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 Post subject: Re: Port Phillip Bridge
PostPosted: 11 Feb 2017, 09:15 
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Melbourbes' Bay Bridge - Tide currents info from scuba site.

https://www.scubadoctor.com.au/diving-in-melbourne-currents.htm


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 Post subject: Re: Port Phillip Bridge
PostPosted: 15 Feb 2017, 04:53 
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Melbournes' Bay Bridge - Hydro







Victoria is closing Hazelwood coal power March 2017. This is due to new Labor government state taxes on coal that the owners can't or, don't want to pay. ( as I understand it).

"Yes we can." Replace up to 25% of electricity supply to the worlds largest electricity grid: the eastern seaboard of Australia; from connection of Tasmania and Adelaide thru to Cairns. Clean tidal energy from the 'hour glass' of Port Phillip Bay. Riptide currents focused at The Heads.

And note: water at 832 times the density of wind is a multiple of stronger power.


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 Post subject: Re: Port Phillip Bridge
PostPosted: 15 Feb 2017, 06:23 
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Melbournes' Bay Bridge - comparisons.

58 m clearance below: Westgate Bridge.

Oakland Bay Bridge is also 58m below. It is longer than MBBridge at 7km.

Golden Gate Bridge has 67m clearance below and is operating over 80 years.

Some cruise ships such as Oasis of the Seas need 72 metres clearance above the water line. These would be able to operate out of Port of Hastings but, not Port Phillip Bay.

The Melbourne Bay Bridge would most likely be modelled on the Oresund Bridge which is longer than the Oakland Bay Bridge 7 km vs 8 km for Oresund. MBBridge is around 5-6 km from Observatory Point, Portsea; to Bellarine Hwy, Queenscliff. The widest cable stayed span in this design is about 490 metres and about 57 metres clearance as operating now between Sweden and Denmark.

QM2 and Queen Elizabeth cruise liners would be able to pass under MBBridge.

Any shipping requiring greater clearance would most likely be too big to fit safely through The Heads and will be better routed to the Port of Hastings were there are no bridges.


Last edited by zooloft on 26 Feb 2017, 19:15, edited 2 times in total.

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 Post subject: Re: Port Phillip Bridge
PostPosted: 15 Feb 2017, 23:23 
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Melbournes' Bay Bridge - Gateway to a bigger than perfect tidal lagoon?

"Over 100 MPs call for swift decision on tidal lagoons."
Aaron Morby. U.K.
Constructionenquirer.com Weds. 15th February,2017.

http://www.constructionenquirer.com/2017/02/15/over-100-mps-call-for-swift-decision-on-tidal-lagoons/

https://www.businessgreen.com/bg/news/3004608/over-100-mps-urge-government-to-back-tidal-lagoons

http://www.walesonline.co.uk/business/business-news/mps-call-government-support-swansea-12603148


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 Post subject: Re: Port Phillip Bridge
PostPosted: 19 Feb 2017, 19:47 
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Melbournes' Bay Bridge - Limestone.

Limestone between 1840's - 1920 was excavated and used as bricks for buildings around Sorrento and also exported to Melbourne after 'kiln firing' in up to 17 kilns by 1845 for use as 'whitewash' and cement and mortar for building.

Should the Mornington Peninsula alignment reserve extension be completed through to Melbourne Rd, which extends directly to Hotham Road, there could be a prospect of extending Hotham Road by tunnel under the National Park Reserve all the way to the intersection of Defence Road at the back of the Quarantine Station and the shoulder or, entrance ramp there onto the MBBridge. That would mean that the sealed Defence Road, which leads back to town and the Nepean Hwy will be able to be bypassed.

So, to be clear. It may prove to be surprisingly economic to extract limestone from a tunnel bypass that runs from Observatory Point (where the Queenscliff side can be clearly seen), back to Hotham Road which could be upgraded along with Melbourne Road and onto Mornington Peninsula Link.

The prospect of the tunnel in this situation is doubling as a mining venture in addition to passing under the The Portsea Golf Club to the National Park. Then again; I'm not responsible for planning or, implementing the project. And if you think Mornington Peninsula Link is handling the local traffic for a population of 150,000 then imagine doubling the access to 300,000 greater Geelong area residents with the MBBridge connection taking only 10 minutes to drive across 24/7 with an eTag toll fixed around $10.

Naturally it would likely be cheaper to upgrade Defence Road and join any prospective tunnel at the shortest possible distance of about 3 km from Hotham Road connection rather than all the way under as far Observatory Point. Then again, would limestone be extracted?

Would Melbourne ever be what it is today without The Bolte or, Westgate? Quick and convenient?


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 Post subject: Re: Port Phillip Bridge
PostPosted: 20 Feb 2017, 07:37 
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Melbournes' Bay Bridge - 'Pumped Hydro.'

Why the expense of 'pumping water' to fill a reservoir with the purpose being to generate electricity later? Port Phillip Bay already fills and empties twice daily and is bigger than any of our reservoirs.

Will Port Phillip Bay which is 60 km across from east to west and 60 km across from north to south ever compete with 'pumped hydro' as it fills and empties day and night on high and low tides? Electric power waiting to be drawn from the hydro anchored at each of the MBBridge piers across the narrow neck at the mouth of the bay? Over a cubic kilometre of water weighing one tonne per square metre and 832 times the density of wind power. Base load power, reliable as the rotation of the moon. Power focused where the Melbourne Bay Bridge piers are.

There is three times the distance on MBBridge than China's biggest hydro The Three Gorges Dam. It uses 32 generators to provide half 50 per cent of Shanghai's power and the population there is equivalent to all of Australia at about 25 million people.

Our electricity grid is the worlds biggest from Tasmania to Adelaide and connected to Victoria, NSW ad Queensland. We could supply it with the worlds biggest reliable 'tide current' hydro.


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