THE VERIFICATION OF LEAKING AND COLLAPSE MECHANISM BY SEEPAGE-ANALYSIS AND MODEL-EXPERIMENT FOR EMBANKMENT

(1)

ሗ࿌ Ἑᕝᢏ⾡ㄽᩥ㞟➨ᕳᖺ᭶

ᾐ㏱ὶゎᯒ࡜ᶍᆺᐇ㦂࡟ࡼࡿᵽ⟶࿘㎶ሐ㜵 ࡢ₃Ỉ࣭㝗ἐⓎ⏕࣓࢝ࢽࢬ࣒ࡢ᳨ド

THE VERIFICATION OF LEAKING AND COLLAPSE MECHANISM BY SEEPAGE-ANALYSIS AND MODEL-EXPERIMENT FOR EMBANKMENT

AROUND SLUICE

ᕝ஭ṇᙪ

¹

࣭▼ཎ㞞つ

²

࣭ྜྷ⏣┤ே

²

࣭ᖹᯘᏛ

²

࣭బࠎᮌဴஓ

²

Masahiko KAWAI, Masanori ISHIHARA, Naoto YOSHIDA, Manabu HIRABAYASHI and Tetsuya SASAKI

1ṇ఍ဨ ᛂ⏝ᆅ㉁ᰴᘧ఍♫๓ᅵᮌ◊✲ᡤ㸦ࠛ331-8688 ᇸ⋢┴ࡉ࠸ࡓࡲᕷ໭༊ᅵ࿅⏫2-61-5㸧 2ṇ఍ဨ ⊂❧⾜ᨻἲேᅵᮌ◊✲ᡤ㸦ࠛ305-8516 Ⲉᇛ┴ࡘࡃࡤᕷ༡ཎ1-6㸧

The damages such as the collapse above sluice and the leaking were occurred at the flood that passed through a half year after an earthquake disaster in the KOZUNAI drainage-sluice which was slight damage by the 2011 great east Japan earthquake. As the result of field work, these damages were caused by the damage of a sealing-plate and the cavity.

The authors carried out the seepage-analysis and the model experiment to verify the damage mechanism on the basis of the result of the field work. The results show that the existing of cavity under the base would outbreak the difference of the water head on both side of sheet-piles. And the function of sheet-pile was spoiled by the difference of water head. Then the flow velocity of cavity was increased and scoured the embankment soil.

Key Words : sluice, seepage analysis, model experiment, leaking, collapse, river embankment

㸯㸬ࡣࡌࡵ࡟

ሐ㜵ᶓ᩿ᵓ㐀≀࡛࠶ࡿᵽ⟶࣭ᵽ㛛࡟ࡘ࠸࡚ࡣ㸪Ἑᕝሐ 㜵࡜ྠ➼ࡢ἞ỈᏳ඲ᗘࡀồࡵࡽࢀࡿ㸬ࡋ࠿ࡋ࡞ࡀࡽ㸪ᇶ

♏ᆅ┙ࡢᅽᐦỿୗ࡞࡝ࡢኚᙧ࡟క࠸ᙧᡂࡉࢀࡓᵽ⟶࣭ᵽ 㛛┤ୗࡢ✵Ὕࡸ࿘㎶ሐ㜵࡟Ⓨ⏕ࡋࡓ⦆ࡳ࡟ࡼࡗ࡚㸪ᒁ㒊

ⓗ࡟⪏㟈ᾐ㏱ᶵ⬟ࡀຎ໬ࡍࡿሙྜࡀ࠶ࡿ㸬

ᮏᩥ࡛ྲྀࡾୖࡆࡿ㬆℩ᕝỈ⣔ྜྷ⏣ᕝྑᓊ13.7km࡟఩⨨

ࡍࡿ୙᮶ෆ᤼Ỉᵽ⟶࡛ࡣ㸪ᖹᡂ23ᖺ࡟Ⓨ⏕ࡋࡓᮾ᪥ᮏ኱

㟈⅏࡟࠾࠸࡚ᵽ⟶ୖୗὶࡢሐ㜵࡟⏒኱࡞⿕ᐖࡣ☜ㄆࡉࢀ

࡞࠿ࡗࡓࡶࡢࡢ㸪㟈⅏ᚋ⣙༙ᖺࢆ⤒ࡓᖹᡂ23ᖺ9᭶ࡢฟ Ỉ࡟ࡼࡾሐෆࡢࡾᑼ௜㏆࡛ࡢ኱つᶍ࡞₃Ỉࡸᵽ⟶┤ୖࡢ ሐ㜵㝗ἐ࡜࠸ࡗࡓኚ≧ࡀⓎ⏕ࡋ㸪ᵽ⟶ࡢᨵ⠏ࢆక࠺኱つ ᶍ࡞᚟ᪧᕤ஦ࡀ⾜ࢃࢀࡿࡇ࡜࡜࡞ࡗࡓ㸬

