e a c e R iv er Photo 1 (Aerial View) Looking north down ... · PDF fileLooking north down...
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GP - 31 Page 1 of 4 2006-1002C December 2007 Hwy 740:02 Shaftesbury Ferry (South) Slide File No: 2006-1002Ca20b File No: 2006-1002Ca20b Note: Photos taken on June 2007 Note: Photos taken on June 2007 Photo 1 (Aerial View) Looking north down valley slope towards Peace River - Slide movement occurred at about 2/3 height of valley slope - A detour was constructed by notching into the backslope stable grounds - A local road runs along toe of the valley slope Photo 2 (Aerial View) Looking west at face of Peace River Valley slope (Peace River and ferry terminal to right of photo) - Slide headscarp at previous backslope ditch and edge of existing detour - Slide probably daylights at mid-height of lower valley slope (mid-height between highway elevation and local road at floodplain elevation) - Soil debris run out probably at below mid-height of lower valley slope L c l Ro d oa a L c l Ro d oa a Detour Detour Hwy 740:02 (To Hwy 49) Hwy 740:02 (To Hwy 49) Slide Site Slide Site Peace iver R Peace iver R South Ferry Terminal South Ferry Terminal o a L cal Ro d o a L cal Ro d To Ferry and River To Ferry and River
Transcript of e a c e R iv er Photo 1 (Aerial View) Looking north down ... · PDF fileLooking north down...
GP - 31Page 1 of 4
2006-1002C December 2007Hwy 740:02
Shaftesbury Ferry (South) Slide
File No: 2006-1002Ca20bFile No: 2006-1002Ca20b
Note: Photos taken on June 2007Note: Photos taken on June 2007
Photo 1 (Aerial View)
Looking north down valley slope towards Peace River - Slide movement occurred at about 2/3 height of valley slope - A detour was constructed by notching into the backslope stable grounds- A local road runs along toe of the valley slope
Photo 2 (Aerial View)
Looking west at face of Peace River Valley slope(Peace River and ferry terminal to right of photo)- Slide headscarp at previous backslope ditch and edge of existing detour- Slide probably daylights at mid-height of lower valley slope (mid-height between highway elevation and local road at floodplain elevation)- Soil debris run out probably at below mid-height of lower valley slope
Lc
l Ro
do
aa
Lc
l Ro
do
aa
DetourDetour
Hwy 740:02(To Hwy 49)Hwy 740:02(To Hwy 49)
Slide SiteSlide Site
Peace iverR
Peace iverR
South FerryTerminal
South FerryTerminal
o aL cal Ro d
o aL cal Ro d
To Ferry and RiverTo Ferry and River
GP - 31Page 2 of 4
2006-1002C December 2007
File No: 2006-1002Ca20bFile No: 2006-1002Ca20b
Note: Photos taken on June 2007Note: Photos taken on June 2007
Photo 3
Looking north downgrade (towards Peace River) along highway- Headscarp of slide and pavement cracking and subsidence- 60m-70m breadth of headscarp (along roadway)- About 1.5 subsidence of road grade as a result of slide movements- Detour (to left of photo) along backslope
Photo 3a
Close up view of headscarp- Pavement block cracking @50mm to 250mm widths- South edge of slide and pavement crack (in the foreground and front of photo)- North edge of side at far end of photo
Hwy 740:02Shaftesbury Ferry (South) Slide
GP - 31Page 3 of 4
2006-1002C December 2007
File No: 2006-1002Ca20bFile No: 2006-1002Ca20b
Note: Photos taken on June 2007Note: Photos taken on June 2007
Photo 4Looking at slide headscarp (same as Photo # 3)- Another view
Hwy 740:02Shaftesbury Ferry (South) Slide
Photo 4a
Looking downvalley (slide down dip direction) at north edge of slide - Propagation of cracking downslope into tree area
Photo 4b
Looking downvalley (slide down dip direction) at south edge of slide - Pavement Cracking and subsidence- Propagation of cracking downslope into tree area
South Edgeof Slide
South Edgeof Slide
North Edgeof Slide
North Edgeof Slide
tricia.hurry
Stamp
GP - 31Page 4 of 4
2006-1002C December 2007
File No: 2006-1002Ca20bFile No: 2006-1002Ca20b
Note: Photos taken on June 2007Note: Photos taken on June 2007
Photo 5a
Photo 5
Photo 5b
Looking down slide at lower valley slope from bench below highway- Local road at bottom of slope- Slide scarp exposure revealed high plasticity clay- Seepage and wet silt soils can be located at silt soil zone at mid-height of this lower valley slope (lower part of photo)
A close up view of the slide scarp Wet silt soil zone at mid-height of this lower valley slope
Hwy 740:02Shaftesbury Ferry (South) Slide
