㪧㪈㪈㪅㵘ἴኂጁᱧ䈮ၮ䈨䈒ᐢၞ⊛䈭㆏〝ᢳ㕙ἴኂ⊒↢ᐲ੍᷹࿾࿑䈱૞ᚑ
Macro hazard map of road slope based on historical disasters⍫ፉ⦟♿䊶૒䇱ᧁ㕏ੱ䊶ୖᯅ⒤ᐘ䋨࿯ᧁ⎇ⓥᚲ䋩ἴኂ⊒↢ᢙ⴫ጀ፣უ࿯⍹ᵹ㪌㪇㪇ጤ⋚፣უ〝㕙⇣Ᏹ㪇㪅㪉㪌㪇㪅㪉㪇⊒↢㗫ᐲ㪇㪅㪈㪌㪇㪅㪈㪇㪇㪅㪇㪌㪈㪇㪇⴫ጀ፣უ
1067 ઙ㧔81%㧕

㪇ർᶏ㆏ ᧲ർ 㑐᧲ ർ㒽 ਛㇱ ㄭ⇰ ਛ࿖ ྾࿖ ਻Ꮊ ᴒ✽㪇㪅㪇㪇࿑˴࿾ᣇᢛ஻ዪߏߣߩ㆏〝ᢳ㕙ἴኂ⊒↢ᢙ࿾ߔߴࠅ⴫ጀ፣უἴኂᒻᘒጤ⋚፣უ⴫ጀ፣უ䈏㪈㪃㪇㪍㪎ઙ䈫ో૕䈱⚂㪏ഀ䉕භ䉄ᦨ䉅ᄙ䈒䋬〝㕙⇣Ᏹ㩿㪎㪏ઙ䋩䋬࿯⍹ᵹ㩿㪍㪍ઙ䋩䋬⪭⍹㩿㪍㪍ઙ䋩䈏⛯䈒䋮⸃ᨆ䈮䈲Უ㓸࿅䈏ᄢ䈐䈇ᣇ䈏ᦸ䉁䈚䈇䈢䉄䋬ኻ⽎ἴኂ : ⴫ጀ፣უኻ⽎࿾ၞ : ਻Ꮊ࿾ᣇ࿯⍹ᵹ࿾ၞᕈ〝㕙⇣Ᏹ
075 150300

450km
600࿑˴㆏〝ᢳ㕙ἴኂߩಽᏓߣἴኂᒻᘒ਻Ꮊ࿾ᣇ䈏㪍㪋㪌ઙ䈫࿶ୟ⊛䈮ᄙ䈒䋬ో૕䈱⚂ඨಽ䉕භ䉄䉎䋮න૏〒㔌䈅䈢䉍䈱⊒↢㗫ᐲ䈪䈲ઁ࿾ၞ䈱ታ䈮㪐୚䈮䉅䈭䉎䋮C(t)=䈢䈣䈚䋬ઁ࿾ၞ䋬ઁ䈱ἴኂᒻᘒ䈪䉅૞ᚑ䈲น⢻C : ἴኂ⊒↢ଥᢙC(g)  C(t)  C(r)㆏〝ᢳ㕙ἴኂ⊒↢㗫ᐲ(RSDI) =C(AVR)࿾⾰૕ߏߣߩ⊒↢ઙᢙ(ઙ/15ᐕ)ฦ࿾⾰૕ࠍㅢㆊߔࠆ
⋥ロ࿖㆏ߩ඙㑆ᑧ㐳 (km)(g):࿾⾰ߦ⿠࿃ߔࠆଥᢙ
(t) :࿾ᒻ䋨௑ᢳⷺ䋩ߦ⿠࿃ߔࠆଥᢙ

