᐃ2 ࣃࢱ࣮ࣥ࡜ࡋࡓ
ὶỈᆺࢲ࣒㈓Ỉụࡢᖹ㠃㸰ḟඖἙᗋኚືィ⟬࡜ࡋ࡚㸪
ࠕiRIC(International River Interface Cooperative)ࠖࢆ⏝࠸㸦ࣆ࣮ࢡὶ㔞65.6m3/s㸧๓ᚋࡢ㸰ḟඖἙᗋኚືィ⟬⤖ᯝࡓ㸬ࡇࢀࡣ㸪ࡇࢀࡲ࡛USGS㸦࢔࣓ࣜ࢝ᆅ㉁ㄪᰝᡤ㸧࡛࡟࠾ࡅࡿὙ᥀⠊ᅖ࡜୍⮴ࡋ࡚࠸ࡿ㸬୍᪉㸪➨5ᅇㄪᰝ࡛
㛤Ⓨࡋ࡚ࡁࡓMD_SWMS࡜(㈈)໭ᾏ㐨Ἑᕝ㜵⅏◊✲ࢭࣥࡣ㸪ྠ⟠ᡤ࡟࠾ࡅࡿ㹇㹁ࢱࢢⓎぢಶᩘࡣῶᑡࡋ࡚࠾ࡾ㸪ࢱ࣮࡛㛤Ⓨࡋ࡚ࡁࡓRIC-Naysࡢᶵ⬟ࢆ⤫ྜࡋࡓἙᕝࡢὶ
3ࢀ࣭Ἑᗋኚືゎᯒࢯࣇࢺ࡛࠶ࡿ㸬ィ⟬᮲௳ࢆ⾲࡟♧ࡍ㸬 2013ᖺ8᭶ὥỈ㸦ࣆ࣮ࢡὶ㔞261.2m /s㸧๓ᚋࡢ㸰ḟඖἙᗋኚືィ⟬⤖ᯝ࡛ࡣ㸪ྠ⟠ᡤࡀሁ✚ഴྥ࡬࡜ኚ໬ࡋ࡚࠸ࣔࢹࣝࡣ㸪ィ⟬⤖ᯝ࡜ሁ◁ 㔞⤖ᯝ࡜ࡢẚ㍑ࡀྍ⬟࡞ࡿ㸬➨1ᅇㄪᰝ᫬࡟タ⨨఩⨨ ձ㹼ճ ௜㏆࡛Ⓨぢࡉࢀࡓ
2011ᖺ7᭶ࡢฟỈ๓ᚋࢆᑐ㇟࡜ࡋ㸪పỈ㊰⢒ᗘಀᩘ࡟ࡼ㹇㹁ࢱࢢࡣ㸪2013ᖺ8᭶ࡢ኱つᶍฟỈ᫬࡛ሁ✚ࡋࡓᅵ◁ࡿឤᗘศᯒ࡟ࡼࡾ㈓Ỉụෆᅵ◁⛣ື≉ᛶࡢ෌⌧ᛶࢆ᳨ド࡟ᇙἐࡋ㸪Ⓨぢࡉࢀ࡞࠿ࡗࡓࡇ࡜ࡀ᥎ᐃࡉࢀࡿ㸬ࡋࡓ㸬ࡇࡢ⤖ᯝ㸪ΰྜ⢏ᚄ࡟࠾ࡅࡿపỈ㊰⢒ᗘಀᩘ0.04
ࡲࡓ㸪タ⨨఩⨨ն௜㏆ࡣ2011ᖺ7᭶ὥỈ࡛ࡣሁ✚ഴྥࡢࢣ࣮ࢫࡀ᭱ࡶ㐺ྜࡍࡿ࡜ุ᩿ࡋࡓ㸬࡛࠶ࡿࡢ࡟ᑐࡋ㸪2013ᖺ8᭶ὥỈ㸦ࣆ࣮ࢡὶ㔞261.2m3/s)࡛ࡣὙ᥀༊㛫࡜࡞ࡗ࡚࠸ࡿ㸬ᙜヱ௜㏆࡛ࡣ㸪➨5ᅇㄪᰝ 㹇㹁ࢱࢢㄪᰝ⤖ᯝ࡜ࡢẚ㍑
࡛6ࡘࡢ㹇㹁ࢱࢢࡀⓎぢࡉࢀ࠾ࡾ㸪ࡇࢀࡽࡣୖὶո㹼ջ
2011ᖺ7᭶ὥỈࡢ෌⌧࡟ࡼࡿἙᗋኚືᕪศᅗ࡜➨1ᅇㄪ
ᆅⅬ࡟タ⨨ࡉࢀࡓࡶࡢࡀከ࠸ࡇ࡜ࡀ☜ㄆࡉࢀࡓ㸬タ⨨ᆅᰝ(2011ᖺ8᭶ᐇ᪋)ࡢ㹇㹁ࢱࢢ㏣㊧ㄪᰝ⤖ᯝࢆᅗ࡟㸪Ⅼնࡼࡾୖὶ࡟タ⨨ࡋࡓ㹇㹁ࢱࢢࡣ㸪㏻ᖖࡢฟỈ᫬࡟ࡇ2013ᖺ8᭶ὥỈࡢ෌⌧࡟ࡼࡿἙᗋኚືᕪศᅗ࡜➨5ᅇㄪᰝ
(2013ᖺ9᭶ᐇ᪋)ࡢ㹇㹁ࢱࢢ㏣㊧ㄪᰝ⤖ᯝࢆᅗ࡟♧ࡍ㸬 ࡢ༊㛫࡟⛣ືࡋ࡚ሁ✚࣭ᇙἐࡍࡿࡇ࡜࡛Ⓨぢࡉࢀ࡞ࡃ࡞
ࡾ㸪2013ᖺ8᭶ࡢ኱つᶍฟỈ᫬࡟෌ࡧὙ᥀ࡉࢀࡿࡇ࡜࡛➨1ᅇㄪᰝ࡛ࡣ㸪㹇㹁ࢱࢢࡣタ⨨఩⨨ձ㹼ճ௜㏆࡛ከほ ࡉࢀࡓࡶࡢ࡜᥎ᐹࡉࢀࡿ㸬ᩘⓎぢࡉࢀ࡚࠾ࡾ㸪Ⓨぢࡋࡓ⠊ᅖࡣ㸪2011ᖺ7᭶ὥỈ- 17 -ㅰ㎡㸸┈⏣ᕝࢲ࣒࡟࠾ࡅࡿ⌧ᆅㄪᰝ࡟㛵ࡋ࡚㸪ᓥ᰿┴┈⏣┴ᅵᮌᩚഛ஦ົᡤࡢ༠ຊࢆᚓࡓ㸬ࡇࡇ࡟グࡋ࡚ㅰពࢆ⾲ࡍ㸬ཧ⪃ᩥ⊩1)‫ۑ‬㸸IC ࢱࢢⓎぢ⟠ᡤ(኱)