ࡇࡢ஦౛ࡣ㸪ᵽ⟶࿘㎶ሐ㜵ࡢᶵ⬟పୗࡀᆅ㟈࡟ࡼࡗ࡚

ࡶ⏕ࡌࡿࡇ࡜ࢆ♧၀ࡍࡿ஦㇟࡛࠶ࡾ㸪௒ᚋࡢᆅ㟈ᚋࡢⅬ

᳨ࡸ᚟ᪧᑐᛂ࡟㔜せ࡞▱ぢࢆ୚࠼ࡿࡶࡢ࡜⪃࠼ࡽࢀࡿ㸬 ᮏᩥ࡛ࡣ㸪୙᮶ෆᵽ⟶࡟࠾࠸࡚Ⓨ⏕ࡋࡓ⿕⅏ࡢᴫせࡸ

⌧ᆅㄪᰝ࡛☜ㄆࡉࢀࡓ஦㇟࡟ࡘ࠸࡚⤂௓ࡍࡿ࡜࡜ࡶ࡟㸪

ࡇࢀࡽኚ≧ࡀⓎ⏕ࡋࡓᶵᵓࢆ᳨ドࡍࡿࡓࡵ࡟ᐇ᪋ࡋࡓᾐ

㏱ὶゎᯒ࡜ᶍᆺᐇ㦂ࡢ⤖ᯝ࡟ࡘ࠸࡚ሗ࿌ࡍࡿࡶࡢ࡛࠶ࡿ㸬

㸰㸬୙᮶ෆ᤼Ỉᵽ⟶࡟࠾ࡅࡿ⿕⅏ࡢᴫせ

୙᮶ෆ᤼Ỉᵽ⟶ࡢᴫせ

୙ ᮶ ෆ ᤼ Ỉ ᵽ ⟶ ࡣ 㸪1970ᖺ ࡟ ᏶ ᡂ ࡋ ࡓ 㗰 ⟶ ᮺ 㸦ĳ457.2mm㸪L=17m㸧ᨭᣢࡢᵽ⟶㸦RC㐀㸧࡛࠶ࡿ㸬఩

⨨ࢆᅗ-1࡟♧ࡍ㸬

୙᮶ෆ᤼Ỉᵽ⟶

ྜྷ⏣ᕝ

ᡂ℩ᕝ

ᅗ ୙᮶ෆ᤼Ỉᵽ⟶ࡢ఩⨨ᅗ㸦ᆅ⌮㝔ᆅᅗࡼࡾ㸧

(2)

୙᮶ෆ᤼Ỉᵽ⟶఩⨨ࡢᶓ᩿ᅗࢆᅗ-2࡟♧ࡋࡓࡀ㸪ᵽ⟶

ࡢ┤ୗ࡟ࡣ㹌್㸰㹼㸯㸰⛬ᗘࡢ⦆࠸◁ᒙࡀᒙཌ10m⛬ᗘ

࡜ཌࡃศᕸࡋ㸪ࡑࡢୗ఩࡟㹌್㸱㹼㸴ࡢࡸࡸ◳㉁࡞⢓ᛶ ᅵᒙࡀ2㹼3m⛬ᗘࡢᒙཌ࡛ศᕸࡋ࡚࠾ࡾ㸪ᇶ♏ᮺࡣ⢓ᛶ ᅵୗ఩ࡢ⥾ࡲࡗࡓ◁ᒙࢆᨭᣢᒙ࡜ࡋ࡚࠸ࡿ㸬

ᅗ ୙᮶ෆ᤼Ỉᵽ⟶ࡢ᩿㠃ᅗ

ᮾ᪥ᮏ኱㟈⅏࡟ࡼࡿ⿕⅏ࡢᴫせ

ᖹᡂ23ᖺ3᭶11᪥࡟Ⓨ⏕ࡋࡓᮾ᪥ᮏ኱㟈⅏࡟ࡼࡾ㸪୙

᮶ෆ᤼Ỉᵽ⟶ࡢ఩⨨ࡍࡿ㬆℩ᕝỈ⣔ྜྷ⏣ᕝࡢἙᕝሐ㜵࡟

࠾࠸࡚ࡣ㛤ཱྀࢆక࠺⦪᩿ட⿣ࡸᩘm࡟ཬࡪሐ㜵ኳ➃ࡢỿ

ୗ࡜࠸ࡗࡓ⏒኱࡞⿕⅏ࡀ☜ㄆ¹⁾ࡉࢀ࡚࠸ࡿࡀ㸪ᆅ㟈ᚋ࡟

ᐇ᪋ࡉࢀࡓ୙᮶ෆ᤼Ỉᵽ⟶ࡢእほほᐹ࡛ࡣ㸪ㆤᓊ࡟㛤ཱྀ

ᖜ9cm⛬ᗘࡢட⿣ࡀ☜ㄆࡉࢀࡓ⛬ᗘ࡛࠶ࡾ㸪⏒኱࡞⿕ᐖ ࡣ☜ㄆࡉࢀ࡚࠸࡞࠸㸬

୍᪉㸪ᆅ㟈ᚋ࡟ᐇ᪋ࡉࢀࡓᵽ⟶ෆ㒊ࡢⅬ᳨࡛ࡣ㸪ᅗ-3

࡟♧ࡍࡼ࠺࡟⥅ᡭࡢ㛤ࡁࡸ⥅ᡭ࡟タ⨨ࡉࢀࡓṆỈᯈࡢ◚

ᦆࡀ☜ㄆࡉࢀࡓ.