௑ᢳ඙ಽߏߣߩ⊒↢ઙᢙ(ઙ/15ᐕ)ฦ௑ᢳ඙ಽࠍㅢㆊߔࠆ⋥ロ࿖㆏ߩ඙㑆ᑧ㐳 (km)C(r) =

㽳㩷╙྾♿Ἣጊጤ㘃 
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0mm -25mm -50mm -100mm -200mm -300mm -400mm 400mm-Ԙ ԙ Ԛ ԛ Ԝ ԝ Ԟ ԟ Ԡ ԡ Ԣ ԣ Ԥ ԥ Ԧ㽲㩷ᓟᦼᦝᣂ਎䌾ቢᣂ਎ၸⓍ‛㽺㩷ᓟᦼਛ↢ઍ䌾ฎ╙ਃ♿㒽ᚑἫጊጤ㘃

C(g) (ઙ/km/15ᐕ)

 0mm -25mm -50mm -100mm -200mm -300mm -400mm 400mm- 

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0mm -25mm -50mm -100mm -200mm -300mm -400mm 400mm-0mm -25mm -50mm -100mm -200mm -300mm -400mm 400mm-㽼㩷⊕੝♿䉺䊷䊎䉻䉟䊃ၸⓍጤ
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0mm -25mm -50mm -100mm -200mm -300mm -400mm 400mm-㽵㩷╙྾♿㒽ᚑ䌾ᵻᶏᚑ⎈ድၸⓍ‛㽽㩷ฎ↢ઍ䌾ਛᦼਛ↢ઍᶏᚑၸⓍጤ䋺㕖䌾ᒙᄌᚑ⋧㽶㩷㞲ᣂ਎䌾ᦝᣂ਎㒽ᚑἫጊጤ㘃㽾㩷ฎ↢ઍ䌾ਛᦼਛ↢ઍᶏᚑၸⓍጤ䋺⚿᥏ ጤ⋧㽷㩷ਛᦼਛᣂ਎䌾㞲ᣂ਎ᶏᚑၸⓍ‛㽿㩷వᣂ╙ਃ♿⿥Ⴎၮᕈ䌾Ⴎၮᕈ⽾౉ጤ䈍䉋䈶✛⦡ጤ㘃㽸㩷ਛᣂ਎ᶏᐩἫጊጤ㘃㾀㩷వᣂ╙ਃ♿㉄ᕈ䌾ਛᕈ⽾౉ጤ䈍䉋䈶 㤗ጤ㘃        ㆏〝ᢳ㕙௑ᢳⷺ (q)࿑˴௑ᢳ඙ಽߏߣߩ⴫ጀ፣უ⊒↢㗫ᐲ࿑˴࿾⾰ߏߣߩ⴫ጀ፣უ⊒↢㗫ᐲ㆏〝ᢳ㕙ἴኂ⊒↢ઙᢙ(ઙ/15ᐕ)⋥ロ࿖㆏ᑧ㐳〒㔌(km)

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0mm -25mm -50mm -100mm -200mm -300mm -400mm 400mm-0

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0mm -25mm -50mm -100mm -200mm -300mm -400mm 400mm-0mm -25mm -50mm -100mm -200mm -300mm -400mm 400mm-ἴኂߥߒ
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0mm -25mm -50mm -100mm -200mm -300mm -400mm 400mm-0mm -25mm -50mm -100mm -200mm -300mm -400mm 400mm-㾀㩷వᣂ╙ਃ♿㉄ᕈ䌾ਛᕈ⽾౉ጤ䈍䉋䈶 㤗ጤ㘃Ԥ ฎ↢ઍ䌾ਛᦼਛ↢ઍᶏᚑၸⓍጤ㪒㩷⚿᥏ ጤ⋧ 㽿㩷వᣂ╙ਃ♿⿥Ⴎၮᕈ 㵘㵘㵘㵘㵘㵘㵘䌾Ⴎၮᕈ⽾౉ጤ䈍䉋䈶✛⦡ጤ㘃 㽼㩷⊕੝♿䉺䊷䊎䉻䉟䊃ၸⓍጤ