Lempérière F. 㸸The role of dams in the XXI century. Achievinga sustainable development target, Hydropower and Dams, Issue‫ۑ‬㸸IC ࢱࢢⓎぢ⟠ᡤ(ᑠ)

Three, pp. 99-108, 2006.
2)ゅ ဴஓ㸸ࢫ࢖ࢫ࡟࠾ࡅࡿ἞Ỉᑓ⏝࢜ࣝࢹࣥࢲ࣒ࡢỈ⌮タィ࡜⟶⌮㸪ࢲ࣒ᢏ⾡No.241, pp.3-16, 2006.

3)

Sumi T. 㸸Designing and Operating of Flood Retention DryDams in Japan and USA. Proc. of ICHE Conference on HydroScience and Engineering, Nagoya, Japan, 2008.

‫ۑ‬㸸IC ࢱࢢⓎぢ⟠ᡤ(኱)‫ۑ‬㸸IC ࢱࢢⓎぢ⟠ᡤ(ᑠ)ᅗ 2011ᖺ7᭶ὥỈ๓ᚋࡢἙᗋኚືᕪศ࡜㹇㹁ࢱࢢ⛣ື≧ἣ4)ኳ㔝 㑥ᙪ㸸DRY DAMࡀᣢࡘ⮬↛⎔ቃ࡬ࡢᙳ㡪≉ᛶ, ࢲ࣒ᢏ⾡No.264, 3-14, 2008.

