䊐䉳䉺ᛛⴚ⎇ⓥႎ๔㩷╙ 㪋㪍 ภ㩷 㩷 㪉㪇㪈㪇 ᐕ㩷ࡈࠖ࡞࠳ࡓ߳ߩ⎈࡮ォ࿶⋓࿯Ꮏᴺߩㆡ↪
̆ ੑゲ࿁ォဳᠣᜈᷙวᯏ(DAM)ߩ㐿⊒ ̆ർ ፉ 㩷᣿⑔ ፉ િ ੑ*1࿯૒ౝఝ੺᭎ⷐ⠧᧎ൻߒߚࡈࠖ࡞࠳ࡓ߿ߚ߼ᳰߩႇ૕ᡷୃ㧔⵬ᒝ߿ṳ᳓㒐ᱛ㧕ߦ⾂᳓ᳰౝߦၸⓍߒߚᐩᵆ࿯ࠍᚲⷐߩᒝᐲߣㆤ᳓ᕈࠍ߽ߟࠃ߁ߦ‫ޔ‬࿕ൻᡷ⦟ߒߡ▽ႇ࿯ߦ೑↪ߔࠆߎߣ߇ߢ߈ࠆ⎈࡮ォ࿶⋓࿯Ꮏᴺ 1)㧘2)߇ㆡ↪ߐࠇߡ޿ࠆ‫⃻ޕ‬࿷‫ޔ‬⎈㨯ォ࿶⋓࿯Ꮏᴺߦ߅ߌࠆᐩᵆ࿯ߩೋᦼ࿕ൻߦߪ᳢↪ᕈߩ޽ࠆࡃ࠶ࠢࡎ࠙ࠍࡌ࡯ࠬࡑࠪࡦߦ೑↪ߒߚ࠻࡟ࡦ࠴ࡖ࡯ဳᷙวᠣᜈᯏ߇૶↪ߐࠇࠆߎߣ߇ᄙ޿߇‫ߩߎޔ‬ᯏ᪾ߪ▽ႇⷙᮨ߇ᄢ߈޿ࡈࠖ࡞࠳ࡓߩႇ૕ᡷୃߦߪᠣᜈ⢻ജ߇ਇ⿷ߔࠆ໧㗴߇޽ࠆ‫ޕ‬ᧄⓂߢߪ‫ဳ࡯ࡖ࠴ࡦ࡟࠻ޔ‬ᯏߦઍࠊࠆ▽ႇⷙᮨߩᄢ߈޿ࡈࠖ࡞࠳ࡓߩႇ૕ᡷୃߦ߽ኻᔕߢ߈ࠆᠣᜈ⢻ജࠍ᦭ߔࠆᣂߒ޿ੑゲ࿁ォဳᠣᜈᷙวᯏ㧔DAM㧦Double Axial Mixing 㧕ߩ᭎ⷐߣ‫ߩߘޔ‬ᠣᜈᷙวᕈ⢻ࠍታᣉᎿ࡟ࡌ࡞ߢ⏕⹺ߒߚ⚿ᨐࠍႎ๔ߔࠆ߽ߩߢ޽ࠆ‫ޕ‬Development of double axial mixing method
to repair damaged embankments using cement-mixed muddy soil

Abstract
Most of old fill-type dams have led to sediment build-up in reservoirs, causing pollution and loss ofreservoir capacity. In general, this sediment has a high-water-content and is made up of very soft
clayey soil. We have developed a new method to repair the damaged embankment by using a mixtureof this sediment and cement. Up to now, the muddy soil and cement have been mixed using a trencher
type mixture machine, which is fine for small ponds. But trencher type mixers have insufficient
capacity for large-scale fill-dams. In this paper, we report on use of the double axial mixing method,and its use under actual site conditions.

䉨䊷䊪䊷䊄䋺 ࿕ൻ᧚ᷙว㩷 ⃻႐⹜㛎㩷 ᐩᵆ࿯䋪䋱㩷 ᑪ⸳ᧄㇱ㩷 ࿯ᧁ䉣䊮䉳䊆䉝䊥䊮䉫䉶䊮䉺䊷㩷ႇ૕ᡷୃ㩷 ဋ৻ᕈ㩷 ᒝᐲ䋭㪋㪎䋭䊐䉳䉺ᛛⴚ⎇ⓥႎ๔㩷 ╙ 㪋㪍 ภ§䋱䋮䈲䈛䉄䈮㩷⠧᧎ൻߒߚࡈࠖ࡞࠳ࡓ߿ߚ߼ᳰߩႇ૕ᡷୃ㧔⵬ᒝ߿ṳ᳓㒐ᱛ㧕ߦ⾂᳓ᳰౝߦၸⓍߒߚᐩᵆ࿯ࠍᚲⷐߩᒝᐲߣㆤ᳓ᕈࠍ߽ߟࠃ߁ߦ‫ޔ‬࿕ൻᡷ⦟ߒߡ▽ႇ࿯ߦ೑↪ߔࠆߎߣೋᦼ࿕ൻᣣᢙ(tS)࿕ൻ᧚ᐩᵆ࿯⸃⎈(Dmax)ೋᦼ࿕ൻ࿯⎈㨯ォ࿶࿯߇ߢ߈ࠆ⎈࡮ォ࿶⋓࿯Ꮏᴺ 1)㧘2)߇ㆡ↪ߐࠇߡ޿ࠆ‫⃻ޕ‬࿷‫ޔ‬⎈㨯ォ࿶⋓࿯Ꮏᴺߦ߅ߌࠆᐩᵆ࿯ߩೋᦼ࿕ൻߦߪ᳢↪ᕈߩ޽ࠆࡃ࠶ࠢࡎ࠙ࠍࡌ࡯ࠬࡑࠪࡦߦ೑↪ߒߚ࠻࡟ࡦ࠴

▽ႇ(᠋಴ߒ㨯ᢝဋߒ㨯ォ࿶)ㆤ᳓ᕈਥ૕ជ ೥ࡖ࡯ဳᷙวᠣᜈᯏ߇૶↪ߐࠇࠆߎߣ߇ᄙ޿߇‫ߩߎޔ‬ᯏ᪾ᒝᐲਥ૕ᒝᐲਥ૕ࠪࠚ࡞࠱࡯ࡦࠪࠚ࡞࠱࡯ࡦߪ▽ႇⷙᮨ߇ᄢ߈޿ࡈࠖ࡞࠳ࡓߩႇ૕ᡷୃߦߪᠣᜈ⢻ᣢ⸳ႇ૕ജ߇ਇ⿷ߔࠆ໧㗴߇޽ࠆ‫ޕ‬
ᧄⓂߢߪ‫ဳ࡯ࡖ࠴ࡦ࡟࠻ޔ‬ᠣᜈᷙวᯏߦઍࠊࠆ‫▽ޔ‬ႇᱛ᳓࠻࡟ࡦ࠴

