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馮正一
Приєднався 27 сер 2011
Overtopping failure of a large-scale artificial dam in Taiwan (Feng and Chen, 2012) - Part 2 Surge
The height of the man-made test dam is 4 meters. The dam was built in the Huisun experimental forest of National Chung Hsing University (NCHU), Taiwan. The water overflowed the dam at 8 min 25 sec (08:25) of this video. The video was recorded by Prof. Zheng-yi Feng of NCHU on April 10, 2012 around 9:30 am. Prof. Su-chin Chen of NCHU established the dam for a group research on landslide dam failure mechanism supported by Taiwan National Science Council. The copyright of the video file is owned by Prof. Zheng-yi Feng and Prof. Su-chin Chen of NCHU, Taiwan.
Observation of this dam failure:
1. Due to the shooting angle from the downstream and steep sloping of the creek bed, we cannot see the water rising during impounding at the upstream side.
2. The inflow from an upstream canal was about 1~2 CMS.
3. Water is seeping out from the bottom of the dam since 00:10.
4. The seepage water gradually increases with increasing water level.
5. At 08:25, start of overflow.
6. A small "alluvial fan" was formed till 10:35 by the eroded dam materials.
7. The dam breached at about 10:45 and the surge wave front traveled downstream.
8. There is a peak flooding discharge/stage can be observed.
9. The dam was eroded horizontally and lowered gradually.
10. The flash flood due to the breach lasted about 1 min 15 sec.
11. and others.
By Prof. Zheng-yi Feng on May 12, 2012, e-mail: tonyfeng@nchu.edu.tw
Observation of this dam failure:
1. Due to the shooting angle from the downstream and steep sloping of the creek bed, we cannot see the water rising during impounding at the upstream side.
2. The inflow from an upstream canal was about 1~2 CMS.
3. Water is seeping out from the bottom of the dam since 00:10.
4. The seepage water gradually increases with increasing water level.
5. At 08:25, start of overflow.
6. A small "alluvial fan" was formed till 10:35 by the eroded dam materials.
7. The dam breached at about 10:45 and the surge wave front traveled downstream.
8. There is a peak flooding discharge/stage can be observed.
9. The dam was eroded horizontally and lowered gradually.
10. The flash flood due to the breach lasted about 1 min 15 sec.
11. and others.
By Prof. Zheng-yi Feng on May 12, 2012, e-mail: tonyfeng@nchu.edu.tw
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Відео
Overtopping failure of a large-scale artificial dam in Taiwan (Feng and Chen, 2012) - Part 1 Prelude
Переглядів 8 тис.12 років тому
The height of the man-made test dam is 4 meters. The dam was built in the Huisun experimental forest of National Chung Hsing University (NCHU), Taiwan. The video was taped by Prof. Zheng-yi Feng of NCHU on April 10, 2012 9:30 am. Prof. Su-chin Chen of NCHU established the dam for a group research on landslide dam failure mechanism supported by Taiwan National Science Council. The hydrological p...
This is not a large dam. Geez, a few trucks full of dirt and rock and a bulldozer could make that in a couple of hours. It was not a permanent dam for sure. Looks like someone just made if for fun before the rains hit an obvious river.
Watching April 2023
Undermining of this rockpile started as soon as water reached it.
I wonder if those people on the opposite bank were aware of the quite severe danger they were in, due to the rapid erosion. Why didn't the others on this (camera) side try to warn them?
Stones don't hold back rivers ;p
My best friend, You Great Good... !!! I wish you every day of your development. Best Relaxing +thumb up3!
I figure one could say all dams are artificial. I have yet to see one that was not made by man or animal, which makes them artificial. If it were made by nature is would surely overtop and wash away.
Why are people just standing there for. Do something! Fix it.
To me, the results were easily predetermined. Of course the water will dissolve the dirt and take away smaller rocks at the top until enough has been removed that the water flow increases enough to take away bigger chunks thereby continuing to enlarge the hole and allowing more water through. I don't understand the purpose of this for something so obvious. If you are funded for this it seems a waste of money that could be used elsewhere.
You know, and I think that I can speak for everyone, the Taiwanese aren't particularly good with Civil Engineering or building structural facilities and infrastructure. For these types of things, where their Bamboo Reinforcement leaves much to be desired, they rely on more reliable construction technology and American resources.
Back in the day, before the housing developments, we had drainage ditches and cow pastures. I loved building little dams to see if I could (obviously temporarily) divert the water. I promise that no salmon were harmed in the process.
