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Grand Poubara Dam
The Grand Poubara Dam is a gravity dam on the Ogooué River, about south of Franceville in Gabon. The primary purpose of the dam is hydroelectric power generation, and it supports a power station. History The government of Gabon signed a $84 million loan with China in 2008 to finance the construction of the dam. The goal was to develop an alternative power source to the Kongou Falls Dam for the iron ore extraction sites also operated by the Chinese in Belinga. Construction on the project began in November 2008, the river was diverted in November 2010, and the power station was commissioned on 5 August 2013. The dam diverts the river around the Poubara Falls where four Francis turbine-generators are powered. The majority of the dam and power station was funded by the Chinese government and the project was constructed by Sinohydro. Starting in 2015, the Grand Poubara Dam powers Moanda Moanda is one of the largest towns in Gabon, lying on the N3 road in Haut Ogooué. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gabon
Gabon (; ; snq, Ngabu), officially the Gabonese Republic (french: République gabonaise), is a country on the west coast of Central Africa. Located on the equator, it is bordered by Equatorial Guinea to the northwest, Cameroon to the north, the Republic of the Congo on the east and south, and the Gulf of Guinea to the west. It has an area of nearly and its population is estimated at million people. There are coastal plains, mountains (the Cristal Mountains and the Chaillu Massif in the centre), and a savanna in the east. Since its independence from France in 1960, the sovereign state of Gabon has had three presidents. In the 1990s, it introduced a multi-party system and a democratic constitution that aimed for a more transparent electoral process and reformed some governmental institutions. With petroleum and foreign private investment, it has the fourth highest HDI in the region (after Mauritius, Seychelles and South Africa) and the fifth highest GDP per capita (PPP) i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravity Dams
A gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by using only the weight of the material and its resistance against the foundation to oppose the horizontal pressure of water pushing against it. Gravity dams are designed so that each section of the dam is stable and independent of any other dam section. Characteristics Gravity dams generally require stiff rock foundations of high bearing strength (slightly weathered to fresh), although in rare cases, they have been built on soil foundations. The bearing strength of the foundation limits the allowable position of the resultant force, influencing the overall stability. Also, the stiff nature of the gravity dam structure is unforgiving to differential foundation settlement, which can induce cracking of the dam structure. Gravity dams provide some advantages over embankment dams, the main advantage being that they can tolerate minor over-topping flows without damage, as the concre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dams In Gabon
A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams to generate electricity. A dam can also be used to collect or store water which can be evenly distributed between locations. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees (also known as dikes) are used to manage or prevent water flow into specific land regions. The earliest known dam is the Jawa Dam in Jordan, dating to 3,000 BC. The word ''dam'' can be traced back to Middle English, and before that, from Middle Dutch, as seen in the names of many old cities, such as Amsterdam and Rotterdam. History Ancient dams Early dam building took place in Mesopotamia and the Middle East. Da ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Energy Infrastructure Completed In 2013
In physics, energy (from Ancient Greek: ἐνέργεια, ''enérgeia'', “activity”) is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light. Energy is a conserved quantity—the law of conservation of energy states that energy can be converted in form, but not created or destroyed. The unit of measurement for energy in the International System of Units (SI) is the joule (J). Common forms of energy include the kinetic energy of a moving object, the potential energy stored by an object (for instance due to its position in a field), the elastic energy stored in a solid object, chemical energy associated with chemical reactions, the radiant energy carried by electromagnetic radiation, and the internal energy contained within a thermodynamic system. All living organisms constantly take in and release energy. Due to mass–energy equivalence, any object that has mass when ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dams Completed In 2013