ᅗ ภෆⅬ᳨࡛☜ㄆࡉࢀࡓ⥅ᡭࡢ㛤ࡁ࡜ṆỈᯈࡢ◚ᦆ 㸦ᮾ໭ᆅ᪉ᩚഛᒁᥦ౪㸧

ฟỈࡢᴫせ

ᮾ᪥ᮏ኱㟈⅏࠿ࡽ࠾ࡼࡑ༙ᖺࢆ⤒ࡓ2011ᖺ9᭶21᪥14

᫬㡭࡟㟼ᒸ┴὾ᯇ࡟ୖ㝣ࡋࡓྎ㢼15ྕࡣ㠀ᖖ࡟ᙉ࠸ໃຊ

ࢆ⥔ᣢࡋࡓࡲࡲ㛵ᮾ࠿ࡽᮾ໭ᆅ᪉ࢆ⦪᩿ࡍࡿࡼ࠺࡟໭ᮾ

࡟㐍ࡳ㸪⩣22᪥ᮍ᫂࡟୕㝣Ἀ࡟㐩ࡋࡓ㸬ࡇࡢྎ㢼ࡢ໭ୖ

࡟క࠸㸪๓⥺ࡢάືࡀάⓎ໬ࡋ㸪ᐑᇛ┴࡛ࡣ㝆ࡾጞࡵ

㸦20᪥0᫬㸧࠿ࡽࡢ⥲㞵㔞ࡣ▼ᕳᕷ㞝຾࡛532.5mm㸪ዪ

ᕝ࡛452.5mmࢆほ ࡍࡿ࡞࡝グ㘓ⓗ࡞኱㞵࡜࡞ࡗࡓ㸬

ࡇࡢ኱㞵࡟ࡼࡾ㸪㬆℩ᕝỈ⣔ྜྷ⏣ᕝ㸦኱࿴⏫࣭ⴠྜỈ

఩ほ ᡤ㸧࡛ࡣ㸪ࡣࢇ℃༴㝤Ỉ఩ࢆ㉸࠼ほ ྐୖ㸱␒┠

ࡢὥỈ࡜࡞ࡗࡓ㸬ࡇࡢฟỈ࡟ࡼࡾ㸪ሐ㜵Ỵቯ࡞࡝ࡢ⏒኱

࡞⿕ᐖࡢⓎ⏕࡟ࡣ⮳ࡽ࡞࠿ࡗࡓࡶࡢࡢ㸪㬆℩ᕝ࣭ྜྷ⏣ᕝ

ࡢἙᕝሐ㜵࡟࠾࠸࡚24࠿ᡤࡢ⿕⅏ࡀⓎ⏕ࡋࡓ²⁾㸬

୍᪉㸪୙᮶ෆ᤼Ỉᵽ⟶㏆ഐࡢᖭ㇂ほ ᡤ࡛ࡣ㸪ᅗ-4࡟

♧ ࡍ ࡼ ࠺ ࡟1978ᖺ ࡢ ほ㛤 ጞ ௨ 㝆 ᭱ ࡶ 㧗 ࠸ Ỉ ఩ 㸦TP+8.19m㸧ࢆグ㘓ࡋࡓ㸦ィ⏬㧗Ỉ఩ࡣTP+8.97m㸧㸬

0 1 2 3 4 5 6 7 8 9 10

0:00 0:00 0:00 0:00 0:00 0:00 0:00 0:00

ἙᕝỈ఩(m)

ἙᕝỈ఩䠄᧛㇂䠅 0

20 40

60

㝆㞵㔞(mm)

㝆㞵䠄㮵ᓥྎ䠅

2011/9/20 2011/9/21 2011/9/22 2011/9/23 2011/9/24 2011/9/25 2011/9/26 ᅗ ྜྷ⏣ᕝᖭ㇂ほ ᡤ࡟࠾ࡅࡿἙᕝỈ఩ࡢኚື

ฟỈ᫬ࡢ⿕⅏ᴫせ

ୖ㏙ࡢฟỈ࡟క࠸୙᮶ෆ᤼Ỉᵽ⟶࿘㎶࡛ࡣྤฟỈᵴ⬥

ࡸሐෆഃࡢࡾᑼ௜㏆࠿ࡽࡢ⃭ࡋ࠸₃ỈࡀⓎ⏕㸦ᅗ-5㸧ࡍ

ࡿ࡜࡜ࡶ࡟㸪ሐෆഃࡢࡾ⫪ཬࡧྤฟỈᵴ⬥࡟࠾࠸࡚኱つ ᶍ࡞㝗ἐࡀⓎ⏕ࡋࡓ㸦ᅗ-6ཬࡧᅗ-7㸧㸬

ᅗ ྤฟỈᵴ⬥࠿ࡽࡢ₃ỈࡢᵝᏊ㸦ᮾ໭ᆅ᪉ᩚഛᒁᥦ౪㸧

ᅗ ྤฟỈᵴ⬥ࡢ㝗ἐᏍ㸦ᮾ໭ᆅ᪉ᩚഛᒁᥦ౪㸧

(3)

