240:(TBM), which was built in Vancouver at a cost of $ 258,000. Excavation was undertaken from both ends with the intention of meeting in the middle. The machine was later abandoned and excavation was carried out manually due to the soft rock clogging the teeth and gears and causing motor burn outs. The contractor quit and the water district completed the task in 1967. On completion, the tunnel was an engineering success. Even without modern laser technology, the tunnel was joined only 6 in (152 mm) off line. The project was almost incident free with the only major injury occurring when a worker's eye was damaged while drilling into a hole containing an undetonated stick of dynamite.
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would no longer meet the region's needs, the decision was made to excavate the tunnel. Prior to construction of the flowline, Arthur Adams, the consultant for the flowline construction, had proposed the Kapoor Tunnel be built. However, that era's technology was not yet up to the task.
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This tunnel can convey 580 million litres/day, 10 times greater than the Sooke
Flowline, and provides water to all municipalities, except Sooke and the Highlands. Its final cost was $ 5.6 million. The Sooke Flowline had been leaking and was vulnerable to blow downs and rock slides.
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Every
January, the tunnel is shut off and the city transfers over to the district's secondary Goldstream system. Workers walk the 8.8 km (5.5 mi) route to look for cracks and other defects.
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The narrow gauge railway restricted how much cement could be sent into the tunnel and slowed the lining process to 24 m (79 ft) per day.
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is a straight 8.8 km (5.5 mi) subterranean route which is the main transport of water from the Sooke Lake to the
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The tight space meant that only three men could work at the rock face, limiting progress to 7 metres (23 feet) per day
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The tunnel runs from the head tank near Sooke Lake, which maintains a constant pressure to the Japan Gulch
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Close quarters meant that only one cart could travel in the tunnel at a time
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Fresh air needed to be pumped in from the surface deep into the tunnel
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The rock the tunnel was being bored through was a crumbly, unstable
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The Kapoor Tunnel passes 1,000 ft (305 m) below two lakes.
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The project was a challenging feat due to a variety of factors:
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170:580,000 m/d (20,000,000 cu ft/d)
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335:. Victoria: Greater Victoria Water District.
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331:Greater Victoria Water District (1991).
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162:2.1 m (6 ft 11 in) max.
154:2.1 m (6 ft 11 in) max.
310:At The End of the Trail From Victoria
236:The tunnel was formed by a miniature
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312:. Victoria: Cougar Press Editions.
16:Water transport route in BC, Canada
223:. When it was determined that the
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199:Timeline of the CRD Water System
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333:History and General Information
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353:Tunnels in British Columbia
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277:Goldstream Provincial Park
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358:Tunnels completed in 1970
146:8.8 km (5.5 mi)
133:Integrated Water Services
131:Capital Regional District
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103:48.460766°N 123.573069°W
64:48.509520°N 123.691286°W
108:48.460766; -123.573069
69:48.509520; -123.691286
238:tunnel boring machine
44:Sooke Lake Head Tank
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308:Hall, Del (1989).
180:Construction start
221:Saanich Peninsula
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205:Kapoor Tunnel
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127:Maintained by
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119:Official name
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23:Kapoor Tunnel
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232:Construction
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143:Total length
283:Maintenance
275:Plant near
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83:Japan Gulch
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347:Categories
318:B002IGIN76
295:References
219:, and the
91:48°27′39″N
52:48°30′34″N
217:Esquimalt
209:Westshore
167:Capacity
175:History
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188:Opened
159:Height
41:Begins
267:Route
249:shale
151:Width
314:ASIN
203:The
191:1970
183:1960
80:Ends
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273:UV
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