Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




9535 posts

Uber Geek
+1 received by user: 2886

Trusted
Subscriber

Topic # 216671 7-Jul-2017 11:09
Send private message quote this post

FYI in case anyone wasn't aware. From the NZH

 

 

 

"A significant highway has been closed indefinitely by the threat of massive rock slips.

 

The NZ Transport Agency said this morning new geotechnical information has highlighted major safety risks in the Manawatu Gorge which are likely to keep the road closed for some time.

 

The State Highway 3 link from Hawke's Bay-Wairarapa to Manawatu and State Highway 1 on the southern side of the gorge, which separates the Tararua and Ruahine ranges, closed on April 24 because of a slip.

 

A release from NZTA said an urgent programme of additional work will get underway immediately to significantly improve the alternative Saddle Road route.

 

 

 

Regional transport system manager Ross I'Anson said a significant amount of work has been undertaken in the gorge to clear the slips which have come down since April, but geotechnical engineers have now confirmed that a large area above the Kerry's Wall rock face is highly unstable, with an imminent risk of further significant slips or rockfalls.

"Geotechnical assessments have confirmed that the entire hillside is moving, and the rate of that movement is accelerating. That's an indication that a slip as large or larger than the 2011 slip which closed the road for 14 months could come down at any time."






View this topic in a long page with up to 500 replies per page Create new topic
 1 | 2 | 3
Onward
10959 posts

Uber Geek
+1 received by user: 4808

Trusted
Subscriber

  Reply # 1814305 7-Jul-2017 11:28
2 people support this post
Send private message quote this post

I think its time to find a permanent alternative and close it permanently. The Saddle and Pahiatua Tack are OK but not up to the volume or heavy trucks.





Mike
Retired IT Manager. 
The views stated in my posts are my personal views and not that of any other organisation.

 

 It's our only home, lets clean it up then...

 

Take My Advice, Pull Down Your Pants And Slide On The Ice!

 

 


363 posts

Ultimate Geek
+1 received by user: 81


  Reply # 1814307 7-Jul-2017 11:29
One person supports this post
Send private message quote this post

The answer\solution isn't cheap whatever way you look at it.

 

Either requires a tunnel the entire length or

 

A open tunnel you see in the like of the swiss alps, the big concrete things that are open on the outside, something like this


 
 
 
 




9535 posts

Uber Geek
+1 received by user: 2886

Trusted
Subscriber

  Reply # 1814311 7-Jul-2017 11:40
Send private message quote this post

WyleECoyoteNZ:

 

The answer\solution isn't cheap whatever way you look at it.

 

Either requires a tunnel the entire length or

 

A open tunnel you see in the like of the swiss alps, the big concrete things that are open on the outside, something like this

 

 

 

 

Rock/Snow fall protection. Yes. However you do need to be sure that the ground underneath the road and to which the rock tunnel is attached won't slide away beneath you. As long as the risk is all above you then that should work.

 

 

 

I can't see anything happening. It'll just continue to be another pinch point on the road network, like the Rimutaka Hill and we'll continue spending money on things like sailing events instead.

 

I'd cheerfully see a toll tunnel there (a common overseas solution) for which I would happily pay $10 each way if it was quick and unaffected by geology so regularly. 






2373 posts

Uber Geek
+1 received by user: 504


  Reply # 1814313 7-Jul-2017 11:43
Send private message quote this post

remember crossing the gorge in the 70's, no barriers on the sides, one lane most of way because of slips and work being done , i thought it was exciting , my father hated  it lol


Onward
10959 posts

Uber Geek
+1 received by user: 4808

Trusted
Subscriber

  Reply # 1814315 7-Jul-2017 11:44
Send private message quote this post

Geektastic:

 

WyleECoyoteNZ:

 

The answer\solution isn't cheap whatever way you look at it.

 

Either requires a tunnel the entire length or

 

A open tunnel you see in the like of the swiss alps, the big concrete things that are open on the outside, something like this

 

 

 

 

Rock/Snow fall protection. Yes. However you do need to be sure that the ground underneath the road and to which the rock tunnel is attached won't slide away beneath you. As long as the risk is all above you then that should work.