ᅗ ሐෆഃࡢࡾ⫪ࡢ㝗ἐᏍ㸦ᮾ໭ᆅ᪉ᩚഛᒁᥦ౪㸧

㛤๐ㄪᰝ࡟ࡼࡾ☜ㄆࡉࢀࡓ஦㡯

㝗ἐᏍࡢⓎ⏕ࢆཷࡅ㸪₃Ỉ࣭㝗ἐࡢⓎ⏕࣓࢝ࢽࢬ࣒ࢆ

ゎ᫂ࡍࡿࡓࡵሐ㜵㛤๐ㄪᰝࡀᐇ᪋ࡉࢀࡓ㸬㛤๐ㄪᰝ⤖ᯝ

࡟ࡼࡿ࡜㸪ሐෆഃࡢࡾ⫪࡟Ⓨ⏕ࡋࡓ㝗ἐᏍࡣᅗ-8࡟♧ࡋ ࡓࡼ࠺࡟ᵽ⟶ࡢ࢘ࢼࢠṆࡵࡢ࡯ࡰ┤ୖ࡟࠶ࡓࡾ㸪㝗ἐⓎ

⏕ᚋ࡟ᢞධࡉࢀࡓ᚟ᪧᅵ◁㸦B1ᒙ㸧ࡀ࢘ࢼࢠṆࡵࡲ࡛

㐃⥆ࡋ࡚࠸ࡿࡇ࡜ࡀ☜ㄆࡉࢀࡓ㸬

ᅗ ሐෆഃࡢࡾ⫪㝗ἐᏍ࠿ࡽ㐃⥆ࡍࡿ᚟ᪧᅵ◁ࡢ≧ἣ

୍᪉㸪ᵽ⟶ࡢᗋ∧ୗ࡟╔┠ࡍࡿ࡜ᅗ-9࡟♧ࡍࡼ࠺࡟㛤 ๐ㄪᰝ๓࡟✵Ὕ࣭ட⿣ࡢ඘ሸࢆ┠ⓗ࡟ὀධࡉࢀࡓཌࡉ FP࡟㐩ࡍࡿࢢࣛ࢘ࢺᮦࡀ☜ㄆࡉࢀ࡚࠾ࡾ㸪ᗋ∧ୗ࡟኱

つᶍ࡞✵Ὕࡀᙧᡂࡉࢀ࡚࠸ࡓࡇ࡜ࡀࢃ࠿ࡿ㸬

ᗋ∧

ࢢࣛ࢘ࢺᮦ

ᅗ ᗋ∧ୗ࡛☜ㄆࡉࢀࡓࢢࣛ࢘ࢺᮦ

ࡲࡓ㸪࢘ࢼࢠṆࡵ┤ୗࡢṆỈ▮ᯈ࡛ࡣ㸪ᅗ-10࡟♧ࡍ

ࡼ࠺࡟▮ᯈ➃㒊ࢆᅇࡾ㎸ࡴࡼ࠺࡟ࢢࣛ࢘ࢺᮦࡀὀධࡉࢀ

࡚࠾ࡾ㸪ᗋ∧ୗࡢ✵Ὕࡀࡇࢀࡽ▮ᯈࡢഃ᪉ࢆ⤒⏤ࡋ࡚ᅇ

ࡾ㎸ࢇ࡛㐃⥆ࡋ࡚࠸ࡓྍ⬟ᛶࢆ♧၀ࡋ࡚࠸ࡿ㸬

ᅗ ࢘ࢼࢠṆࡵ┤ୗࡢṆỈ▮ᯈࢆᅇࡾ㎸ࢇ࡛ὀධࡉࢀ࡚

࠸ࡿࢢࣛ࢘ࢺᮦ㸦ᮾ໭ᆅ᪉ᩚഛᒁᥦ౪㸧

࡞࠾㸪㛤ཱྀཬࡧṆỈᯈࡢ◚᩿ࡀ☜ㄆࡉࢀࡓ⥅ᡭ㒊࡟࠾

࠸࡚ࡣ㸪⥅ᡭࢆそ࠺࣮࢝ࣛࡀሐෆഃ࡟12cm⛬ᗘࡎࢀ࡚

࠸ࡿ࡜࡜ࡶ࡟㸪ภయ࡜࣮࢝ࣛࡢ᥋ゐ㒊ศࡀ㓟໬ࡋ࡚࠾ࡾ㸪

⥅ᡭ࠿ࡽࡢ₃Ỉࡀ㢧ⴭ࡛࠶ࡗࡓࡇ࡜ࢆ࠺࠿ࡀࢃࡏ࡚࠸ࡓ㸬

㸱㸬ᾐ㏱ὶゎᯒ࡟ࡼࡿ⿕⅏ࡢ᳨ド

㛤๐ㄪᰝࡢ⤖ᯝࡼࡾ㸪₃Ỉ࣭㝗ἐⓎ⏕࡟ࡣ

ձ ⥅ᡭ㛤ࡁ࣭ṆỈᯈ◚ᦆ࡟ࡼࡿᵽ⟶ෆ㒊࠿ࡽࡢ₃Ỉ ղ ᗋ∧ୗࡢ✵Ὕᙧᡂ

ճ ▮ᯈࢆᅇࡾ㎸ࢇࡔỈ࣑ࢳࡢᙧᡂ

ࡢ㸱ࡘࡢせᅉࡀ㛵୚ࡋ࡚࠸ࡿࡶࡢ࡜᥎ᐃࡉࢀࡓ㸬ࡑࡇ࡛㸪 ṆỈᯈࡢ◚ᦆࢆ⪃៖ࡋࡓ᩿㠃஧ḟඖᾐ㏱ὶゎᯒ࡟ࡼࡗ࡚

✵Ὕࡢ᭷↓ࡸ▮ᯈᅇࡾ㎸ࡳࡢ᭷↓࡟ࡼࡿỈ㢌ศᕸࡢ㐪࠸

ࢆ᳨ドࡋࡓ㸬

ゎᯒࣔࢹࣝ࡜ቃ⏺᮲௳

ゎᯒࡣᅗ-11࡟♧ࡍࡼ࠺࡟㸪ᵽ⟶ࢆ㏻ࡿሐ㜵ᶓ᩿㠃ࢆ

ࣔࢹࣝ໬ࡋࡓ

ᅗ ୙᮶ෆ᤼Ỉᵽ⟶࡟࠾ࡅࡿᾐ㏱ὶゎᯒࣔࢹࣝᅗ

ᆅ┙࠾ࡼࡧ▮ᯈࡢ㏱Ỉಀᩘࡣ㸪ᅗ-11୰࡟♧ࡍ࡜࠾ࡾ

࡛࠶ࡿ㸬ᅵࡢ୙㣬࿴≉ᛶࡣᡭᘬࡁ^㸧࡟ᇶ࡙ࡁタᐃࡋࡓ㸬

ᕝ⾲ ᕝ⿬

㝗ἐᏍ

(4)