ⷙᮨߩᄢ߈޿ࡈࠖ࡞࠳ࡓߩႇ૕ᡷୃߦ߽ኻᔕߢ߈ࠆᠣࠦࠕ࠱࡯ࡦၮ␆࿾⋚ࡈࠖ࡞࠲࡯࠱࡯ࡦ࿑䋱㩷 ⎈䊶ォ࿶⋓࿯Ꮏᴺ䈱᭎ᔨ࿑㩷ᜈ⢻ജࠍ᦭ߔࠆᣂߒ޿ੑゲ࿁ォဳᠣᜈᷙวᯏ㧔DAM㧦Double Axial Mixing 㧕ߩ᭎ⷐߣ‫ߩߘޔ‬ᠣᜈᷙวᕈ⢻ࠍታᣉᎿ࡟ࡌ࡞ߢ⏕⹺ߒߚ⚿ᨐࠍႎ๔ߔࠆ߽ߩߢ޽ࠆ‫ޕ‬ᷫߦࠃࠅኈᤃߦ೙ᓮߢ߈ࠆ߽ߩߩ‫ޔ‬ㅢᏱߩ▽ႇ࿯ߦᲧセߔࠆߣ⎕უᤨߩ߭ߕߺ߇ዊߐߊ⣀ᕈ⊛ߥ߭ߕߺエൻဳߩᔕജ㨪߭ߕߺ․ᕈࠍ␜ߒ‫ޔ‬ᣢ⸳ႇ૕ߣߩ㑆ߩᭂ┵ߥᒝ§䋲䋮⎈䊶ォ࿶⋓࿯Ꮏᴺ䈱᭎ⷐ㩷ᐲ߿ᄌᒻᕈߩ⋧㆑ߦ⿠࿃ߒߚࠢ࡜࠶ࠢ߇↢ߓ߿ߔߊ⾂⎈㨯ォ࿶⋓࿯Ꮏᴺ 1)㧘2)ߪ‫ޔ‬࿑䋱ߦ᭎ᔨ⊛ߦ␜ߔࠃ߁ߦ‫ޔ‬᳓↪ߩႇ૕ߦߪ૶↪ߢ߈ߥ߆ߞߚ‫⎈ޕ‬㨯ォ࿶⋓࿯Ꮏᴺߪ‫ޔ‬ᳰౝߦၸⓍߒߚᐩᵆ࿯ࠍ࠮ࡔࡦ࠻♽࿕ൻ᧚ߩᷝടߦࠃ࿕ൻಣℂ࿯ࠍ▽ႇ࿯ߦ೑↪ߔࠆ႐วߩ໧㗴ὐࠍ‫৻ޔ‬ቯᣣࠅᚲⷐߩᒝᐲߣㆤ᳓ᕈࠍ᦭ߔࠆ▽ႇ࿯ߦ࿕ൻᡷ⦟ߒߡ‫ޔ‬

ᢙ tS ߛߌೋᦼ࿕ൻߐߖߚᐩᵆ࿯ࠍ࿕ൻㅜ਄ਛߦ⸃⎈ߒႇ૕ߩ⵬ᒝ߿ṳ᳓㒐ᱛߩߚ߼ߩࠦࠕ࠱࡯ࡦ߿ࠪࠚ࡞࠱ߡㅢᏱߩ▽ႇ࿯ߣห᭽ߦォ࿶ߒߡ▽ႇߔࠆߣ‫ޔ‬ౣ࿕ൻᤨ࡯ࡦࠍ▽ႇߔࠆ߽ߩߢ޽ࠆ‫ޕ‬ᠣᜈᷙวᯏߪ᏷⚂ 5mᷓߩᔕജ㨪߭ߕߺ․ᕈ߇ㅢᏱߩ▽ႇ࿯ߣૃߚ߭ߕߺ⎬ൻߐ 2㨪3m㐳ߐ⚂ 25m ߩࡇ࠶࠻ౝߢᐩᵆ࿯ߦࠬ࡜࡝࡯

ဳߦߥࠆᕈ⾰ࠍ೑↪ߒߡᣢ⸳ႇ૕ߣߩኒ⌕ᕈ㧔ߥߓߺ㧕ൻߒߚ࿕ൻ᧚ࠍᷝട࡮ᷙวߒߚ࿕ൻಣℂ࿯‫ࠆࠁࠊ޿ޔ‬ೋࠍ⦟ߊߒߚ߽ߩߢ޽ࠆ‫ޕ‬ᦼ࿕ൻ࿯ࠍḰ஻ߔࠆߩߦ૶↪ߐࠇࠆ‫▽ޕ‬ႇߪ৻ቯߩೋᦼ
࿕ൻᣣᢙ tS ߛߌ⚻ㆊߐߖߚ࿕ൻㅜ਄ߦ޽ࠆೋᦼ࿕ൻ࿯

§䋳䋮ᣂဳᠣᜈᷙวᯏ䈱㐿⊒⋡ᮡ㩷ࠍⷙቯߩᦨᄢ☸ᓘ Dmax ߢ⸃⎈ߒߡ߆ࠄ‫ޔ‬ㅢᏱߩ▽ႇ࿯ߩ႐วߣห᭽ߦဋ৻ߦ᠋಴ߒ‫৻ޔ‬ቯጀෘߦᢝဋߒߡ߆ࠄⷙ

⃻࿷‫⎈ޔ‬㨯ォ࿶⋓࿯Ꮏᴺߦ߅ߌࠆᐩᵆ࿯ߩೋᦼ࿕ൻߦ

ቯ࿁ᢙ N ࿁ߛߌォ࿶ߒߡⴕ߁㧔ߎߩ⁁ᘒߦ޽ࠆ࿕ൻಣℂ૶↪ߒߡ޿ࠆ࠻࡟ࡦ࠴ࡖ࡯ဳᯏߪ‫ߦࡦࠪࡑࠬ࡯ࡌޔ‬ጊⓍ࿯ࠍ⎈㨯ォ࿶࿯ߣ޿߁㧕‫ޕ‬ႇ૕⴫ጀㇱߪᴺ㕙ု⋥ᣇะߦ