5)ゅ ဴஓ㸸࣮࢜ࢫࢺࣜ࢔࡟࠾ࡅࡿὶỈᆺࢲ࣒, ࢲ࣒ᢏ⾡
No.277, 1-13, 2009.

6)ゅ ဴஓ㸪⯪ᶫ᪼἞㸪ⓑ஭᫂ኵ㸸࣮࢜ࢫࢺࣜ࢔࡟࠾ࡅࡿὶ
Ỉᆺࢲ࣒㸦⥆ሗ㸧, ࢲ࣒ᢏ⾡No.287, 16-28, 2010.

7)‫ۑ‬㸸IC ࢱࢢⓎぢ⟠ᡤ(኱)୰ᮧ ኖᾈ㸸┈⏣ᕝࢲ࣒ࡢタィ࡜᪋ᕤ㸪ࢲ࣒ᕤᏛ 18(2),111-117, 2008.

‫ۑ‬㸸IC ࢱࢢⓎぢ⟠ᡤ(ᑠ)8)

Sakurai T., Aoyama T., Hakoishi N., Takasu S., Ikeda T.
Evaluation of the impact of stream type flood control dams onsediment management. Proc. of 23rd congress ICOLD, Q. 89,Brasilia, 2009.

9)

Kantoush S. A., and Sumi T. : Influence of stilling basin geometryon flow pattern and sediment transport at flood mitigation dams.
Proc. Of the 9th FISC, The Federal Interagency Sedimentationᅗ 2013ᖺ8᭶ὥỈ๓ᚋࡢἙᗋኚືᕪศ࡜㹇㹁ࢱࢢ⛣ື≧ἣConferences, Las Vegas, Nevada, pp. 115-133, 2010.
10) ┠ ᫴୍㸪➉ෆ༤㍤㸪㟷ᔱ኱ᝅ㸪㰺⸨᫂㑻㸸ὥỈㄪ⠇ᑓ⏝㸳㸬࠾ࢃࡾ࡟ࢲ࣒㸦ὶỈᆺࢲ࣒㸧ࡢᅵ◁ὶฟ≉ᛶ࡟㛵ࡍࡿㄪᰝ㸪ࢲ࣒ᕤ
Ꮫ19(1), 29-40, 2009.