ࡲࡓ㸪ቃ⏺᮲௳࡜ࡋ࡚ࡣṆỈᯈࡢ◚᩿ࡋ࡚࠸ࡓ㛛ᰕ㒊 ཬࡧ⥅ᡭ㒊࡟እỈ఩ࡢኚືࢆ୚࠼ࡿ࡜࡜ࡶ࡟㸪ሐෆഃࡣ ቃ⏺᮲௳ࡢᙳ㡪ࢆཷࡅ࡟ࡃ࠸ࡼ࠺࡟࡛ࡁࡿࡔࡅ㐲᪉ࡲ࡛

ࣔࢹࣝࢆᣑ኱ࡋ㸪ᆅ⾲㠃௜㏆࡟Ỉ఩ࢆタᐃࡋࡓ㸬

࡞࠾㸪ゎᯒࢣ࣮ࢫࡣ⾲-1࡟♧ࡍ㸴ࢣ࣮ࢫ࡛࠶ࡾ㸪ᗋ∧

ୗࡸྤฟỈᵴ⬥࡞࡝࡟✵Ὕࢆタᐃࡍࡿ࡜࡜ࡶ࡟㸪▮ᯈ㢌㒊࡟✵Ὕ࡜ྠ➼ࡢ㏱Ỉಀᩘࢆ୚࠼ࡿࡇ࡜࡛▮ᯈ㢌㒊ࡢᅇ

ࡾ㎸ࡳࢆ⪃៖ࡍࡿࡇ࡜࡜ࡋࡓ㸬

⾲ ᾐ㏱ὶゎᯒࢣ࣮ࢫࡢ᮲௳୍ぴ ࢣ࣮ࢫ ⥅ᡭ

◚ᦆ

✵ Ὕ ▮ᯈᅇ

ᗋ∧ୗ ྤฟỈ ࡾ㎸ࡳ

ᵴ⬥ ࡢࡾᑼ

$ ᭷ ↓ ↓ ↓ ↓

% ᭷ ᭷ ↓ ↓ ↓

& ᭷ ᭷ ᭷ ↓ ↓

' ᭷ ᭷ ᭷ ↓ ᭷

( ᭷ ᭷ ᭷ ᭷ ↓

) ᭷ ᭷ ᭷ ᭷ ᭷

ͤ✵Ὕࢆ⪃៖ࡍࡿሙྜ࡟ࡣᙜヱ㒊࡟1×10^-2m/secࢆタᐃࡋࡓ

ゎᯒ⤖ᯝ

ᾐ㏱ὶゎᯒ࡟ࡼࡗ࡚ᚓࡽࢀࡿᅽຊỈ㢌ࡢศᕸࢆ⾲-2࡟

♧ࡋࡓ㸬

⾲ ᾐ㏱ὶゎᯒ࡟ࡼࡿᅽຊỈ㢌ࡢศᕸ㸦እỈ఩ࣆ࣮ࢡ1᫬㛫 ๓ࡢ594hrࢆᢳฟ㸧

ゎ ᯒ ࢣ࣮ࢫ

ᅽຊỈ㢌ࡢศᕸ 㸦594hr㸸2011/9/22 3:00㸧

$

%

&

'

(

)

ࡇࢀࡽゎᯒ⤖ᯝࡼࡾ㸪௨ୗࡢࡇ࡜ࡀ᫂ࡽ࠿࡜࡞ࡗࡓ㸬

࣭ ࢣ࣮ࢫA࡜ࢣ࣮ࢫBࢆẚ㍑ࡍࡿ࡜㸪✵Ὕࡀ࠶ࡿ

ࢣ࣮ࢫ B ࡛ࡣᕝ⿬ഃᑠẁ┤ୗ࡛Ỉ㢌ࡀ㧗ࡃ࡞ࡗ

࡚࠸ࡿ㸬

࣭ ࢣ࣮ࢫBཬࡧࢣ࣮ࢫCࡼࡾ㸪ᗋ∧ୗࡢ✵Ὕ࡜ྤ

ฟỈᵴ⬥ࡢ✵Ὕࡀ㐃⥆ࡍࡿ࡜㸪✵Ὕ㒊࡛Ỉ㢌ࡀ 㧗ࡃ࡞ࡾୖ࡟ฝࡢᙧ≧࡜࡞ࡿ㸬

࣭ ࢣ࣮ࢫCཬࡧࢣ࣮ࢫDࡼࡾ㸪▮ᯈ㢌㒊ࡢ㐽Ỉᛶ ࡀᦆ࡞ࢃࢀࡿ࡜㸪ྤฟỈᵴ⬥ࡢ✵Ὕ࡛Ⓨ⏕ࡍࡿ

Ỉ㢌್ࡣࡼࡾ㧗ࡃ࡞ࡾ㸪ᆅ⾲㠃ࢆ㉺࠼࡚ᄇࡁฟ ࡍ≧ἣ࡜࡞ࡿ㸬

࣭ ࢣ࣮ࢫEཬࡧࢣ࣮ࢫ Fࡼࡾ㸪✵Ὕࡀሐෆഃࡲ࡛

㐃⥆ࡋࡓ≧ែ࡛▮ᯈࡢᶵ⬟ࡀ႙ኻࡍࡿ࡜ྤฟỈ ᵴ⬥✵ὝࡢỈ㢌ࡀ㧗ࡃ࡞ࡿ࡜࡜ࡶ࡟ࡢࡾᑼ㒊ࡢ Ỉ㢌ࡀ㧗ࡃ࡞ࡿ㸬

ゎᯒ⤖ᯝࡢ⪃ᐹ

ᾐ㏱ὶゎᯒ⤖ᯝࢆࡶ࡜࡟㸪▮ᯈ㢌㒊ࡢᅇࡾ㎸ࡳࢆ⪃៖

ࡋ࡚࠸࡞࠸ࢣ࣮ࢫA,B,C,E࡟࠾ࡅࡿ▮ᯈࢆᣳࢇࡔᅽຊỈ 㢌ᕪࢆᅗ-12㹼ᅗ-14࡟♧ࡋࡓ㸬

ᅗ ᕝ⾲▮ᯈࢆᣳࡴᅽຊỈ㢌ᕪࡢኚ໬

ᅗ ࢘ࢼࢠṆࡵ┤ୗࡢ▮ᯈࢆᣳࡴᅽຊỈ㢌ᕪࡢኚ໬

Ў594hr

(5)