ߺ 1.4m3 ࡃ࠶ࠢࡎ࠙ࠍ૶↪ߒߡ‫ⶄޔ‬ᢙߩᠣᜈ⠢ࠍขࠅઃෘߐ 50cm ⒟ᐲߩⷒ࿯ࠍ⸳ߌࠆߩࠍၮᧄߣߔࠆ߇‫ⷒޔ‬࿯ߌߚࠠࡖ࠲ࡇ࡜࡯ࠍ❑ߦߒߡ‫ޔ‬࿕ൻኻ⽎࿯ਛߦ㋦⋥ߦ᛼ߪ⎈㨯ォ࿶࿯ㇱߩੇ࡮Ḩ➅㄰ߒߦࠃࠆഠൻ㒐ᱛ‫ޔ‬㜞ࠕ࡞ㄟߺߣᒁᛮ߈ࠍ➅ࠅ㄰ߒߡᷓߐᣇะߩဋ৻ߦᷙวߔࠆࠞ࡝᳓ߩṁ಴㒐ᱛ‫ߡߒߘޔ‬ᒛ⦼ߥߤߩᬀᩱߩၮ⋚ጀߣߔ߽ߩߢ‫ ⚂ޔ‬200㨪250m3/ᣣߩᠣᜈ⢻ജࠍ᦭ߒߡ޿ࠆ‫ߚޕ‬߼ᳰߩႇ૕ᡷୃᎿ੐ߢߪ▽ႇⷙᮨ߇ዊߐߊ‫ߩߎޔ‬⒟ᐲߩࠆߚ߼ߢ޽ࠆ‫ޕ‬⎈㨯ォ࿶࿯ߢߪೋᦼ࿕ൻᣣᢙ tS ߣ⸃⎈㨯ォ࿶ᓟߩᣣᢙ tCCᠣᜈ⢻ജߢ޽ࠇ߫ᣉᎿ⢻ജ߇ਇ⿷ߔࠆߎߣߪߥ޿‫߆ߒޕ‬ࠍวߖߚ t=tS㧗tCC ߇ో࿕ൻᣣᢙߦߥࠅ‫ޔ‬tS ߪ⸃⎈㨯ォ࿶ᓟߒߥ߇ࠄ‫ߩࡓ࠳࡞ࠖࡈޔ‬ႇ૕ᡷୃߢߪ▽ႇⷙᮨ߇ᄢ߈ߊ‫ޔ‬ߩౣ࿕ൻᒝᐲߦᓇ㗀ߒ‫ޔ‬tS ߇⍴޿߶ߤォ࿶⋥ᓟߩᒝᐲ߇ല₸⊛ߥᣉᎿߩߚ߼ߦߪߐࠄߦ㜞޿ᠣᜈ⢻ജ߇ⷐ᳞ߐૐ޿߇‫ߩߘޔ‬ᓟߩᒝᐲ⊒⃻߇ᄢ߈޿‫ޔߚ߹ޕ‬Dmax ߪᒝᐲࠇࠆߎߣ߇ᄙ޿‫ޕ‬ߣㅘ᳓ᕈߦᓇ㗀ߒ‫ޔ‬Dmax ߩᄢ߈޿⎈㨯ォ࿶࿯߶ߤᒝᐲߣ

࠻࡟ࡦ࠴ࡖ࡯ဳᯏࠍߘߩ߹߹ᄢဳൻߔࠆᣇᴺ߽⠨߃ࠄㅘ᳓ᕈ߇㜞ߊߥࠆ‫⎈ޔߡߞ߇ߚߒޕ‬㨯ォ࿶࿯ߦࠃࠅᚲⷐ

ࠇࠆ߇‫߇ࡦࠪࡑࠬ࡯ࡌޔ‬ᄢဳൻߒߡㅢᏱߩ࠻࡟࡯࡜࡯ߢ

ߩᒝᐲߣㆤ᳓ᕈࠍ᦭ߔࠆႇ૕ࠍ▽ㅧߔࠆߦߪ tS ߣ tCC‫ޔ‬ߪㆇ៝ਇน⢻ߦߥࠅ᳢↪ᕈߦ៊ߥࠊࠇߡߒ߹߁໧㗴߇

Dmax ࠍㆡಾߦ▤ℂߔࠆߎߣ߇ᔅⷐߣߥࠆ‫ޕ‬޽ࠆ‫ဳ࡯ࡖ࠴ࡦ࡟࠻ޔߚ߹ޕ‬ᯏߪ‫ࠃߩࡠ࠼ࡋߣ߽ߣ߽ޔ‬ᓥ᧪‫ޔ‬නߥࠆᐩᵆ࿯ߦ࿕ൻ᧚ࠍᷝടߒߚߛߌߩ࿕ൻಣ߁ߥ⿥エᒙ࿯ߩ࿕ൻࠍ⋡⊛ߦ㐿⊒ߐࠇߡ߈ߚ⚻✲߆ࠄ‫ޔ‬ℂ࿯㧔ೋᦼ࿕ൻ࿯ߦ⋧ᒰ㧕ߪ‫ޔ‬ᒝᐲࠍ࿕ൻ᧚ᷝട㊂ߩടႇ૕ᡷୃߢ૶↪ߔࠆߎߣ߽޽ࠆ⍾␕ಽࠍᄙߊ฽߻ᵆ࿯䋭㪋㪏䋭䊐䉞䊦䉻䊛䈻䈱⎈䊶ォ࿶⋓࿯Ꮏᴺ䈱ㆡ↪
㩷࿑䋲㩷 㪛㪘㪤 䈱ో૕࿑㩷࿑䋳㩷 ᠣᜈㇱ䉝䉺䉾䉼䊜䊮䊃㩷ࠍ࿕ൻߔࠆߦߪᠣᜈ࠻࡞ࠢ߇ਇ⿷ߔࠆ႐ว߽޽ࠆߎߣ߿‫ޔ‬ᠣᜈㇱߩ⎕៊߿᡿㓚߇⊒↢ߒ߿ߔ޿ߥߤ‫ߦࠄߐޔ‬⠴ਭᕈߦఝࠇߚᯏ᪾߽ᔅⷐߣߐࠇߡ޿ࠆ‫ޕ‬ ߘߎߢ‫ޔ‬એ਄ߩⷐ᳞ߦ╵߃ࠄࠇࠆᠣᜈ⢻ജ߇㜞ߊ‫ޔ‬⠴ਭᕈߦఝࠇߚᣂဳߩᠣᜈᷙวᯏࠍ㐿⊒ߔࠆߎߣߦߥߞߚ‫ޕ‬ᣂဳᯏߪ‫ޔ‬Ԙ⃻ⴕߩ࠻࡟ࡦ࠴ࡖ࡯ဳᯏߣหߓࡌ࡯ࠬࡑࠪࡦ㧔ጊⓍ
ߺ 1.4m3 ⚖㧕ࠍ૶↪ߔࠆԙᠣᜈ⢻ജߪ 450㨪500m3/ᣣ⒟ᐲߣߔࠆ
Ԛᷓߐ 3m ߹ߢဋ৻ߥᷙว߇ߢ߈ࠆԛᠣᜈㇱ߇᭴ㅧ⊛ߦ㗎ਂߢ޽ࠆߎߣࠍ⋡ᮡߣߒߡ㐿⊒ߒߚ‫ޕ‬§䋴䋮ᣂဳᠣᜈᷙวᯏ㩿㪛㪘㪤㪀䈱᭎ⷐ㩷౮⌀ 㪈㩷 㪛㪘㪤 䈱ᠣᜈᷙวㇱ㩷ᣂဳᯏߦࠃࠆᠣᜈᷙวߪᷓߐ 2.5m ⒟ᐲߩࡇ࠶࠻ౝߩ