 ᮏㄽᩥ࡛ࡣ㸪㹇㹁ࢱࢢࢆ⏝࠸࡚᪥ᮏࡢ௦⾲ⓗ࡞ὶỈᆺࢲ࣒࡛࠶ࡿ┈⏣ᕝࢲ࣒㈓Ỉụෆࡢ♟⛣ືほ ࣭ศᯒࢆ⾜ࡗࡓ㸬ᚓࡽࢀࡓ⤖ᯝࡣḟࡢ㏻ࡾ࡛࠶ࡿ㸬(1) 5ࣨᖺ࡛ࡢヨᩱⓎぢ⋡ࡣᚎࠎ࡟పୗࡋ࡚ࡁ࡚࠾ࡾ㸪ࢃࡎ࠿࡞ࡀࡽ࡛ࡣ࠶ࡿࡀ㸪ฟỈ࡟కࡗ࡚㐍⾜ࡍࡿሁ◁ᙧ≧ࡢ୰࡛Ἑᗋ஺᥮ᒙୗ㒊࡬ࡢᇙἐࡀ⧞ࡾ㏉ࡋⓎ⏕ࡋ࡚࠸ࡿࡇ࡜ࡀ᥎ᐃࡉࢀࡿ㸬(2) 5ࣨᖺࡢ⌧ᆅㄪᰝ⤖ᯝ࠿ࡽᚓࡓヨᩱࡢ⛣ືᒚṔࡣ㸪ฟỈἼᙧ࠿ࡽᚓࡽࢀࡓᤲὶຊࡢホ౯࡜Ⰻዲ࡟୍⮴ࡋ㸪⦪᩿ⓗ࡞⛣ືࡣ㸯ḟඖゎᯒ࡛ホ౯ྍ⬟࡛࠶ࡿ㸬(3) ㈓Ỉụෆࡢᅵ◁ࡢሁ✚≧ἣࡣᕥྑᓊ᪉ྥ࡟୍ᵝ࡛ࡣ࡞ࡃ㸪ᶓ᩿ⓗ࡞ᤲὶຊࡢホ౯ࢆ┠ⓗ࡜ࡋ࡚ᖹ㠃㸰ḟඖἙᗋኚືィ⟬ࢆᐇ᪋ࡋࡓ⤖ᯝ㸪ᅵ◁ࡢὙ᥀࣭ሁ✚⟠ᡤࡢ෌⌧ࡀྍ⬟࡛࠶ࡿࡇ࡜ࢆ᫂ࡽ࠿࡟ࡋࡓ㸬௒ᚋࡣ㸪⌧ᆅㄪᰝࢆ⥅⥆ࡍࡿ࡜࡜ࡶ࡟㸰ḟඖἙᗋኚືィ⟬ࣔࢹࣝࡢ⢭ᗘྥୖࢆᅗࡾ㸪ὶỈᆺࢲ࣒タィ㧗ᗘ໬ᡭἲ࡬ࡢ㐺⏝ࢆ᳨ウࡍࡿ㸬11) 㕥ᮌⲮྖ, ⓑ஭᫂ኵ, ⯪ᶫ᪼἞㸸ὶỈᆺࢲ࣒ࡀ᭷ࡍࡿ≉ᚩ࡟㛵ࡍࡿ◊✲ 㸫᪤ᏑὶỈᆺࢲ࣒࡬ࡢ࢔ࣥࢣ࣮ࢺ⤖ᯝ➼ࢆ
㋃ࡲ࠼࡚㸫, ᖹᡂ19ᖺᗘࢲ࣒Ỉ※ᆅ⎔ቃᢏ⾡◊✲ᡤᡤሗ㸪ㄪᰝ◊✲6-1, 2008.
12) ゅ ဴஓ㸪▼⏣ ⿱ဢ㸪బ➉ᐉ᠇㸸㹇㹁ᢏ⾡ࢆᛂ⏝ࡋࡓ◁♟⛣ື࡟㛵ࡍࡿࢺ࣮ࣞࢧㄪᰝᡭἲࡢ㛤Ⓨ㸪ỈᕤᏛㄽᩥ㞟㸪➨51ᕳ㸪631-636, 2007㸬13) ゅ ဴஓ㸪▼⏣ ⿱ဢ㸪బ➉ᐉ᠇㸸㹇㹁ࢱࢢᢏ⾡ࢆ⏝࠸ࡓࢺ࣮ࣞࢧㄪᰝᡭἲ࡟ࡼࡿ◁♟⛣ືほ , ỈᕤᏛㄽᩥ㞟㸪➨52ᕳ㸪889-894㸪2008㸬14) ゅ ဴஓ, ▼⏣⿱ဢ, బ➉ᐉ᠇ : ࢔ࢡࢸ࢕ࣈࢱࢢᢏ⾡ࢆᛂ⏝ࡋࡓ◁♟⛣ື࡟㛵ࡍࡿࢺ࣮ࣞࢧㄪᰝᡭἲࡢ㛤Ⓨ, ỈᕤᏛㄽᩥ㞟,➨54ᕳ,1123-1128, 2010.
15) ゅ ဴஓ, ▼⏣⿱ဢ, బ➉ᐉ᠇ : 㹇㹁ࢱࢢࢆ⏝࠸ࡓὶỈᆺ- 18 -ࢲ࣒㈓Ỉụෆ࡟࠾ࡅࡿᅵ◁⛣ື≉ᛶࡢᢕᥱ, ᅵᮌᏛ఍ㄽᩥ㞟,➨67ᕳ,1171-1176, 2012㸦ཷ௜㸧