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A bigger problem than ISIS: The Mosul Dam is failing

newyorker.com

41–50 of 179 posts

Re: A bigger problem than ISIS: The Mosul Dam is failing

#41
post #32
post #26

Earlier quoted context omitted.

"Amazing read, much longer than I generally get hooked into." Please, please subscribe to the New Yorker in some fashion ... I personally subscribe to the kindle version which is a very useful and workable format. The New Yorker[1] regularly has very, very good long form articles that have deepened my understanding of what I consider to be very important issues. Off the top of my head, I can think of three such artic…

I often find when I do get lost in an article, it's common to be something from the New Yorker. The articles are very well written and often explore the story in a way that is factual and creative that I really enjoy. Reading "Precedent and Prologue" (Gore V's bush supreme court article) I got so interested in the judicial activism concept and ended up lost on Wikipedia for a few hours bouncing around related article…

it's gotten a lot of buzz lately, including on HN, but if you're interested in going down the gaddafi hole a bit further i'd recommend the recent adam curtis film, hypernormalisation. his films tend to be a bit like getting lost in a wikipedia hole in their own right, though.

Re: A bigger problem than ISIS: The Mosul Dam is failing

#42

Is there a summary of the main risks? Sounds interesting but I don't have time for New Yorker-style reporting.

" ... Completed in 1984, the dam sits on a foundation of soluble rock. To keep it stable, hundreds of employees have to work around the clock, pumping a cement mixture into the earth below. Without continuous maintenance, the rock beneath would wash away, causing the dam to sink and then break apart. But Iraq’s recent history has not been conducive to that kind of vigilance. ... In February, the U.S. Embassy in Baghd…

It's really weird to see 'loosing' used in the correct manner online...

Re: A bigger problem than ISIS: The Mosul Dam is failing

#43
post #40

Earlier quoted context omitted.

I've seen those, but always assumed they were driving steel beams into the earth. I'm surprised that concrete can be manhandled that way without being smashed into pieces.

Driving concrete piling has generally been abandoned in USA/Canada/Western Europe due to the propensity of concrete to crack in tension during pile driving operations. Driven pile is typically steel now in most construction you will see unless you live in a place where concrete is extremely cheap compared to steel.

In that case what I've observed was probably steel after all. Thanks.

Re: A bigger problem than ISIS: The Mosul Dam is failing

#44

Dexter Filkins, the writer of this piece, is also the author of one of the best non-fiction books I've ever read - The Forever War (not the space war book). The Forever War https://www.amazon.com/dp/0307279448/ref=cm_sw_r_cp_api_OWDy...

Does the author typically write in such a narrative form? I had a hard time finishing this piece and normally very much enjoy descriptive writing. Perhaps it could have been more succinct.

Re: A bigger problem than ISIS: The Mosul Dam is failing

#45
post #5
post #3

> Kurdish officials intended to shut down the turbines, but American officials told them that this would add more water to the reservoir, making the dam more likely to burst. So isis continued to profit from the dam. “We wanted to strangle them, but we weren’t allowed,” a Kurdish official told me. Not that destroying infrastructure and killing the power to a city of civilians, despite ISIS control, is necessarily a g…

Probably lack of sufficient dump load.

A dump load is a sign of a poor civil and mechanical engineering design of a power plant. It means the mechanical system can't change the shaft power as fast as required.

Re: A bigger problem than ISIS: The Mosul Dam is failing

#46
post #4

It's hard to figure out if this event is unlikely or likely to happen. But I won't be surprised to wake up tomorrow to learn that there's a humanitarian crisis in Iraq.

Without action, it's certain it will happen. The question is not if, but when.

It sounds like they can keep grouting forever

Re: A bigger problem than ISIS: The Mosul Dam is failing

#47

Dexter Filkins, the writer of this piece, is also the author of one of the best non-fiction books I've ever read - The Forever War (not the space war book). The Forever War https://www.amazon.com/dp/0307279448/ref=cm_sw_r_cp_api_OWDy...

Does the author typically write in such a narrative form? I had a hard time finishing this piece and normally very much enjoy descriptive writing. Perhaps it could have been more succinct.

This is common for long-form New Yorker articles, not just this author.

Re: A bigger problem than ISIS: The Mosul Dam is failing

#49
post #39
post #12

Earlier quoted context omitted.

Don't know, I guess it depends on the depth, for small buildings you just hammer the concrete pillar in - https://www.youtube.com/watch?v=VkXTLAxGKxA I'm surprised you never witnessed it, I've seen this at least 3-4 times. Probably because nowadays constructions sites have big opaque fences around them.

This is not grouting. This is driving concrete piles. Grouting refers to multiple things when talking about foundations or underground work but here are some examples: Jet grouting - high pressure water/grout/air is used to displace and mix the soil and grout to make a soilcrete Compensation grouting - grout is injected under pressure into the soil in order to displace/heave the ground to counteract previous settleme…

But, how can they do this forever? They can't encase most of the reservoir in concrete?

Re: A bigger problem than ISIS: The Mosul Dam is failing

#50
The Masonry dam in Washington state near Seattle also has/had this problem. The geotechnical reports and conditions were ignored and the water flowed under and around the dam, popping up in all kinds of places.

The dam was never able to be filled and is just called the masonry dam since nobody wanted it named after them.

https://en.m.wikipedia.org/wiki/Cedar_River_(Washington)

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