ᅗ ᕝ⿬▮ᯈࢆᣳࡴᅽຊỈ㢌ࡢኚ໬

ᅗ࡟ࡼࡿ࡜㸪ᕝ⾲▮ᯈ࡛ࡣ✵Ὕࡢ↓࠸ࢣ࣮ࢫA࡛2.5m

⛬ᗘ㸪✵Ὕࡀ࠶ࡿࢣ࣮ࢫB,C,E࡛1.8mࡢᅽຊỈ㢌ᕪࡀⓎ

⏕ࡋ࡚࠾ࡾ㸪㛛ᰕ㒊ࡢṆỈᯈࡀ◚᩿ࡋࡓࡇ࡜࡛㸪ᕝ⾲▮

ᯈ㢌㒊࡟እỈ఩ࡢỈᅽࡀ┤᥋ⓗ࡟స⏝ࡋ㸪኱ࡁ࡞ᅽຊỈ 㢌ᕪࡀᖖ࡟⏕ࡌࡿࡇ࡜ࢆ♧ࡋ࡚࠸ࡿ㸬୍᪉㸪࢘ࢼࢠṆࡵ

┤ୗࡢ▮ᯈ࡛ࡣ✵Ὕࡀ↓࠸ࢣ࣮ࢫA࡟ẚ࡭㸪✵Ὕࡀ࠶ࡿ

ࢣ࣮ࢫB,C,E࡛኱ࡁ࡞ᅽຊỈ㢌ᕪࡀ⏕ࡌ࡚࠾ࡾ㸪✵Ὕࡢ

Ꮡᅾ࡟ࡼࡾ▮ᯈ㢌㒊࡬ࡢ㈇Ⲵࡀ኱ࡁࡃ࡞ࡿࡇ࡜ࢆ♧ࡋ࡚

࠸ࡿ㸬ࡲࡓ㸪ᕝ⿬▮ᯈ࡛ࡣ✵Ὕࡀᙧᡂࡉࢀࡓሙྜ㸦ࢣ࣮

ࢫB,C㸧࡟4mࡢᅽຊỈ㢌ᕪ㸪⿬ࡢࡾᑼࡲ࡛✵ὝࡀⓎ㐩㸦ࢣ࣮ࢫE㸧ࡍࡿ࡜5.7mࡶࡢᅽຊỈ㢌ᕪࡀ⏕ࡌࡿ⤖ᯝ࡜

࡞ࡗ࡚࠾ࡾ㸪✵ὝࡀᏑᅾࡍࡿࡇ࡜࡛▮ᯈࡢṆỈᛶࢆಖᣢ ࡍࡿࡇ࡜ࡀ㞴ࡋࡃ࡞ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬

୍᪉㸪ྤฟỈᵴ⬥࡟Ⓨ⏕ࡍࡿὶ㏿࡟╔┠ࡍࡿ࡜㸪ᅗ- 15࡟♧ࡍࡼ࠺࡟㸪▮ᯈࡢṆỈᶵ⬟႙ኻࢆ᝿ᐃࡋࡓࢣ࣮ࢫ 'ཬࡧࢣ࣮ࢫ)࡟࠾ࡅࡿὶ㏿ࡀ௚ࢣ࣮ࢫࡢᩘಸ㏿ࡃ㸪ࡲࡓ㸪 ࡢࡾᑼࡲ࡛✵Ὕࡀᙧᡂࡉࢀࡓ࡜௬ᐃࡋࡓࢣ࣮ࢫ)ࡢὶ㏿