 

 

 

I can't see anything happening. It'll just continue to be another pinch point on the road network, like the Rimutaka Hill and we'll continue spending money on things like sailing events instead.

 

I'd cheerfully see a toll tunnel there (a common overseas solution) for which I would happily pay $10 each way if it was quick and unaffected by geology so regularly. 

 

 

 

 

The Rimutaka Road is a odd one, a few years back a survey was taken of the Wairarapa locals and the majority did not want a tunnel as they felt it would change the Wairarapa and it would lose its unique character.





Mike
Retired IT Manager. 
The views stated in my posts are my personal views and not that of any other organisation.

 

 It's our only home, lets clean it up then...

 

Take My Advice, Pull Down Your Pants And Slide On The Ice!

 

 


Onward
10959 posts

Uber Geek
+1 received by user: 4808

Trusted
Subscriber

  Reply # 1814317 7-Jul-2017 11:45
Send private message quote this post

vexxxboy:

 

remember crossing the gorge in the 70's, no barriers on the sides, one lane most of way because of slips and work being done , i thought it was exciting , my father hated  it lol

 

 

 

 

yep remember that, even now (until it closed) I felt like I was running a gauntlet every time I drove through there. 





Mike
Retired IT Manager. 
The views stated in my posts are my personal views and not that of any other organisation.

 

 It's our only home, lets clean it up then...

 

Take My Advice, Pull Down Your Pants And Slide On The Ice!

 

 


133 posts

Master Geek
+1 received by user: 35


  Reply # 1814318 7-Jul-2017 11:46
One person supports this post
Send private message quote this post

There is a very similar solution through the Arthur's pass - overhead rock protection in some places, and a viaduct that puts the road out of harms way - I wonder if they could replicate that through the gorge?


1974 posts

Uber Geek
+1 received by user: 937


  Reply # 1814320 7-Jul-2017 11:54
2 people support this post
Send private message quote this post

Another alternative is to do what they did in Arthurs Pass (and what legend has it the US Army wanted to do during WW2)... build essentially a "bridge" down the length of the gorge, out in the middle of it somewhat, so that any slips go underneath the bridge.

 

Maybe they should look at closing the railway on the North side of the gorge and putting the road there? That would be cheaper than building a new road alongside the railway. My understanding is that the North side of the Gorge is different geology from the South; the North side is solid rock, whereas the South is crumbly and broken.

 

Or they could do what they do in Switzerland... drive cars onto flatbed railway wagons, to be pulled through the Gorge in a train. Could have loading/unloading ramps at Woodville and Ashhurst so the rail journey would be short and could be run often.

 

 


3864 posts

Uber Geek
+1 received by user: 1936

Trusted
Subscriber

  Reply # 1814359 7-Jul-2017 13:06
Send private message quote this post

Cost of a tunnel to bypass the gorge is conservatively estimated at $1.8 billion. That's more than the cost of the entire waterview connection in Auckland, which was $1.4 billion.

 

I measured it and the shortest point to point route under the Tararuas (adjacent to the gorge) is 5.0 km. That would be going into the ranges just after where SH3 joins SH57 and coming out about where the existing bridge crosses the Manawatu river at the Woodville end. That's assuming the geological conditions at that area are even suitable for a tunnel.

 

The waterview tunnels are now the longest road tunnels in NZ (at 2.5 km long).

 

 




9535 posts

Uber Geek
+1 received by user: 2886

Trusted
Subscriber

  Reply # 1815620 7-Jul-2017 18:29
3 people support this post
Send private message quote this post

MikeB4:

 

Geektastic:

 

WyleECoyoteNZ:

 

The answer\solution isn't cheap whatever way you look at it.

 

Either requires a tunnel the entire length or

 

A open tunnel you see in the like of the swiss alps, the big concrete things that are open on the outside, something like this

 

 

 

 

Rock/Snow fall protection. Yes. However you do need to be sure that the ground underneath the road and to which the rock tunnel is attached won't slide away beneath you. As long as the risk is all above you then that should work.

 

 

 

I can't see anything happening. It'll just continue to be another pinch point on the road network, like the Rimutaka Hill and we'll continue spending money on things like sailing events instead.