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㽻㩷ᓟᦼਛ↢ઍ䌾ฎ╙ਃ♿䊐䊥䉾䉲䊠ဳ੕ጀၸⓍጤ

C(AVR)=㽴㩷╙྾♿Ἣጊ⎈ድၸⓍ‛

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0mm -25mm -50mm -100mm -200mm -300mm -400mm 400mm-㽳㩷╙྾♿Ἣጊጤ㘃㽹㩷╙ਃ♿㕖ᶏᚑ䌾ᵻᶏᚑၸⓍጤ

0㽴㩷╙྾♿Ἣጊ⎈ድၸⓍ‛ 㽻㩷ᓟᦼਛ↢ઍ䌾ฎ╙ਃ♿䊐䊥䉾䉲䊠ဳ੕ጀၸⓍጤ࿖࿯࿾ℂ㒮䈱ᢙ୯࿾࿑㪌㪇㫄䊜䉾䉲䊠䋨ᮡ㜞䋩䉕૶↪䈚䈩▚಴
0mm -25mm -50mm -100mm -200mm -300mm -400mm 400mmㅪ⛯㔎㊂ (mm)㽷㩷ਛᦼਛᣂ਎䌾㞲ᣂ਎ᶏᚑၸⓍ‛

⋥ロ࿖㆏

C(t) (ઙ/km/15ᐕ)

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䎙䎘䏲௑
䎃 ᢳⷺ
䎃䎓䏲ἴኂጁᱧ

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n ࿾⾰඙ಽฬ㽵㩷╙྾♿㒽ᚑ䌾ᵻᶏᚑ⎈ድၸⓍ‛(r):ㅪ⛯㔎㊂೔㆐ᤨ߹ߢߩ⊒↢₸(AVR):ᒰ⹥࿾ၞߦ߅ߌࠆᐔဋ⊒↢㗫ᐲฦㅪ⛯㔎㊂೔㆐ᤨ䉁䈪䈱ἴኂ⊒↢ᢙ㩷㩿ઙ㪆㪈㪌ᐕ㪀ోἴኂ⊒↢ᢙ䋨ઙ㪆㪈㪌ᐕ䋩㽲㩷ᓟᦼᦝᣂ਎䌾ቢᣂ਎ၸⓍ‛〝㕙⇣Ᏹ࿯⍹ᵹ࿑˴㆏〝ᢳ㕙ἴኂߩ଀࿾ߔߴࠅᐕᐲጤ⋚፣უ⴫ጀ፣უ⪭⍹⪭⍹࿑˴㆏〝ᢳ㕙ἴኂ⊒↢ᢙߩᄌㆫC(g)=㪇㪅㪊㪇㪉㪇㪇 H2 H3 H4 H5 H6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16 

૞ᚑᚻᴺ

㪍㪇㪇

㪊㪇㪇



࿾䈜䈼䉍

⚥Ⓧ⋧ኻᐲᢙ (%)

㆏〝ᢳ㕙ἴኂᢙ

⪭⍹㪋㪇㪇ἴኂᒻᘒ

࿯⍾ἴኂ✚ᢙ㪇㪅㪊㪌㪎㪇㪇⊒↢ᢙ䋨ઙ䋩ጤ⋚፣უ
12 ઙ䋨1%)ᢳ㕙ἴኂ⊒↢✚ᢙ㆏〝ᢳ㕙ἴኂ⊒↢ᢙ㪏㪇㪇⪭⍹66 ઙ䋨5%䋩

࿾ߔߴࠅ
21 ઙ(2%)〝㕙⇣Ᏹ
78 ઙ(6%)⊒↢ᢙ(ઙ)