ൻኻ⽎ᵆ࿯ߩᕈ⾰ߦᔕߓߡਔ⠪߆ࠄㆬᛯߔࠆ߽ߩߣߒ‫ޔ‬࿕ൻኻ⽎ᵆ࿯ߦࠬ࡜࡝࡯ൻߒߚ࿕ൻ᧚ࠍဋ৻ߦᷝടߢ

⍾␕ಽߩࠃ߁ߥ☻☸ሶࠍ฽߻ᐩᵆ࿯‫ߪ޿ࠆ޽ޔ‬ជ೥࿯╬߈ࠆࠃ߁ߦ‫ဳ࡯ࡖ࠴ࡦ࡟࠻ޔ‬ᯏߣห᭽ߦ‫ޔ‬ᠣᜈㇱࠍࡇ࠶ࠍട߃ߚᷙวᵆ࿯ߢߪᠣᜈᛶ᛫߇㜞޿ᵆ࿯ߢߪࡄ࠼࡞

࠻ౝߦ㋦⋥ᣇะߩ᛼ㄟߺߣᒁᛮ߈ࠍ➅㄰ߒⴕ߁ᒻᑼߣ

ဳ‫ޔ‬㜞฽᳓Ყߥᐩᵆ࿯ߢߪ࠴࡚࠶ࡄ࡯ဳߣ޿߁ࠃ߁ߦᄌ

ߒߚ‫ޕ‬DAM ᯏߩᠣᜈㇱߪ‫ޔ‬ᠣᜈ⢻ജߪᠣᜈㇱߩ᛼ㄟߺ߃ࠆߎߣߦߒߚ‫ޕ‬▸࿐㧔᏷ᅏⴕ߈㧕ߣᷓߐߦࠃࠅ᳿߹ࠆߎߣ߆ࠄ‫ޔ‬࿑㧟 ᠣᜈゲߩ࿁ォᣇะߪ‫ޔ‬ᠣᜈਛߩᛶ᛫ࠍዋߥߊߔࠆߚ߼

ߦ␜ߔࠃ߁ߦ‫ޔ‬ᠣᜈᷓߐ 2.5m‫ޔ‬ᠣᜈ▸࿐ 2.17m0.9m߿‫ޔ‬ᄙ᭽ߥᠣᜈࡄ࠲࡯ࡦ߇㆐ᚑߢ߈ࠆࠃ߁ߦ‫ޔ‬਄࡮ਅゲߣߒߚ㐷ဳࡒࠠࠪࡦࠣࡈ࡟࡯ࡓߦᠣᜈ⠢ࠍ৻ቯ㑆㓒ߢ߇ߘࠇߙࠇ⁛┙ߦᱜ࡮ㅒ࿁ォߢ߈ࠆߎߣߒߚ‫ޔߚ߹ޕ‬࿁ขࠅઃߌߚ࿁ォゲࠍ਄࡮ਅᲑ㧞Ბߦⵝ⌕ߒߚ߽ߩߢ޽ࠆ‫ޕ‬ォㅦᐲߪជ೥ᠣᜈࠍ઻߁ਅゲࠍૐㅦ࿁ォ㧔ᦨᄢ 56rpm㧕
‫ޔ‬ᠣᜈ⠢ߪ⠴ਭᕈߦఝࠇࠆࡄ࠼࡞ဳߣ‫ޔ‬ᠣᜈߩဋ৻ᕈߦᠣᜈᛶ᛫߇ዊߐ޿਄ゲࠍਅゲߩ⚂ 1.3 ୚ߩ㜞ㅦ࿁ォ㧔ᦨఝࠇࠆ࠴࡚࠶ࡄ࡯ဳߩ 2 ⒳㘃ߣߒ‫ޔ‬਄࡮ਅߩ࿁ォゲߢ૶

ᄢ 71rpm㧕ߣߒߚ‫ޕ‬਄㨯ਅߩ࿁ォ⠢ߩᱜ࡮ㅒ࿁ォߪᠣᜈ޿ಽߌࠆߎߣߣߒߚ‫ޕ‬౮⌀㧝ߦߪ DAM ߩࡒࠠࠪࡦࠣࡈ

ᵆ࿯߇਄㨯ਅゲ㑆ࠍ੤Ꮕ⁁ߦ⒖േߔࠆࠃ߁ߦߒߡ࿁ォ⠢࡟࡯ࡓㇱಽࠍ␜ߔ‫ޕ‬ਅゲߦߪᠣᜈㇱࠍ࿕ൻኻ⽎ᵆ࿯ਛߦ๟ㄝࠍဋ৻ߦᠣᜈߢ߈ࠆࠃ߁ߦ‫ߚ߹ޔ‬ᠣᜈ⠢ㇱࠍ਄㨯ਅ᛼ߒㄟ߻㓙ߦᔅߕជ೥ᠣᜈࠍ઻߁ߚ߼㗎ਂߢන⚐ߥ᭴

