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View Full Version : Libya's fossil water project, bringing rivers to the desert



scarletghoul
23rd November 2010, 22:02
This has of course been going on for ages, but it's just so epic I think we should have a discussion on it. There is huge amounts of water deep deep below the Sahara desert. Since the revolution and Libya's industrialisation, the government has been building an absolutely huge system to bring this water up to the surface. If this succeeds (it has so far) the desert could be transformed into prosperous land with plants and so on.


The Man Made River

Libya

http://www.galen-frysinger.com/North%20Africa/libya08.jpg

Libya's Great Man-Made River Project
The 1st of September marks the anniversary of the opening of the major stage of Libya's Great Man-Made River Project. This incredibly huge and successful water scheme is virtually unknown in the West, yet it rivals and even surpasses all our greatest development projects. The leader of the so-called advanced countries, the United States of America cannot bring itself to acknowledge Libya's Great Man-Made River. The West refuses to recognize that a small country, with a population no more than four million, can construct anything so large without borrowing a single cent from the international banks.
Up until recently, Libya's supply of water came from underground aquifers or desalination plants on the coast. Water derived from desalination or aquifers near the coast was of poor quality and sometimes undrinkable. This problem also meant that little water was available to irrigate land for agriculture, which is vital in this largely desert country.

http://www.galen-frysinger.com/North%20Africa/libya10.jpg

digger used to create the trench
In the 1960s during oil exploration deep in the southern Libyan desert, vast reservoirs of high quality water were discovered in the form of aquifers. The most important of these aquifers, or water bearing rock strata, were laid down during a geological time when the Mediterranean sea flowed southward to the foot of the Tibesti mountains, that are situated on Libya's border with Chad. During that period the Mediterranean sea frequently varied in level, as a result of which, various sedimentary deposits were formed.
Geological activity caused the up thrust of mountainous formations (Jabal Nefussa and Jabal Al Akhdar) and the associated downward movement formed natural underground basins. Between 38,000 and 10,000 years ago the climate of North Africa was temperate, during which time there was considerable rainfall in Libya. The excess rainfall infiltrated into porous sandstone and was trapped between layers, forming reservoirs of underground fresh-water.
In Libya there are four major underground basins, these being the Kufra basin, the Sirt basin, the Morzuk basin and the Hamada basin, the first three of which contain combined reserves of 35,000 cubic kilometres of water. These vast reserves offer almost unlimited amounts of water for the Libyan people.

http://www.galen-frysinger.com/North%20Africa/libya09.jpg

one of the reservoirs
The people of Libya under the guidance of their leader, Colonel Muammar Al Qadhafi, initiated a series of scientific studies on the possibility of accessing this vast ocean of fresh water. Early consideration was given to developing new agricultural projects close to the sources of the water, in the desert. However, it was realized that on the scale required to provide products for self sufficiency, a very large infrastructure organization would be required. In addition to this, a major redistribution of the population from the coastal belt would be necessary. The alternative was to 'bring the water to the people'.
In October 1983, the Great Man-made River Authority was created and invested with the responsibility of taking water from the aquifers in the south, and conveying it by the most economical and practical means for use, predominantly for irrigation, in the Libyan coastal belt.
By 1996 the Great Man-Made River Project had reached one of its final stages, the gushing forth of sweet unpolluted water to the homes and gardens of the citizens of Libya's capital Tripoli. Louis Farrakhan, who took part in the opening ceremony of this important stage of the project, described the Great Man-Made River as "another miracle in the desert." Speaking at the inauguration ceremony to an audience that included Libyans and many foreign guests, Col. Qadhafi said the project "was the biggest answer to America... who accuse us of being concerned with terrorism."
The Great Man-Made River, as the largest water transport project ever undertaken, has been described as the "eighth wonder of the world". It carries more than five million cubic metres of water per day across the desert to coastal areas, vastly increasing the amount of arable land. The total cost of the huge project is expected to exceed $25 billion (US).