ࡀࢣ࣮ࢫ'ࡢ㸰ಸ௨ୖ㏿࠸ゎᯒ⤖ᯝࡀᚓࡽࢀࡓ㸬

ᅗ ᾐ㏱ὶゎᯒ࡟ࡼࡗ࡚ᚓࡽࢀࡓྤฟỈᵴ⬥࡟Ⓨ⏕ࡍࡿὶ

㏿ࡢ᫬㛫ኚ໬

㸲㸬ᶍᆺᐇ㦂࡟ࡼࡿỈ㢌ᕪⓎ⏕ࡢ᳨ド

ᾐ㏱ὶゎᯒ࡟ࡼࡾ㸪▮ᯈࢆᣳࡴỈ㢌ᕪ࡟ࡼࡾ▮ᯈࡢṆ Ỉᶵ⬟ࡀᦆ࡞ࢃࢀࡓ⤖ᯝ㸪✵Ὕෆ࡟኱ࡁ࡞ὶ㏿ࡀⓎ⏕ࡋ㸪

ሐయᅵ◁ࢆ౵㣗࣭㐠ᦙࡍࡿࡇ࡜࡟ࡼࡾ㝗ἐࡀⓎ⏕ࡋࡓࡶ

ࡢ࡜⪃࠼ࡽࢀࡓ㸬ࡑࡇ࡛㸪ᶍᆺᐇ㦂࡟ࡼࡗ࡚▮ᯈ๓ᚋࡢ Ỉ㢌ᕪࡢⓎ⏕ࢆ෌⌧ࡍࡿࡇ࡜࡜ࡋࡓ㸬

ᶍᆺᐇ㦂ࡢ⿦⨨࡜እຊ

ᐇ㦂ᶍᆺࡣ㸪୙᮶ෆ᤼Ỉᵽ⟶ᐇ≀ࡢ1/20ࡢ⦰ᑻᶍᆺ࡜

ࡋ࡚㸪㧗ࡉ1,200mm㸪ᖜ1,000mm㸪㛗ࡉ4,000mmࡢᅵᵴ ࡢ୰࡟స〇ࡋ㸪ᇶ♏ᆅ┙ࡢ㧗ࡉࢆ350mm㸪ሐయᆅ┙ࡢ㧗 ࡉࢆ500mm࡜ࡋ㸪ᵽ⟶ࡢภయࡢ኱ࡁࡉࢆ150150mm࡜ ࡋࡓ㸬ᵽ⟶ࡢᵓ㐀ࡣ㸪㝗ἐࡀⓎ⏕ࡋࡓሐయ୰ኸ㸦࢘ࢼࢠ Ṇࡵ௜㏆㸧࠿ࡽᕝ⿬ഃࡢ㒊ศࢆ෌⌧ࡍࡿࡇ࡜࡜ࡋ㸪⤥Ỉ ᵴഃࡼࡾ࢘ࢼࢠṆࡵࢆྵࡴṆỈ▮ᯈ࡜࣮࢝ࣛ௜ࡁࡢ⥅ᡭ 㒊㸪ᕝ⿬ഃ࡟ภయᗏ㠃ࡢࡳࡢṆỈ▮ᯈࢆྵࡴࡶࡢ࡜࡞ࡗ

࡚࠸ࡿ㸬࡞࠾㸪ภయཬࡧṆỈ▮ᯈࡣ㸪ཌࡉ15mmࡢᮌᮦ

ཬࡧ࢔ࢡࣜࣝࢆ⏝࠸࡚స〇ࡋࡓ.

༢఩㸸mm ᅗ ᐇ㦂ᶍᆺࡢᙧ≧

ᐇ㦂࡟⏝࠸ࡓእຊࡣ㸪㝗ἐࡀⓎ⏕ࡋࡓᖹᡂ23ᖺ9᭶ฟ Ỉ᫬ࡢἙᕝỈ఩ࢆࡶ࡜࡟ᅗ-17࡟♧ࡍእຊࢆ┠ᶆ࡜ࡋ࡚

Ỉ఩ࢆไᚚࡋࡓ㸬

ᅗ ᶍᆺᐇ㦂ࡢỈ఩እຊ Ў594hr

Ќ

4hr10min

Ў594hr

(6)

࡞࠾㸪ᐇ㦂ࡣ௨ୗࡢ㸱ࢣ࣮ࢫ࡟ࡘ࠸࡚ᐇ᪋ࡋࡓ㸬 ࢣ࣮ࢫ㸯㸸ᗋ∧ୗࡢ✵Ὕཬࡧ⥅ᡭࡢ㛤ࡁࡀ↓࠸≧

ែ

ࢣ࣮ࢫ㸰㸸ᗋ∧ୗࡢ✵Ὕཬࡧ⥅ᡭࡢ㛤ࡁࡀ࠶ࡿ≧

ែ࡛㸪ᕝ⿬▮ᯈࡢṆỈᶵ⬟ࡀ࠶ࡿሙྜ

ࢣ࣮ࢫ㸱㸸㸰࡜ྠᵝࡢ᮲௳࡛ᕝ⿬ഃࡢ▮ᯈࡀṆỈ ᶵ⬟ࢆ႙ኻࡋࡓሙྜ

ᶍᆺᐇ㦂ࡢ⤖ᯝ

ᐇ㦂࡟ࡼࡗ࡚ᚓࡽࢀࡓ࣐ࣀ࣓࣮ࢱࡢỈ㢌್ࢆࡶ࡜࡟㸪

࢘ࢼࢠṆࡵ┤ୗࡢ▮ᯈ࣭ᕝ⿬ഃࡢ▮ᯈࢆᣳࡴỈ㢌ᕪ࡟╔

┠ࡋ࡚ᩚ⌮ࡍࡿ࡜ᅗ-18ཬࡧᅗ-19࡟♧ࡍ࡜࠾ࡾ࡛࠶ࡿ㸬 ࡇࢀࡽࡢᅗ࡟ࡼࡿ࡜,࢘ࢼࢠṆࡵ┤ୗࡢ▮ᯈࢆᣳࡴỈ 㢌್ࡣ೺඲࡞≧ែ㸦ࢣ࣮ࢫ㸯㸧࡟࠾࠸࡚ࡶ᭱኱4.5cm⛬ ᗘࡢỈ㢌ࡀస⏝ࡍࡿࡀ㸪ࢣ࣮ࢫ㸰㸦✵Ὕ࣭⥅ᡭࡢ㛤ࡁࡀ

