But they have to keep the spillway above the hole from failing by being undercut by the water.
Posted on 02/12/2017 6:49:25 PM PST by artichokegrower
I have heard that the emergency spillway is eroding through cutback. This will be an evolutionary erosive failure. It will take some time for the cut back. Hopefully the erosion will be stopped at bedrock, However, I fear that if the erosion of the emergency spillway, on the canted bedrock of the abutment communicates with the hydraulics of the principal spillway, this may result in a V notch failure. This would be the most serious type of failure.
(Excerpt) Read more at linkedin.com ...
Quick... print the Trillion dollars! It’s for the children! The women! Is it even remotely possible CA is about to set up the infrastructure scam? Maybe using the data experts needing extra cash from climategate? I thought CA was ready to soar alone..
Seems a bit suspicious that suddenly there is a problem. So let’s work a deal.. No sanctuary cities ever, put Rhamn out on the street, and fix CA voter fraud, then maybe we can work something out.
More shovel ready jobs.
The first part of that chopper footage gives a vantage we have not had in other video and it shows a much much wider area of overtopping and run off erosion from the emergency spillway than anything else we have seen.
Just damn - dam.
Maggief,
Thanks for this link:
https://www.liveleak.com/view?i=08c_1486958413
Shows the reality of it, and the danger.
At 0:21 you see the water coming over the dirt to the —left— of the weir.
Just dirt...
Prayers UP!!!
It’s just amazing to watch this. Years of muddled, mistaken, and liberal thought have combined to bring this moment.
Lessons abound for willing students.
But they have to keep the spillway above the hole from failing by being undercut by the water.
Nothing 48 hours of drying and prep followed by 120,000 1/3 cubic yard helicopter delivered buckets of high-early ready mix concrete on top of 500 gabions of one foot diameter rip-rap couldn’t take care of in a heartbeat.
Only problem is that those buckets at one every 30 seconds would take one thousand hours to drop in place.
Thanks for the link.
http://www.freerepublic.com/focus/f-news/3513231/posts
Two months ago, I was wondering why they were letting California reservoirs get so full. I was focusing on Lake Shasta, since it was the biggest, but Lake Oroville was right behind it.
does anyone have a link for dam inundation area map for lake oroville?
There’s one on the large thread posted by FReeper steve86.
thankee
do you also have link to the map showing the inundation by hours
It depends on the purpose of the dam, if it is hydro electric or water reservoir only. Other factors are storm flow/snow pack modeling when originally designed. Snow pack melt is trickier because it may come off all at once if temperatures rise too fast or over a longer period of time if temperatures rise more slowly.
The emergency spillway should have been designed at an elevation and width that would have prevented the extreme stresses on the dam structure which would lead to catastrophic failure.
No, afraid not.
BWAAAAHAHAHAHAHAHAHAaaaaa!!
WELL PLAYED!
Downstream 7-11 operators be on the lookout!
1/3 cu yd sounded way too low but after researching it is a reasonable estimate for a single-rotor at that elevation.
The Ca NG has a dozen pretty new CH-47f Chinooks with a max cargo of 24,000 pounds. They may not want to get them dirty though.
There’s been no work done on either spillway today. Lake has only been lowered 8 feet.
In the wino counties, we have had highs up to 70 so far this week.
If that rain which is coming Wed/Thurs and Friday is warm, it will melt a lot of snow above the dam.
Hopefully for the families below the damn, that doesn’t happen,
I just used a 1/3 yard lift bucket size because it is one of the ready made sizes tower cranes use at the end of their reach. There are bigger hoppers for bigger cranes. Helicopter lift though needs to be easily snatched over and over so I would use something that is in the range of about 1/3 of their lift capacity.
Local news tonight described the incoming storms as “somewhat warm.”
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