http://www.galen-frysinger.com/North%20Africa/libya12.jpg

pipes on the way to extend the system
Consisting of a network of pipes buried underground to eliminate evaporation, four meters in diameter, the project extends for four thousand kilometres far deep into the desert. All material is locally engineered and manufactured. Underground water is pumped from 270 wells hundreds of meters deep into reservoirs that feed the network. The cost of one cubic meter of water equals 35 cents. The cubic meter of desalinized water is $3.75. Scientists estimate the amount of water to be equivalent to the flow of 200 years of water in the Nile River.
The goal of the Libyan Arab people, embodied in the Great Man-Made River project, is to make Libya a source of agricultural abundance, capable of producing adequate food and water to supply its own needs and to share with neighboring countries. In short, the River is literally Libya's 'meal ticket' to self-sufficiency.
Each pipe of the river project is buried in a trench approximately seven metres deep, excavation of which requires the removal of some 100,000 cubic metres of material each working day. Excavation is carried out by large hydraulic excavators fitted with 7.6 cubic metre buckets. Once the trench has been prepared, prestressed concrete cylinder pipes 7.5 metres long and weighing up to 80 tons are brought to the site using a fleet of some 128 specially designed transporters.

http://www.galen-frysinger.com/North%20Africa/libya13.jpg

pipe being delivered
Pipes are placed in the trench using large cranes, capable of lifting up to 450 tons, and joined to the already laid pipe by pushing them into place with a bulldozer. The joint between the pipes is sealed using a rubber ring seal installed in a special groove on the end of the pipe and this joint itself sealed, both inside and outside the pipe, with cement grout. The trench is then backfilled, covering the pipe with a minimum of 2 metres of material and restoring the desert surface.
After backfilling, the pipe is adequately supported by the soil and can be hydrostatically tested. This requires the fitting of specially designed steel bulkheads at each end of the test section and filling of the line with water from wells drilled adjacent to the conveyance. Up to 8 kilometre lengths of the conveyance are tested at a time, and, after allowing adequate time for the concrete lining of the pipe to absorb water, the line is pressurised to test both the pipe and its joints.

http://www.galen-frysinger.com/North%20Africa/libya11.jpg

large hydraulic excavator
The plant, equipment and logistical support for this project are also on a vast scale. Some 10,000 people and 4,500 pieces of equipment are employed on the work. Two thousand five hundred tons of cement per day are supplied by the Libyan Cement Company and hauled in a fleet of 127 cement tankers to the pipe plants at Brega and Sarir.
The Great Man-Made River Project is bringing water to the people and providing water for municipal, industrial and agricultural use. The strategy of the responsible Libyan authority is aimed at increasing both crop and livestock production to a level that achieves the highest possible rate of self-sufficiency and reduces dependence on imports from foreign markets to the lowest possible level. It also aims at increasing the productive capabilities of the labor force and of the capital investments in the sector, and at producing raw materials for food processing industries.

http://www.galen-frysinger.com/North%20Africa/libya14.jpg

land of desert and camels
According to the writer Ali Baghdadi, "the river is a new lesson and an example in the struggle to achieve self-sufficiency, food security and true independence. No nation that depends on a foreign country to feed its people can be free. The Great River is a triumph against thirst and hunger. It is a defeat against ignorance and backwardness. It reflects the determination of Libyans to resist colonial pressure, to acquire technology, to develop, to improve their lives, and to control their own destiny in accordance with their own free will."

Text from New Dawn Magazine
http://www.galenfrysinger.com/man_made_river_libya.htm

A great example of a planned economy, and what humanity can achieve when we are not confined by private profit or delusions about some untouchable nature. Libya of course is not perfect, but this is undoubtedly an awesome project. If the whole world could operate in this way humanity would be so much better off. We are capable of so much.

ÑóẊîöʼn
23rd November 2010, 23:55
It's completely backwards in my view. It's almost certain that they'll be drawing water our faster than it can replenished.

What they should be doing is using the massive amounts of solar energy bombarding their part of the Sahara to run desalination plants.

scarletghoul
29th December 2010, 06:57
It's completely backwards in my view. It's almost certain that they'll be drawing water our faster than it can replenished.
Why would you need to replenish that water ? It is not being used.

ÑóẊîöʼn
29th December 2010, 18:22
Why would you need to replenish that water ? It is not being used.

My understanding is that the project is drawing on ancient aquifers that take millennia to replenish, if they ever will. It's a criminal waste of effort, time, manpower and materials to expend all that on a massive project that will be running dry in a generation or two. Not to mention painfully short-sighted.

Libya has the potential to harness enormous supplies of solar energy, and possibly wind also. I'm not talking about slapping a few solar panels here and there and erecting DIY windmills in people's gardens. I'm talking about harnessing renewable energy on a truly industrial scale - Libya has the potential - plenty of empty, uninhabited land that gets lots of sunlight, and I imagine the interaction between the Mediterranean sea and the hot desert would provide steady winds in suitable places.

