Good job
How Do You Keep a Subway from Flooding in the Age of Rising Seas? (2019)
21–30 of 53 posts
Re: How Do You Keep a Subway from Flooding in the Age of Rising Seas? (2019)
#22I places in Asia that have monsoon weather one typically walks UP a few steps before going down into a subway station (China/Taiwan/Hong Kong/etc)- for example this MTR entrance in Hong Kong: https://goo.gl/maps/MeiQU9HAKo5NgFAKA This is a great solution to short term small floods, but wont protect you against longer term, or waist deep+ street flooding like we saw in Henan last week.
I noticed this in Chengdu and Taipei and wondered a few times, why go up just to go down. Thanks for explaining this!
Re: How Do You Keep a Subway from Flooding in the Age of Rising Seas? (2019)
#23Warsaw (Poland) uses the bulkheads which were designed originally during the cold war era to provide an atomic shelter for the civilians. Fortunately, they weren't ever used for the original purpose, but they are now used as a prevention during the storms.
- Original article in Polish: https://www.komputerswiat.pl/artykuly/redakcyjne/grodzie-prz...
- Just the video showing the partition: https://streamable.com/390cxk
Re: How Do You Keep a Subway from Flooding in the Age of Rising Seas? (2019)
#24Re: How Do You Keep a Subway from Flooding in the Age of Rising Seas? (2019)
#25How will this hold up in 12 years? https://www.nasa.gov/feature/jpl/study-projects-a-surge-in-c...
https://tidesandcurrents.noaa.gov/sltrends/sltrends_station.... 110 years of 2.5mm per year. Something tells me the study you're referring to is wrong.
The NASA study is about flooding at high tide, not just the mean sea level. If you look closely at the graph in your source, you'll notice that the "monthly mean sea level with the average seasonal cycle removed" curve has a lot of variance. Now add monthly and seasonal cycles back in...
Re: How Do You Keep a Subway from Flooding in the Age of Rising Seas? (2019)
#26The Zhengzhou metro, one which got flooded, has blast doors in, and in between stations like most metros in the Bloc. The anger now is because despite millions spent on those blast doors, they were simply not activated. The shift chief of the metro was too afraid to stop the metro. The same for its very powerful flood defence pumps.
Do you have a source for that please?
Re: How Do You Keep a Subway from Flooding in the Age of Rising Seas? (2019)
#27Newer systems being built in Asia are avoiding subways/underground systems and preferring elevated systems. In fact during a major flood, the elevated railway was pretty much the only servicing transporting system in effect.
Not only subways, but when I was in Vietnam, a lot of the new highways around HCMC/Mekong Delta were all elevated for their entire length despite the landscape being flat. I assume to completely eliminate any flooding issues.
Re: How Do You Keep a Subway from Flooding in the Age of Rising Seas? (2019)
#28It's been the age of rising seas for 20,000 years.
https://commons.wikimedia.org/wiki/File:Post-Glacial_Sea_Lev...
Re: How Do You Keep a Subway from Flooding in the Age of Rising Seas? (2019)
#29Warsaw (Poland) uses the bulkheads which were designed originally during the cold war era to provide an atomic shelter for the civilians. Fortunately, they weren't ever used for the original purpose, but they are now used as a prevention during the storms. - Original article in Polish: https://www.komputerswiat.pl/artykuly/redakcyjne/grodzie-prz... - Just the video showing the partition: https://streamable.com/390cxk
Do they close off the whole subway system?
Re: How Do You Keep a Subway from Flooding in the Age of Rising Seas? (2019)
#30Warsaw (Poland) uses the bulkheads which were designed originally during the cold war era to provide an atomic shelter for the civilians. Fortunately, they weren't ever used for the original purpose, but they are now used as a prevention during the storms. - Original article in Polish: https://www.komputerswiat.pl/artykuly/redakcyjne/grodzie-prz... - Just the video showing the partition: https://streamable.com/390cxk
Do they close off the whole subway system?
the whole point is that they only need to shut off the stations which are at risk of flooding
PS. I think only the stations build as the first phase of the first line (planned in the '70s-'80s and finished mid '90s) have this feature.