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The underground cathedral protecting Tokyo from floods (2018)

bbc.com

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Re: The underground cathedral protecting Tokyo from floods (2018)

#61

Post by Yeul »

bencyoung wrote: post #41
srvmshr wrote: post #3

I have been to this place. It is limited viewing, requires a reservation & the slots run out practically in seconds. Tough for us residents to get it as well. My wife could snag it in her third try, as a late birthday trip last year. It is gargantuan & having massive holding capacity. To give semblance with something familiar, it was like standing in NY Grand Central station, except it was felt bigger, empty, damp &…

The Fens in East Anglia in the UK has a lot of interesting pumping tech. The latest can do 100m3/s ( https://www.edie.net/st-germans-pumping-station-keeps-fens-f... ). If all the pumps failed there would be hundreds of km2 underwater within days or weeks

In WW2 the Dutch government had to ask the Allies not to bomb any power stations. If left to nature the entire country would disappear in weeks...

Re: The underground cathedral protecting Tokyo from floods (2018)

#62

Post by lupusreal »

BeFlatXIII wrote: post #60
srvmshr wrote: post #3

I have been to this place. It is limited viewing, requires a reservation & the slots run out practically in seconds. Tough for us residents to get it as well. My wife could snag it in her third try, as a late birthday trip last year. It is gargantuan & having massive holding capacity. To give semblance with something familiar, it was like standing in NY Grand Central station, except it was felt bigger, empty, damp &…

The one with the stairs could've been ripped straight from the original Half-Life. Makes me want to play it again. Thank you for the reminder.

My first thought was Akira, but it's almost the same thing; there are some parts of Half Life which are lifted almost directly from Akira, like the first diagonal elevator that headcrabs slide down.

Re: The underground cathedral protecting Tokyo from floods (2018)

#64

Post by progman32 »

BeFlatXIII wrote: post #60
srvmshr wrote: post #3

I have been to this place. It is limited viewing, requires a reservation & the slots run out practically in seconds. Tough for us residents to get it as well. My wife could snag it in her third try, as a late birthday trip last year. It is gargantuan & having massive holding capacity. To give semblance with something familiar, it was like standing in NY Grand Central station, except it was felt bigger, empty, damp &…

The one with the stairs could've been ripped straight from the original Half-Life. Makes me want to play it again. Thank you for the reminder.

Dead ringer for the underground sections of Mirror's Edge.

Re: The underground cathedral protecting Tokyo from floods (2018)

#65

Post by OneDeuxTriSeiGo »

left-struck wrote: post #50
srvmshr wrote: post #3

I have been to this place. It is limited viewing, requires a reservation & the slots run out practically in seconds. Tough for us residents to get it as well. My wife could snag it in her third try, as a late birthday trip last year. It is gargantuan & having massive holding capacity. To give semblance with something familiar, it was like standing in NY Grand Central station, except it was felt bigger, empty, damp &…

> In addition to this underground chamber, there are two massive pumps on either sides, which divert the water from whichever river is surging to the other (Arakawa & Edogawa possibly). You probably mean pumping stations right? Usually single pumps don’t have that kind of flow rate. Just a nit pick though, your comment was really interesting!

Yeah throughout the entire facility (several large chambers with large tunnels between them) there's something like eighty 10MW pumps to move water out of the chambers into the river.

Re: The underground cathedral protecting Tokyo from floods (2018)

#66

Post by femto »

cesarb wrote: post #57
femto wrote: post #45

In a similar vein is the surge shaft being built as part of the Snowy 2.0 scheme in Australia. 28 metres diameter and 263 metres deep. It absorbs the momentum of the surge of water when the downstream power station closes its valves. https://www.snowyhydro.com.au/wp-content/uploads/2024/01/SH_...

> In a similar vein is the surge shaft being built as part of the Snowy 2.0 scheme in Australia. [...] It absorbs the momentum of the surge of water when the downstream power station closes its valves. Not the same power station, but I have to post a link to one of my favorite YouTube videos: https://www.youtube.com/watch?v=fJVBlhgt9j8 (Obere Wasserschlosskammer).

Impressive. I don't think I'd like to be the person on the walkway. No railings and he appears not to be attached in any way.
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