Laserfiche WebLink
American Tunnel bulkheads #2 & #3 Page 5 January 15, 2001 <br /> Table 1 . Water inflow points between portal, Station 0+00, and Station 27+00 <br /> Distance Notes Distance Notes <br /> from from <br /> Portal Portal <br /> 2+20 Air Door 7+24 S rib dries up <br /> 2+39 - 2+63 Timber - Seepage S rib - minor N rib seeps increase <br /> 2+63 - 3+10 Seepage S rib - minor 7+24 - 8+70 Mostly dry - minor point seeps N rib <br /> 3+11 - 3+13 Seepage N rib - minor 8+70 X-cutting structure S rib <br /> 3+13 - 3+40 Seepage N & S ribs - minor 8+56 X-cutting structure N rib <br /> S rib increase @ 1+13 8+80 Seep N rib <br /> 3+40 - 3+58 Timber 9+10 Seepage increases - both ribs <br /> Seepage S rib - minor rock more fractured <br /> N rib fairly dry S rib seepage larger <br /> 3+67 - 3+82 Proposed bulkhead area, Size 121W 9+60 S rib dries up <br /> x 141H, seepage S rib - minor 9+95 N rib dries up <br /> 3+85 Seepage increase S rib - minor 10+25 - 10+32 Doghole - S rib <br /> N rib fairly dry 10+30 Seepage starts both ribs <br /> 4+11 Small seep - N & S ribs 10+40 Structure enters N rib - S rib @ 8+05 <br /> 4+35 - 4+39 Seepage S rib - minor intermittent seepage - both ribs <br /> seepage N rib - minor 10+91 Fan/air door bulkhead <br /> gouge zone start 11+05 S rib intermittent seepage continues <br /> 4+61 End of gouge zone S rib - S rib dry N rib dries up <br /> 4+61 - 4+66 N rib seep 11+40 N rib intermittent seepage starts <br /> 4+66 End of gouge zone N rib - N rib dry 11+82 N rib seepage increases <br /> 4+72 Seepage S rib starts - minor 12+74 S rib dries up <br /> 4+84 Seepage N rib starts - minor 13+03 N rib dries up <br /> 5+05 Drips N rib to drift center 13+13 Gouge fault enters S rib <br /> 5+52 Structure S rib - seeps stop 13+27 Gouge fault enters N rib <br /> 5+62 - 5+69 Seepage & drips N rib 13+60 Fault x-cut drift - seepage starts <br /> seepage S rib - minor both ribs <br /> 5+72 Seepage S rib - minor 14+20 - 16+10 Minor seepage both ribs <br /> N rib becomes dry 16+10 - 17+20 N rib seepage increases <br /> 6+12 X-cutting structure 17+20 - 18+70 Active seep zone - sheet flow both ribs <br /> S & N ribs seepage increases 19+72 S rib dries - structure <br /> 6+29 Seepage S rib - minor 19+95 N rib dries - structure <br /> N rib becomes dry 19+96 - 20+20 Both ribs dry - potential bulkhead site <br /> 6+48 N rib seep rib taper not great <br /> 6+84 Seepage S. rib - minor Size 13.51W x 131H <br /> N rib dry 20+30 Fault zone - seepage starts <br /> moderate to heavy <br />