ᣇะ⒖േߩ➅㄰ߒߦࠃࠅᷓߐᣇะߦ߽ဋ৻ߦᠣᜈ߇ߢ

ㅧߩࡄ࠼࡞ဳߩߺࠍ૶↪ߔࠆߎߣߦߒߚ‫ޕ‬਄ゲߦߪ࿕߈ࠆࠃ߁ߦߒߚ‫ޕ‬䋭㪋㪐䋭䊐䉳䉺ᛛⴚ⎇ⓥႎ๔㩷 ╙ 㪋㪍 ภ⴫䋱㩷 ࿕ൻ䊏䉾䊃ౝ䈱ฦ೉䈱ᠣᜈᤨ㑆㩷
ࡇ࠶࠻

(m)

10.0

඙ ಽ

a

5.0

P5P3
P1

P4

P2a’

1೉ಽߩೋᦼ࿕ൻ㊂㧦
5.02.02.5=25m3

ᠣᜈᤨ㑆ฦ㩕㩩㨹㩎ߩ

T㩇㩡㩢㨺㊂㧔min.㧕

3

VSL(m )

㩇㩡㩢㨺ଏ⛎㊂ᠣᜈㅦᐲQ

㧔m3/hr.㧕(॓/min.)P1

12125462㧔2231㧕

P215100370㧔2185㧕

P32075277㧔2139㧕

P43050185㧔292㧕

P540

37.5

139㧔269㧕

5.546

1.0 1.52.5

ೋᦼ࿕ൻ㊂V=255೉=125m3a㧙a’ជ೥࿯㧦ZE࿾ጊជ೥✢ᐩᵆ࿯㧦ZM

5.0࿑䋴㩷 ࿕ൻ䊏䉾䊃䈱ᒻ⁁㩷౮⌀䋲㩷 㪛㪘㪤 䈮䉋䉎ᠣᜈ⁁ᴫ㩷

2000
OS࠳ࡓ‫ޓ‬ᷙวᵆ࿯㧔nV=1.50㧘w =42.3%㧕
ೋᦼ࿕ൻ࿯㧦t=tS=10ᣣ‫ ޓ‬࿕ൻ᧚㧦࠮ࡔࡦ࠻♽㧔㜞᦭ᯏ⾰࿯↪㧕‫࡯࡝࡜ࠬ ޓ‬ᷝട㧦w/c=1.0ೋᦼ࿕ൻ࿯ߩ৻ゲ࿶❗ᒝߐ‫( ޓ‬q u)IS10 (kN/m2)

1800
1600

§䋵䋮ᠣᜈᕈ⢻⏕⹺䈱䈢䉄䈱⹜㛎ᣉᎿ㩷৻ゲ࿶❗⹜㛎㧦D/H=50mm/100mm

DAM ߩᠣᜈᕈ⢻ߪએਅߦ␜ߔࠃ߁ߥ⹜㛎ᣉᎿࠍታᣉ1400

ߒߡ⺞ߴߚ‫ޕ‬1200

㧝㧕ᠣᜈㅦᐲߩᓇ㗀㩷 MC=42+0.119䍃(q u )IS101000

ታᣉᎿߢᗐቯߔࠆᠣᜈㅦᐲߦ߅޿ߡဋ৻ߥೋᦼ࿕ൻ
800߇ߢ߈ࠆߎߣࠍ⏕⹺ߔࠆߚ߼ߦ‫ޔ‬ᠣᜈㅦᐲߩᓇ㗀ࠍ⺞ߴࠆߚ߼ߩ⹜㛎ᣉᎿࠍⴕߞߚ‫⹜ޕ‬㛎ߪႇ૕ᡷୃᎿ੐ਛߩ

600

SO ࠳ࡓߩᳰᢝౝ࿾⋚ߦ‫ޔ‬࿑㧟ߦ␜ߔࠃ߁ߥ‫ޔ‬᏷ 5m㐳400

ߐ 10m ߢᷓߐ 2.5m ߩ⍱ᒻḴߦࠃࠆ࿕ൻࡇ࠶࠻ࠍ⸳ߌߡ
ታᣉߒߚ‫࠻࠶ࡇޕ‬ౝߦߪ࿕ൻኻ⽎࿯ߣߒߡ‫ޔ‬ᳰౝߦၸⓍ200

ߒߚᐩᵆ࿯ࠍ ZM=1.0m‫ޔ‬ᣢ⸳ႇ૕࿯ࠍ ZE=1.5m ߢᛩ౉ߒ0050

100

150

200

250

3

࿕ൻ᧚ᷝട㊂‫ޓ‬MC (kg/m )ߡᷙวᵆ࿯ࠍḰ஻ߒߚ㧔ᷙวᲧ nV= ZE / ZM=1.50㧕‫ޕ‬࿕ൻࡇ࠶࠻ߪ࿑ߦ␜ߔࠃ߁ߦ 2m ᏷ߩ 5 ೉ߦಽߌ
㧔1 ೉ 25m3㧕
‫ޔ‬ฦ೉ߢᠣᜈㅦᐲࠍᄌ߃ߚ‫ޕ‬ ࿕ൻ᧚ߪᐩᵆ࿯ߩࠃ߁ߥ㜞฽᳓Ყエᒙ࿯ߩ࿕ൻߦㆡ࿑䋵㩷 ቶౝ㈩ว⹜㛎䈮䉋䉎㩿㫈㫌㪀㪠㪪㪈㪇 䈫㰱㪤㪚 䈱㑐ଥ㩷ߒߚ࠮ࡔࡦ࠻♽㧔㜞᦭ᯏ⾰࿯↪㧕ࠍ૶↪ߒߚ‫ޕ‬ᷙวᵆ࿯ߩ࿕ൻᒝᐲ․ᕈߪ࿕ൻ᧚ᷝട㊂ MC㧔kg/m3㧕ࠍᄌ߃ߡ

䋭㪌㪇䋭䊐䉞䊦䉻䊛䈻䈱⎈䊶ォ࿶⋓࿯Ꮏᴺ䈱ㆡ↪
㩷 1800

16003150m /hr.