࿯⍹ᵹ
66 ઙ䋨5%)⊒↢㗫ᐲ(ઙ/km/15ᐕ)䈲䈛䉄䈮㵘ᢳ㕙ἴኂ䈮䉋䉎㆏〝䈻䈱ⵍኂ䉕ૐᷫ䈜䉎䈢䉄䈮䈲䋬㆏〝ᢳ㕙䈱㕙⊛䈭⺞ᩏ䈫ㆡಾ䈭ኻ╷䈏ᔅⷐ䈪䈅䉎䈏䋬䉒䈏࿖䈱㆏〝䈲⋥ロ࿖㆏䈣䈔䈪䉅⚂㪉㪉㪃㪇㪇㪇㫂㫄䈮㆐䈚䋬ᢳ㕙ᢙ䉅⤘ᄢ䈪䈅䉎䈢䉄䋬ല₸⊛䈭ὐᬌ䈱䈢䉄䈮䈲䋬ὐᬌኻ⽎඙㑆䈱ㆡಾ䈭䉴䉪䊥䊷䊆䊮䉫䈏㊀ⷐ䈫䈭䉎䋮㵘䈠䈖䈪䋬㪈㪐㪐㪇㩷ᐕ㪋㩷᦬䌾㪉㪇㪇㪋㩷ᐕ㪈㪉㩷᦬䈮⋥ロ࿖㆏䈪⊒↢䈚䈢ᢳ㕙ἴኂ䈱䊂䊷䉺䋨ㅢⴕᱛ䉄䉕઻䈦䈢ἴኂ䈱䉂䋩䈎䉌䋬࿾⾰䋬࿾ᒻ䋨ᢳ㕙䈱௑ᢳⷺ䋩䈍䉋䈶㒠㔎㊂䈱ᄌൻ䈏ᢳ㕙፣უ䈱⊒↢䈮ਈ䈋䉎ᓇ㗀ᐲ䉕▚಴䈚䋬࿾ၞ䈱ẜ࿷⊛䈭㆏〝ᢳ㕙ἴኂ⊒↢ᐲ䉕⴫䈚䈢䊙䉾䊒䈪䈅䉎䇸㆏〝ᢳ㕙ἴኂ⊒↢ᐲ੍᷹࿾࿑䇹䉕૞ᚑ䈚䈢䋮

0mm -25mm -50mm -100mm -200mm -300mm -400mm 400mm-࿑˴ㅪ⛯㔎㊂ߣἴኂ⊒↢ᢙߣߩ㑐ଥ਻Ꮊ࿾ᣇߩ⋥ロ࿖㆏ߦ߅ߌࠆ = 591ઙ/15ᐕ⴫ጀ፣უ⊒↢ઙᢙ=㵘2,023 km䋨㪟㪈㪌䋩਻Ꮊ࿾ᣇߩ⋥ロ࿖㆏ᑧ㐳

C(avr) = 0.292(ઙ/km/15ᐕ)⚿ᨐㅪ⛯㒠㔎㊂䉕ᜰᮡ䈫䈚䈢ᢳ㕙ἴኂ⊒↢ᐲ䈱੍᷹

ኻ╷ఝవ඙㑆඙㑆䈱䉴䉪䊥䊷䊆䊮䉫䈏น⢻ㅪ⛯㔎㊂䎓䏐䏐ㅪ⛯㔎㊂䎕䎘䏐䏐㆏〝ᢳ㕙▤ℂ䈱ല₸ൻㅪ⛯㔎㊂䎘䎓䏐䏐ㅪ⛯㔎㊂೔㆐ᤨ䭍䬶䬽ἴኂ⊒↢▎ᚲ㆏〝ᢳ㕙ἴኂ⊒↢㗫ᐲ䯴ઙ䎒䏎䏐䎒䎔䎘ᐕ䯵䎓䎃䎐䎃䎓䎑䎓䎔䎓䎑䎓䎔䎃䎐䎃䎓䎑䎔ㅪ⛯㔎㊂䎔䎓䎓䏐䏐ㅪ⛯㔎㊂䎕䎓䎓䏐䏐ㅪ⛯㔎㊂䎖䎓䎓䏐䏐࿑˴㆏〝ᢳ㕙ἴኂ⊒↢ᐲ੍᷹࿾࿑䎓䎑䎔䎃䎐䎃䎔䎔䎃䎐䎃ㅪ⛯㔎㊂䎗䎓䎓䏐䏐