February 14, 2007: Big-ass drain hole

zippyt · 02-14-2007, 06:05 PM

here's some scale of the "OUT pipe "

xoxoxoBruce · 02-14-2007, 07:44 PM

Yeah, 72 ft diameter at the top tapering down to 28 ft dia at the out pipe. 48,400 cubic ft per second max. I wonder how long it would take to make it through the 700 feet?

Kitsune · 02-15-2007, 08:58 AM

Quote:

Originally Posted by zippyt

here's some scale of the "OUT pipe "

I didn't think you were supposed to go in the out hole.

Elspode · 02-15-2007, 09:06 AM

I guess the spillway shaft itself is just a tunnel drilled through solid rock? I'd like to the see profile of that...I mean, it has 770' of drop, and has to make a bend from vertical to horizontal at some point. The water pressure at that bend must be tres' impressivo.

xoxoxoBruce · 02-15-2007, 12:10 PM

Quote:

Originally Posted by Elspode

I guess the spillway shaft itself is just a tunnel drilled through solid rock? I'd like to the see profile of that...I mean, it has 770' of drop, and has to make a bend from vertical to horizontal at some point. The water pressure at that bend must be tres' impressivo.

Pretty sure it's concrete all the way, constructed integral with the dam. Hoover/Boulder Dam, however, uses bypass tunnels through the rock that are fed by a spillway channel. I've seen that setup and those tunnels must be 50 feet in diameter.

Elspode · 02-15-2007, 09:07 AM

Quote:

Originally Posted by Kitsune

I didn't think you were supposed to go in the out hole.

That's a myth perpetrated upon clueless men by unadventurous women...

Elspode · 02-15-2007, 09:30 AM

Two views of a dry glory hole.

02-14-2007, 06:05 PM	#1
zippyt LONG LIVE KING ZIPPY! per Feetz Join Date: Mar 2003 Location: Arkansas Posts: 7,661	here's some scale of the "OUT pipe " Attached Images __________________ "Success is getting what you want. Happiness is wanting what you get. " Brother Dave Gardner

02-14-2007, 07:44 PM	#2
xoxoxoBruce The future is unwritten Join Date: Oct 2002 Posts: 71,105	Yeah, 72 ft diameter at the top tapering down to 28 ft dia at the out pipe. 48,400 cubic ft per second max. I wonder how long it would take to make it through the 700 feet? __________________ The descent of man ~ Nixon, Friedman, Reagan, Trump.

02-15-2007, 09:06 AM	#4
Elspode When Do I Get Virtual Unreality? Join Date: Dec 2002 Location: Raytown, Missouri Posts: 12,719	I guess the spillway shaft itself is just a tunnel drilled through solid rock? I'd like to the see profile of that...I mean, it has 770' of drop, and has to make a bend from vertical to horizontal at some point. The water pressure at that bend must be tres' impressivo. __________________ "To those of you who are wearing ties, I think my dad would appreciate it if you took them off." - Robert Moog

02-15-2007, 09:30 AM	#7
Elspode When Do I Get Virtual Unreality? Join Date: Dec 2002 Location: Raytown, Missouri Posts: 12,719	Two views of a dry glory hole. Attached Images __________________ "To those of you who are wearing ties, I think my dad would appreciate it if you took them off." - Robert Moog

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