 1400312002(q u)IS*/㱍FL=1059kN/m






2

䌁䌶䌥(q u)IS=891kN/m

2(q u)IS*/㱍FL=1059kN/m

2

1200

 1000

1400

37.5m /hr.

2৻ゲ࿶❗ᒝߐ (q u)IS10 (kN/m )350m /hr.

375m /hr.

ᄢේ࠳ࡓ‫ޓ‬ᷙวᵆ࿯㧔nV=1.50 㧕‫ޓ‬ೋᦼ࿕ൻ࿯㧦t=tS=10ᣣ‫ޓޓޓ‬࿕ൻ᧚㧦࠮ࡔࡦ࠻♽ 㜞᦭ᯏ⾰࿯↪
‫࡯࡝࡜ࠬޓޓޓ‬ᷝട㧦w/c=1.0100m /hr.

৻ゲ࿶❗ᒝߐ (q u)IS10 (kN/m )1600⃻႐࿕ൻ⹜㛎‫ޓ‬ᄢේ࠳ࡓᷙวᵆ࿯㧔nV=1.50 㧕‫ޓ‬ೋᦼ࿕ൻ࿯㧦t=tS=10ᣣ‫ޓޓޓ‬࿕ൻ᧚㧦࠮ࡔࡦ࠻♽ 㜞᦭ᯏ⾰࿯↪
‫࡯࡝࡜ࠬޓޓޓ‬ᷝട㧦w/c=1.0
3800
2(q u)IS*=706kN/m

600

3ታᣉᎿ䋺90m /hr.એਅ

1000800‫غ‬٠٤ٌ㧦૏⟎A1㨪A4‫ع‬ٟ٨ً㧦૏⟎A5㨪A8400

400

200

20000



0

1020304050060246810121416

ࡇ࠶࠻ౝ૏⟎‫ޓ‬X (m)ᠣᜈᤨ㑆‫ޓޓ‬t (min.)࿑䋶㩷 ᠣᜈᤨ㑆䈏ೋᦼ࿕ൻᒝᐲ䈮෸䈿䈜ᓇ㗀㩷

2(q u)IS*=706kN/m3

MC=160kg/m

600

࿑䋸㩷 ࿕ൻ䊏䉾䊃ౝ䈱ᒝᐲ䈱ⓨ㑆⊛䈭ᄌേ㩷৻ゲ࿶❗ᒝߐ‫(ޓ‬q u)IS10

16.0

3.0

1.0A8

2

5.02.516.0=200m3
b㧙b’
2.5

1.0

A5㵥A6

2.5

2.5

A1㵥A4

2.5Z(m)

5.0

B

5.0

1.00

1.50

2.00
ࡇ࠶࠻ᐩ㕙

2.50

3.00




1600

0.50

0.5



1400

࿑䋷㩷 䊏䉾䊃ౝ䈱ᒝᐲ䈱ⓨ㑆⊛ᄌേ䉕⺞䈼䉎䈢䉄䈱⹜㛎㩷

2A7a㧙a’

A4b’a’A61200(q u)IS*/㱍FL=1059kN/m



A5B

A3(q u)ISAverage =917kN/m



A22(kN/m )

1000

32



A1X(m)

800

MCѳ160kg/m

ࡇ࠶࠻ᐩ㕙߆ࠄߩᷓߐ‫ ޓ‬Z (m)

5.0



2.0

b1.0



600

(q u)IS*=706kN/m

a

400

0.00

4.0

4.0

4.0

2.0

200

3.0

⹜ᢱណข૏⟎

0

1.0



(m)

⃻႐࿕ൻ⹜㛎‫ޓ‬OS࠳ࡓᷙวᵆ࿯㧔nV=1.50 㧕‫৻ޓ‬ゲ࿶❗⹜㛎㧦D/H=75mm/150mm‫ޓ‬ೋᦼ࿕ൻ࿯㧦t=tS=10ᣣ‫ޓޓ‬࿕ൻ᧚㧦࠮ࡔࡦ࠻♽ 㜞᦭ᯏ⾰࿯↪
‫࡯࡝࡜ࠬޓޓ‬ᷝട㧦w/c=1.0

3.50

࿑䋹㩷 ࿕ൻ䊏䉾䊃ౝ䈱ᒝᐲ䈱ᷓ䈘ᣇะ䈱ᄌേ㩷ታᣉߒߚቶౝ㈩ว⹜㛎ߦࠃࠅ⺞ߴ‫ޔ‬࿑㧡ߦ␜ߔࠃ߁ߥ৻

ߪ(qu)IS*=706kN/m2 ߦ⸳ቯߒ‫⃻ࠍࠇߎޔ‬႐ߢ㆐ᚑߔࠆߚゲ࿶❗ᒝߐ(qu)IS10㧔࿕ൻ᧚ᷝടᓟ t=10 ᣣ⋡㧕ߣ MC ߩ

߼ߩᷝട㊂ MC=MC*ߪ‫ޔ‬਄ᑼߩ(qu)IS10 ߦ(qu)IS*ࠍ⃻႐㨯㑐ଥࠍ⺞ߴߚ‫(ޕ‬qu)IS10 ߣ MC ߩ㑐ଥߪ⋥✢ቶౝᒝᐲᲧǩFL=1/1.5 ߦࠃࠅഀࠅჇߒߚቶౝ㈩วᒝᐲ

MC=42+0.119㨯(qu)IS10(qu)IS*/ǩFL ࠍઍ౉ߒߡMC*=42㧗0.1197001.5=168kg/m3ߦࠃࠅ߶߷ㄭૃߢ߈ࠆ‫⋡ޕ‬ᮡߣߔࠆ৻ゲ࿶❗ᒝߐ(qu)IS*䋭㪌㪈䋭䊐䉳䉺ᛛⴚ⎇ⓥႎ๔㩷 ╙ 㪋㪍 ภߩࠃ߁ߦ▚ቯߒߚ‫ޕ‬MC*ߦ⋧ᒰߔࠆ᳓࡮࠮ࡔࡦ࠻Ყ