Am I the only one thinking that the water looks lower behind the dam right before it over tops?
Chinese; absolute failures with civil engineering across the board.
Fake!
Start at 8:30
looks fake as fuck
Fake
It is expected to fail cause the idea came from America.
rock available cheap downstream
Darn I guess that don't work out now did it lol
Belly laugh at all the people who don't realize this was an engineering research experiment studying the dynamics of dam failure. Which, by the way, is a very hot topic in Taiwan.
Dam ordered on Banggood.. no Refund
Thanks for the video
Human: spends hours building a dam River: spends 4 minutes going back to normal
That is a test dam, idiots!
I'm not an expert, but the water is already flowing underneath the dam, if that's not a sign nothing really is....
Not sure why that was there to begin with. That wasn’t a damn it was a pile of gravel and rock. It didn’t really even serve to hold water as it was porous.
there is no way this dam overtops. 8:25 i stand corrected.
I was sleeping and this came on. I thought it was someone frying bacon
That was fascinating to watch how it failed.
I dont understand how the water overflows when its much lower in the background (i did read the description still dont understand how, just searching for explanation).
From what I can tell the angle of the camera makes it appear as though that is a smaller slope than it actually is. I wondered the same thing and started to look much closer at the background. The bridge in the background does not look quite right so I suspect the angle of the video is misleading a little bit.
They got some kinda special anti-grav water over there in Taiwan?
I don't know why I enjoy dams breaking. It's like watching a fire you can't take your eyes off.
I'm not sure about your title, I think a dam, by definition, is artificial. Unless you're comparing it to one of those natural dams that grow across rivers???
Made in Taiwan.
The water looks like it's appearing out of nowhere.
Halloween 2020 comming up and it looks like it was the bugs in silent hill coming out of the dam ⏬👍
...exciting...yet interesting veido ...thank you...
......super video......👍💓👍💓👍 👍💓👍💓👍thank you............
Dkwlgrej
Well, that obviously didn't work.
x
Not even a high dam judging from the height of the guys standing there and the erosion mark on the side.
I see that beavers built better dams without some vaunted engineering degree. So disappointed. Darwin Award for intelligence.
It would’ve taken you two seconds to read the caption.. but instead you made a fool of yourself
Tens of gallons of water falling on the unsuspecting daffodils at the bottom of this very non-steep hill was traumatic. Oh my heck!
I find it very surprising the embankment kept eroding after the river was flowing at level. When building dams you need to build into the embankment not on top of it or against it this is the result.
LOL, made in Taiwan
I was expecting more damage but it was childish
and what the difference between ''' a dam failure'' and ''a over-topping dam failure'' ???
The same as the difference between '" a comment" and "a UA-cam comment"
The dam fell apart even faster after the water reached the top thus proving the basic theory of all dams the force against the wall will keep it in place but once the top is breached you get the two forces compression and expansion at the same time They use concrete for dams and concave walls because the concrete will push against the side walls keeping it in place thus the dam expands slightly as the weight of the water pushes against the wall but once the water tops you get water compressing the dam for which it was not designed for A dam must never breach the top henceforth why most dams start releasing at 95% of the capacity but that is a slow release the amount of water there after can be controlled
The difference between a minor oil leak and an oil filter blowing out from too much oil
Dear friends: We did many dam breach tests in the past years since May 12, 2012. Recently, we have published a SCI original paper in Landslides journal with two time-lapse movies for the dam breach and slope erosion test performed on November 1, 2018. The paper is: Zheng-Yi Feng, Hao-Yang Huang and Su-Chin Chen* (2020) "Analysis of the Characteristics of Seismic and Acoustic Signals Produced by a Dam Failure and Slope Erosion Test" , Landslides, published online on March 19, 2020. It can be accessed at rdcu.be/b3kv6 or doi.org/10.1007/s10346-020-01390-x or contact me. Best wishes, −− Zheng-yi (Tony) Feng, Ph.D., P.E. Professor Department of Soil and Water Conservation National Chung Hsing University 145, Xingda RD Taichung, 402 Taiwan web.nchu.edu.tw/pweb/users/feng/ e-mail: tonyfeng@nchu.edu.tw
here's 15,000 years of experience of being allowed to exist.. YOU WILL NEVER CONTROL GRANDMOTHER EARTH!! your study of water and nature consists of a few hundred years experience...our elders can teach you more than all your teachers and science combined..your soil and water conservation is a joke.. you people can't live in the bush of the land for a month..you've just put a new spin on how to destroy what ensures our existence ..