In fact, I'm confident that Libya as well as other North African countries have the potential to become net exporters of renewable energy, something that is going to become increasingly valuable as oil supplies run out and under-investment in fissionable fuels continues on. It's a disappointment to see they've made the wrong move.

pranabjyoti
2nd January 2011, 07:37
I agree with Noxion in this regard. After wall, the amount of fossil water is also limited like fossil fuel. Instead, seawater is unlimited. Using Evaporators to convert seawater into fresh water and using abundant solar energy to pump that fresh water into desert areas would be a far more better solution.
This may be a temporary solution for drawing people towards the desert area, but in future the trend should be changed otherwise it would be devastating in my opinion. There are other ways of making fresh water than digging fossil fresh water. It always bears the danger of depletion.

scarletghoul
2nd January 2011, 08:08
My understanding is that the project is drawing on ancient aquifers that take millennia to replenish, if they ever will. It's a criminal waste of effort, time, manpower and materials to expend all that on a massive project that will be running dry in a generation or two. Not to mention painfully short-sighted.
The Libyan government estimates it will last for four and a half thousand years. Even with huge possible future changes this is clearly not a short sighted project.

I agree with Noxion in this regard. After wall, the amount of fossil water is also limited like fossil fuel. Instead, seawater is unlimited. Using Evaporators to convert seawater into fresh water and using abundant solar energy to pump that fresh water into desert areas would be a far more better solution.
This may be a temporary solution for drawing people towards the desert area, but in future the trend should be changed otherwise it would be devastating in my opinion. There are other ways of making fresh water than digging fossil fresh water. It always bears the danger of depletion.
The water will not run out for 1000s of years. Converting seawater on the scale necessary to sustain a desert country would be a huge waste of money and resources, much worse than pumping water from underground. In fact, a big reason they started tapping into this underground supply was because their aquifers became contaminated with seawater.

Though I agree they should do all they can to use their solar energy, and I dont know if they have any plans for that or not. But the water project is great, and not going to run out for a long long long long time. Much longer than oil etc.

pranabjyoti
2nd January 2011, 13:03
The water will not run out for 1000s of years. Converting seawater on the scale necessary to sustain a desert country would be a huge waste of money and resources, much worse than pumping water from underground. In fact, a big reason they started tapping into this underground supply was because their aquifers became contaminated with seawater.

Though I agree they should do all they can to use their solar energy, and I dont know if they have any plans for that or not. But the water project is great, and not going to run out for a long long long long time. Much longer than oil etc.
I think you have little idea about vacuum evaporation of seawater and converting it into fresh water. By this process, after the set up is completed, just 7 unit (Kwh) is enough to get 1 cubic meter i.e. 1000 kg of water. Moreover, Libya can use its abundant solar power for this purpose. I guess you are thinking about boiling and re-condensation of seawater for freshwater production, but that's an old and very wasteful way. Vacuum evaporation is the future.

Q
2nd January 2011, 13:31
The Libyan government estimates it will last for four and a half thousand years. Even with huge possible future changes this is clearly not a short sighted project.

Even if that is a gross overestimation, say it would only last for 450 years, that's actually a long time indeed. Long enough to come up with any new plans in the far future anyway.

pranabjyoti
2nd January 2011, 14:54
On a programme on Discovery channel, I have seen that this is an unique aspect of Sahara and isn't seen on any other desert in the world. In Sahara, what amount of rain will fall, will sip down underground much before it can be evaporated by the burning sun and thus the amount of water increases. In short, nature itself acts as the conservator of water here for human consumption.

Q
2nd January 2011, 16:27
On a programme on Discovery channel, I have seen that this is an unique aspect of Sahara and isn't seen on any other desert in the world. In Sahara, what amount of rain will fall, will sip down underground much before it can be evaporated by the burning sun and thus the amount of water increases. In short, nature itself acts as the conservator of water here for human consumption.

How much rain does fall in the Sahara? I very much doubt it is as much as it was back when the Sahara knew a temperate climate.

pranabjyoti
3rd January 2011, 01:23
Actually Sahara is a huge area and all the rainfall in this area is collected in those aquifers. Moreover, perhaps the morning due of the humid air coming from Mediterranean are also added to it.