ߦ߅ߌࠆ(qu)IS10 ࠍ㤥Ⴃࠅ⸥ภ㧔‫ع‬ٟ٨ً㧕ߦࠃࠅߘࠇߙ

w/c=1.0 ߩࠬ࡜࡝࡯ࠍࠬ࡜࡝࡯ࡊ࡜ࡦ࠻ߦࠃࠅฦ೉Ფߩࠇ␜ߒߡ޿ࠆ‫ޕ‬ฦ૏⟎ߩ(qu)IS10 ߪ஍ࠅ߇ߥߊ‫⋡ޔ‬ᮡ▸࿐ᠣᜈㅦᐲߦᔕߓߡ DAM ߦଏ⛎ߒߚ‫ߦ࠻࠶ࡇޕ‬ㅍࠆࠬ࡜ౝߦ޽ࠆߎߣ߇ࠊ߆ࠆ‫ޕ‬࡝࡯㊂ VSL ߪ‫࠻࠶ࡇޔ‬ౝߩᷙวᵆ࿯ߩ૕Ⓧ V ߦኻߔࠆ࿕࿑㧥ߦߪ૏⟎ B ߩᷓߐᣇะߩᒝᐲᄌേࠍ␜ߔ‫ޕ‬࿑߆

ൻ᧚⾰㊂ࠍ MC=ǍMC 㨯V‫⾰࡯࡝࡜ࠬޔ‬㊂ࠍ MSL=MC 㨯ࠄ‫ޔ‬࿾⴫㕙ࠍ㒰޿ߡᷓߐᣇะߢߩᒝᐲߪߔߴߡ⋡ᮡᒝᐲ(1+w./c)‫ޔ‬࿕ൻ᧚ኒᐲࠍ C㧔=3.12t/m3㧕‫࡯࡝࡜ࠬޔ‬᳓⾰▸࿐ౝߦ޽ࠆߎߣ߇ࠊ߆ࠆ‫ޕ‬࿾⴫㕙ߢߩᒝᐲ߇߿߿ૐ޿

㊂ࠍ MCW ߣߔࠆߣ‫ޔ‬࿕ൻ᧚ߩ૕Ⓧ VC=MC/C ߣࠬ࡜࡝࡯ߩߪᄖ᳇᷷ᐲߩᓇ㗀㧔ᄖ᳇᷷ᐲߩᄌൻߪ 5㨪17͠ߢ޽ߞ

᳓ߩ૕Ⓧ VCW=MCW/W㧔W㧦᳓ߩኒᐲ㧕߆ࠄ VSL= VC+VCWߚ㧕ߣᕁࠊࠇࠆ‫ޕ‬ߣߥࠆ߆ࠄ
VSL=MC㨯V㨯{1/C+(w/c)/W}§䋶䋮䈍䉒䉍䈮㩷
3=0.16825(1/3.12㧗1.0/1.0)=5.546m

ᧄⓂߢߪ‫࡮⎈ޔ‬ォ࿶⋓࿯Ꮏᴺߦࠃࠅⷙᮨߩᄢ߈޿ࡈࠖ

ߣߥࠆ‫ޕ‬
ᠣᜈㅦᐲߪ 2 ⚵ߩࠬ࡜࡝࡯ࡊ࡜ࡦ࠻ߦࠃࠅ⴫㧝ߦ␜ߔ࡞࠳ࡓߩႇ૕ᡷୃࠍⴕ߁႐วߦ߽ኻᔕߢ߈ࠆᠣᜈ⢻ജ3ࠃ߁ߦࡇ࠶࠻ౝ඙↹ 1 ೉ 25m ߩᠣᜈᤨ㑆ࠍ t=12㨪40 ߣࠍ߽ߟࠃ߁ߦᣂߚߦ㐿⊒ߒߚੑゲ࿁ォဳᠣᜈᷙวᯏ

ߒߡ 125㨪37.5m3/hr.ߩ▸࿐ߢᄌ߃ߚ‫ޕ‬౮⌀㧞ߦߪ DAM

㧔DAM㧕ߩ᭎ⷐߣ‫ߩߘޔ‬ᠣᜈᷙวᕈ⢻ࠍታᣉᎿ࡟ࡌ࡞ߦࠃࠆ࿕ൻ᧚ߩᠣᜈᷙว⁁ᴫࠍ␜ߔ‫ޕ‬ߢታᣉߒߚ⏕⹺⹜㛎⚿ᨐࠍႎ๔ߒߚ‫⹜ޕ‬㛎⚿ᨐߦࠃࠆߣ‫ޔ‬DAM ߦࠃࠅ࿕ൻ᧚ࠍᷝടߒߡ߆ࠄᠣᜈᷙวߩ⚳ੌ⋥ᓟߩ߹ߛ࿕߹ࠄߥ޿⁁ᘒߦ޽ࠆ߁ߜߦ‫ޔ‬ฦ೉ߩࡇ࠶࠻ౝᣂဳᯏߪ㐿⊒⋡ᮡߣߒߚᠣᜈ⢻ജࠍ᦭ߒ‫ޔ‬ᐩᵆ࿯ࠍဋ৻ߦ࿕ൻߢ߈ࠆߎߣ߇⏕⹺ߢ߈ߚ‫ޕ‬ߩ⚂ 50cm ᷓߐߦౝᓘ D=75mm 㐳ߐ H=150mm ߩ⌀㎕⵾DAMߪ⎈࡮ォ࿶⋓࿯Ꮏᴺߩᐩᵆ࿯ߩೋᦼ࿕ൻߩᄢⷙ