 

I'd cheerfully see a toll tunnel there (a common overseas solution) for which I would happily pay $10 each way if it was quick and unaffected by geology so regularly. 

 

 

 

 

The Rimutaka Road is a odd one, a few years back a survey was taken of the Wairarapa locals and the majority did not want a tunnel as they felt it would change the Wairarapa and it would lose its unique character.

 

 

 

 

Yes. That's a very valid reason for hamstringing one of your national highways. Parochial f***wits!






3864 posts

Uber Geek
+1 received by user: 1936

Trusted
Subscriber

  Reply # 1815622 7-Jul-2017 18:36
Send private message quote this post

BTW, those stories of what the Yanks proposed to do transport wise during WW2 appear to be all urban myths. There are three versions of the story that I've heard being bandied around: a bridge all the way up the gorge straddling the river, a different road over the top, a tunnel.


13109 posts

Uber Geek
+1 received by user: 1535


  Reply # 1815625 7-Jul-2017 18:39
Send private message quote this post

Weren't the yanks also going to build transmission gully. At least that one is actually being built, which is a huge achievement considering all the delays.


3864 posts

Uber Geek
+1 received by user: 1936

Trusted
Subscriber

  Reply # 1815630 7-Jul-2017 18:49
Send private message quote this post

This is where the current big slip has occurred. Google street view , just to the right of the gabion rock wall. There was a big slip in 1995 that closed the gorge for about ten weeks. They built that wall there to stabalise it.


Aussie
3814 posts

Uber Geek
+1 received by user: 968

Trusted
Subscriber

  Reply # 1815654 7-Jul-2017 19:39
Send private message quote this post

DarthKermit:

 

This is where the current big slip has occurred. Google street view , just to the right of the gabion rock wall. There was a big slip in 1995 that closed the gorge for about ten weeks. They built that wall there to stabalise it.

 

 

 

 

Only 10 weeks?? ;p

 

 

 

I hated the closure in 2011(?).

 

Had to go via Rimutaka or Saddle Rd.. Totally sucked in a truck at 3am in winter, and even worse coming back in winter and traffic.


3864 posts

Uber Geek
+1 received by user: 1936

Trusted
Subscriber

  Reply # 1815659 7-Jul-2017 19:45
One person supports this post
Send private message quote this post

Yeah I bet. I've never been over the Rimutaka hill road, but I've seen it on google street view. It's as twisty as hell.

 

Almost all of the Saddle road has been widened now. It's not up to full state highway standards, but maybe it could be made so if the gorge is a goner.

 

In a 100 or even a 1000 years, no doubt the gorge will still be slipping away. It's just the nature of the crumbly rocks there.


 1 | 2 | 3
View this topic in a long page with up to 500 replies per page Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Symantec protects data everywhere with Information Centric Security
Posted 21-Sep-2017 15:33


FUJIFILM introduces X-E3 mirrorless camera with wireless connectivity
Posted 18-Sep-2017 13:53


Vodafone announces new plans with bigger data bundles
Posted 15-Sep-2017 10:51


Skinny launches phone with support for te reo Maori
Posted 14-Sep-2017 08:39


If Vodafone dropping mail worries you, you’re doing online wrong
Posted 11-Sep-2017 13:54


Vodafone New Zealand deploy live 400 gigabit system
Posted 11-Sep-2017 11:07


OPPO camera phones now available at PB Tech
Posted 11-Sep-2017 09:56


Norton Wi-Fi Privacy — Easy, flawed VPN
Posted 11-Sep-2017 09:48


Lenovo reveals new ThinkPad A Series
Posted 8-Sep-2017 14:37


Huawei passes Apple for the first time to capture the second spot globally
Posted 8-Sep-2017 10:45


Vodafone initiative enhances te reo Maori pronunciation on Google Maps
Posted 8-Sep-2017 10:40


Voyager Internet expand local internet phone services company with Conversant acquisition
Posted 6-Sep-2017 18:27


NOW Expands in to Tauranga
Posted 5-Sep-2017 18:16


Windows 10 Fall Creators Update coming Oct. 17
Posted 4-Sep-2017 14:10


Garmin introduce Garmin vivoactive 3
Posted 1-Sep-2017 18:38



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.