᭷ࡾ㸪࠿ࡘ㸪ᕝ⿬ഃࡢ▮ᯈࡀ೺඲࡞ሙྜ㸧࡟ࡣ⥅ᡭ㒊࠿

ࡽࡢ₃Ỉࡢᅽຊࡀᕝ⿬▮ᯈ࡛㐽᩿ࡉࢀ㸪࢘ࢼࢠṆࡵ┤ୗ

ࡢ▮ᯈࡢ⫼ᚋ࡟స⏝ࡍࡿࡓࡵᴟ➃࡞Ỉ㢌ᕪࢆ⏕ࡌ࡞࠸㸬

୍᪉㸪ࢣ࣮ࢫ㸱㸦ᕝ⿬▮ᯈࡢᶵ⬟ࡀ႙ኻࡋࡓሙྜ㸧࡟ࡣ

᭱኱5cm௨ୖࡢỈ㢌ᕪࡀⓎ⏕ࡍࡿࡇ࡜࡜࡞ࡿ㸬

ᅗ ᐇ㦂ࢣ࣮ࢫẖࡢ࢘ࢼࢠṆࡵ┤ୗࡢ▮ᯈࢆᣳࡴỈ㢌ᕪ

ࡲࡓ㸪ᕝ⿬▮ᯈࢆᣳࡴỈ㢌ᕪ࡛ࡣ㸪ᅗ-19࡟♧ࡍࡼ࠺

࡟ࢣ࣮ࢫ㸰࡟࠾࠸࡚᭱኱6cm௨ୖࡢỈ㢌ᕪࡀⓎ⏕ࡋ࡚࠸

ࡿࡢ࡟ẚ࡭㸪࡯࠿ࡢࢣ࣮ࢫ࡛ࡢỈ㢌ᕪࡣ༙ศ௨ୗ࡛࠶ࡿ㸬

ᅗ ᐇ㦂ࢣ࣮ࢫẖࡢᕝ⿬ഃࡢ▮ᯈࢆᣳࡴỈ㢌ᕪ

௨ୖࡢᐇ㦂⤖ᯝ࠿ࡽ㸪୙᮶ෆ᤼Ỉᵽ⟶࡛ࡣ㸪ᗋ∧ୗࡢ

✵Ὕཬࡧ⥅ᡭࡢ㛤ࡁࡀᙧᡂࡉࢀࡿࡇ࡜࡟ࡼࡗ࡚㸪ࡲࡎ㸪 ᕝ⿬▮ᯈ࡟኱ࡁ࡞Ỉ㢌ᕪࡀస⏝ࡋࡓ⤖ᯝ㸪ࡑࡢṆỈᶵ⬟

ࢆ႙ኻࡋ㸪ḟ࠸࡛࢘ࢼࢠṆࡵ┤ୗࡢ▮ᯈ࡟኱ࡁ࡞Ỉ㢌ᕪ ࡀస⏝ࡋࡓ⤖ᯝ㸪ṆỈᶵ⬟ࡢ႙ኻ࡟⮳ࡗࡓࡶࡢ࡜⪃࠼ࡽ

ࢀࡿ㸬

㸳㸬⤖ㄽ

ࡇࢀࡲ࡛㏙࡭࡚ࡁࡓᾐ㏱ὶゎᯒཬࡧᶍᆺᐇ㦂ࡢ⤖ᯝࡼ

ࡾᙜヱᵽ⟶࿘㎶ࡢ⿕⅏ࡣ௨ୗࡢ࣓࢝ࢽࢬ࣒࡟ࡼࡾⓎ⏕

ࡋࡓࡶࡢ࡜⪃࠼ࡽࢀࡿ㸬

Ǳ ୙᮶ෆ᤼Ỉᵽ⟶࡛ࡣ㸪⥅ᡭࡢ㛤ࡁ㸦ṆỈᯈࡢ◚

ᦆ㸧࡜ᗋ∧ୗࡢ✵ὝࡢᏑᅾ࡟ࡼࡾ㸪ࡲࡎ㸪ᕝ⿬ഃ

ࡢ▮ᯈ࡟኱ࡁ࡞Ỉ㢌ᕪࡀస⏝ࡋ㸪ࡇࡢᶵ⬟ࡀ႙ኻ ࡋࡓྍ⬟ᛶࡀ㧗࠸㸬

Ǳ ࡇࢀ࡟క࠸㸪ᕝ⾲ഃࡢ▮ᯈ࡟స⏝ࡍࡿỈ㢌ᕪࡶቑ

኱ࡋ㸪▮ᯈࢆᅇࡾ㎸ࡴὶࢀࡀᙧᡂࡉࢀࡿ࡞࡝㸪ࡑ ࡢᶵ⬟ࡀኻࢃࢀࡓ㸬

Ǳ ▮ᯈࡢṆỈᶵ⬟ࡀ႙ኻࡋࡓ⤖ᯝ㸪✵Ὕෆ࡟Ⓨ⏕ࡍ

ࡿὶ㏿ࡀቑ኱ࡋ㸪࿘㎶ࡢᅵ◁㸦ሐయᅵ㸧ࢆὙ᥀ࡋ

኱つᶍ࡞㝗ἐࢆ⏕ࡌࡓ㸬

ㅰ㎡㸸୙᮶ෆ᤼Ỉᵽ⟶࡟࠾ࡅࡿㄪᰝ࣭◊✲࡟㝿ࡋ࡚ࡣ㸪 ᅜᅵ஺㏻┬ᮾ໭ᆅ᪉ᩚഛᒁ࡞ࡽࡧ࡟໭ୖᕝୗὶἙᕝ஦ົ

ᡤ࡟ヲ⣽࡞ࢹ࣮ࢱࡸ㈨ᩱࢆࡈᥦ౪࠸ࡓࡔࡁࡲࡋࡓ㸬ࡲࡓ㸪 ᗈᓥ኱Ꮫ ྡ㄃ᩍᤵ బࠎᮌᗣẶ࡟ࡣ㈗㔜࡞ࡈᣦᑟ࣭࢔

ࢻࣂ࢖ࢫࢆ࠸ࡓࡔࡁࡲࡋࡓ㸬ᮏᩥࢆ⤊࠼ࡿ࡟࠶ࡓࡾ㸪ࡇ ࡇ࡟グࡋ࡚ㅰពࢆ⾲ࡋࡲࡍ㸬

ཧ⪃ᩥ⊩

1) ᮾ໭ᆅ᪉ᩚഛᒁ㸸ᮾ໭ᆅ᪉ᩚഛᒁᆅ㟈⅏ᐖ᝟ሗ ➨63ሗ㸪 2011.4.10

2) ᅜᅵ஺㏻┬ᮾ໭ᆅ᪉ᩚഛᒁ ໭ୖᕝୗὶἙᕝ஦ົᡤ㸸ᖹᡂ23

ᖺ9᭶ฟỈ㸦ྎ㢼15ྕ㸧ฟỈᴫせ࠙㏿ሗ∧ࠚ,2011.9.29

3) 㸦㈈㸧ᅜᅵᢏ⾡◊✲ࢭࣥࢱ࣮:ࠕἙᕝሐ㜵ࡢᵓ㐀᳨ウࡢᡭᘬ

ࡁ㸦ᨵゞ∧㸧ࠖ,ᖹᡂ24ᖺ2᭶

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