ࠪࡦ࠙ࠜ࡯࡞࠴ࡘ࡯ࡉࠍ 4 ୘ၒ⸳ߒ‫ޔ‬⠉ᣣជࠅ಴ߒߡ‫ޔ‬ᮨᣉᎿߦኻᔕߔࠆ⋡⊛ߢ㐿⊒ߐࠇߚ߽ߩߢ޽ࠆ߇‫ޔ‬ᐩᵆ਄࡮ਅ┵㕙ࠍᢛᒻߒߡ‫࡯ࠪ࡞࡯࠾ࡆߦ߁ࠃ޿ߥߒ῎ੇޔ‬࿯ߩ࿕ൻಣℂߛߌߦ㒢ቯߐࠇࠆ߽ߩߢߪߥߊ‫࠴ࡦ࡟࠻ޔ‬࠻ߢ଻⼔ߒߡ⹜㛎ቶߦ଻▤ߒ‫ޔ‬10 ᣣ⋡ߦ৻ゲ࿶❗⹜㛎ࠍࡖ࡯ဳᯏ߇ㆡ↪ߢ߈ࠆ৻⥸ߩ࿾⋚ᡷ⦟Ꮏ੐ߦ߽ㆡ↪ߢታᣉߒߚ‫ޕ‬߈ࠆ߽ߩߢ޽ࠆ‫ޕ‬⹜㛎߆ࠄᓧࠄࠇߚᒝᐲ(qu)IS ߣᠣᜈᤨ㑆 t ߩ㑐ଥࠍ࿑㧢ෳ⠨ᢥ₂ߦ␜ߔ‫ޕ‬࿑ਛߦߪ‫⋡ޔ‬ᮡᒝᐲ(qu)IS*ߣ⃻႐ቶౝᒝᐲᲧǩFL ߦ⋧ᒰߔࠆഀჇߒᒝᐲ(qu)IS*/ǩFL ߩ▸࿐ࠍ␜ߒߡ޽ࠆ‫ޕ‬1) (␠)ㄘᬺㄘ᧛ᢛ஻ᖱႎ✚ว࠮ࡦ࠲࡯㧦ߚ߼ᳰᡷୃᎿ੐ߩ࿑߆ࠄ‫ޔ‬ᠣᜈᤨ㑆߇Ⴧടߔࠆ߶ߤ‫ᦨޔ‬ᄢ࡮ᦨዊߩᒝᐲ▸ല₸ൻ‫ޔ‬㧙⎈㨯ォ࿶⋓࿯Ꮏᴺߦࠃࠆߚ߼ᳰႇ૕ᡷୃ㧙‫ޔ‬࿐߇ዋߥߊߥࠅ‫ޔ‬ᐔဋᒝᐲ߇߿߿Ⴧടߔࠆ௑ะߦ޽ࠆߎߣ‫ޔ‬ᠣᜈㅦᐲ߇ 100m3/hr.એਅߢ޽ࠇ߫ᒝᐲߩ⋡ᮡ▸࿐ౝߦߥࠆࠃ߁ߦೋᦼ࿕ൻߢ߈ࠆߎߣ߇ࠊ߆ࠆ‫ޕ‬⸳⸘࡮ᣉᎿ࡮Ⓧ▚ᜰ㊎(᩺)‫ޔ‬2006㧚2) (␠)ㄘᬺㄘ᧛ᢛ஻ᖱႎ✚ว࠮ࡦ࠲࡯㧦⎈㨯ォ࿶⋓࿯Ꮏᴺߦࠃࠆࡈࠖ࡞࠳ࡓႇ૕ᡷୃ‫ޔ‬㧙ၸⓍ࿯㨯⊒↢࿯ࠍ᦭ല೑↪ߒߚࡈࠖ࡞࠳ࡓߩ࡝࠾ࡘ࡯ࠕ࡞ᛛⴚ㧙‫⸘⸳ޔ‬㨯ᣉᎿ㨯㧞㧕ࡇ࠶࠻ౝߩ࿕ൻᒝᐲߩⓨ㑆⊛ᄌേࡇ࠶࠻ౝߩฦ૏⟎ߢဋ৻ߥೋᦼ࿕ൻ߇ߢ߈ࠆߎߣࠍⓍ▚ᜰ㊎ ᩺ ‫ޔ‬2009㧚⏕⹺ߔࠆߚ߼ߦ‫ޔ‬࿑㧣ߦ␜ߔ᏷ 5m㐳ߐ 16mᷓߐ㩷

2.5m ߩࡇ࠶࠻ౝߢᷙวᵆ࿯ߦ࿕ൻ᧚ࠍ৻ቯߩᠣᜈㅦᐲ㩷㩷

75m3/hr.ߦࠃࠅᷝടᷙวߒ‫࠻࠶ࡇޔ‬ᐔ㕙ౝߩฦ૏⟎ A1㩷

㨪A8 ߣ‫࠻࠶ࡇޔ‬ਛᄩㇱߩ૏⟎ B ߆ࠄ⹜ᢱࠍណขߒߡ䈵 䈫 䈖 䈫 㩷

t=10 ᣣᓟߦ৻ゲ࿶❗⹜㛎ࠍታᣉߒߚ‫ޕ‬ᐔ㕙ౝ૏⟎ A1㨪

㪛㪘㪤 䈲ᧄᩰ⊛䊐䉞䊦䉻䊛䈪䈅䉎ᄢ

A8 ߆ࠄߩଏ⹜૕⹜ᢱߪ‫ߛ߹ޔ‬࿕ൻߒߥ޿߁ߜߦ⚂ 50cmේ䉻䊛䈱ᡷୃᎿ੐䈪ታ㓙䈮૶↪䈚䈩ᷓߐߦၒ⸳ߒߚࠪࡦ࠙ࠜ࡯࡞࠴ࡘ࡯ࡉߦࠃࠅណขߒߚ‫ޕ‬䈍䉍䇮Ꮏ੐䉕ㅢ䈚䈩໧㗴ὐ䉕ᵞ䈇಴䈚߹ߚ‫࠻࠶ࡇޔ‬ਛᄩㇱߩ૏⟎ B ߢߪ߹ߛ࿕߹ࠄߥ޿߁ߜ䈘䉌䈭䉎ᡷ⦟䉕ട䈋䈩ⴕ䈒䈫䈫䉅䈮䋬੹ߦၒ⸳ߒߚႮࡆࡄࠗࡊ US80㧔ᄖᓘǾ80mm2mm㐳ᐕบ㗡䈚䈩䈐䈢㢬䇮ᄢ๺䇮⮮Ꮉ䉌ᣂੱ

ߐ 250mm㧕ߦࠃࠅᷓߐᣇะߩㅪ⛯ଏ⹜૕⹜ᢱࠍណขߒ‫ޔ‬䈱ᚑ㐳䈲ὶ䉌䈝䈮⷗቞䈦䈩ⴕ䈐䈢䈇㐳ߐ 150mm Ფߦಾᢿߒߚ‫ޕ‬䈫ᕁ䈇䉁䈜䇯ർፉ ᣿࿑㧤ߪ⹜㛎⚿ᨐࠍ␜ߒ‫⹜ޔ‬ᢱߩណข૏⟎ A1㨪A4 ߦ߅
ߌࠆ(qu)IS10 ࠍ⊕ᛮ߈⸥ภ㧔‫غ‬٠٤ٌ㧕ߦࠃࠅ‫ޔ‬A5㨪A8䋭㪌㪉䋭