A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams to generate electricity. A dam can also be used to collect or store water which can be evenly distributed between locations. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees (also known as dikes) are used to manage or prevent water flow into specific land regions. The earliest known dam is the Jawa Dam in Jordan, dating to 3,000 BC. The word ''dam'' can be traced back to Middle English, and before that, from Middle Dutch, as seen in the names of many old cities, such as Amsterdam and Rotterdam. History Ancient dams Early dam building took place in Mesopotamia and the Middle East. Dams were used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moanda
Moanda is one of the largest towns in Gabon, lying on the N3 road in Haut Ogooué. It is also one of the most important manganese mining towns in the world, under the auspices of the '' Compagnie Minière de l'Ogooué'' (COMILOG), which began mining in 1957. Moanda has a population of around 39,298 inhabitants (2010 est.) and is the second largest city in the Haut Ogooué Region, after Franceville. It is also a border town, lying 100 km away from the border with the Republic of Congo. History Moanda was originally a village lying on the swampy banks of the Miosso River. The discovery and exploitation of manganese in the nearby Bangombe Plateau from 1953 led to the emergence of the city. In 1977 Moanda had an estimated 230 million tons of manganese, some one-fifth of the world's deposits. In 1959, the 75 km COMILOG Cableway to the railway at Mbinda in the Republic of Congo was constructed to export the manganese, but it was eventually closed in 1986 when the Tra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinohydro
Sinohydro (Chinese: 中国水电; long form: 中国水利水电建设集团公司) is a Chinese state-owned hydropower engineering and construction company. In the 2012 Engineering News-Record Top 225 Global Contractors, a ranking by annual revenue, the company is 14th by overall position, and 6th among Chinese construction companies. History The company was founded in 1950, and is based in Beijing, China. International expansion The company has gone on the path of international expansion, becoming a "face of China expansion" across the world by pursuing operations in 55 countries across Asia, Africa, Europe (from the European headquarters of Belgrade, Serbia), North America, and South America. these days Sinohydro is expanding into the Israeli market and constructing a hydro-electric station in Kochav-Hayarden. In the course of international expansion, the company has run into bumps ranging from political risk to environmental controversy. Workers of the affiliated company ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Francis Turbine
The Francis turbine is a type of water turbine. It is an inward-flow reaction turbine that combines radial and axial flow concepts. Francis turbines are the most common water turbine in use today, and can achieve over 95% efficiency. The process of arriving at the modern Francis runner design took from 1848 to approximately 1920. It became known as the Francis turbine around 1920, being named after British-American engineer James B. Francis who in 1848 created a new turbine design. Francis turbines are primarily used for producing electricity. The power output of the electric generators generally ranges from just a few kilowatts up to 1000 MW, though mini-hydro installations may be lower. The best performance is seen when the head height is between . Penstock diameters are between . The speeds of different turbine units range from 70 to 1000 rpm. A wicket gate around the outside of the turbine's rotating runner controls the rate of water flow through the turbine for d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belinga
Belinga is a location in Gabon with as yet unexploited iron ore deposits. These ore deposits extend into neighbouring Cameroon and Congo. Mining The Belinga iron reserves were discovered in 1895.Douglas A. Yates, "Gabon", in ''Africa Yearbook: Politics, Economy and Society South of the Sahara 2006'' (2007), page 257. They are estimated to hold about one billion tons of iron ore. Iron ore mining was expected to start in 2011 but due to a lack of financing the project is currently on hold. Because of slowness in getting the project started, the Chinese rights may be in 2012 given to BHP. Transport A 237 km long railway branch line is proposed branching from Booue to enable these deposits to be exploited. As the tonneages hauled will be greatly increased, this line may also extend to a port at Santa Clara which would extend the railway to 560 km. The town is near the Republic of Congo and Cameroon borders. See also * Iron ore in Africa * Railway stations in G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Franceville
Franceville is one of the four largest cities in Gabon, with a population of 110,568 at the 2013 census. It lies on the Mpassa River and at the end of the Trans-Gabon Railway and the N3 road. It grew from a village named Masuku when Pierre Savorgnan de Brazza chose it to resettle former slaves and renamed it Francheville (meaning "city of the freed") in 1880. The city later came to be called Franceville (meaning "French city"). Overview Brazza founded Franceville on June 13, 1880. The former name was Masuku. As time went on, it became known as Franceville. Features of the town include St Hilaire's Church (built in 1899), a large statue of President Omar Bongo (who was born in Franceville), a primate medical research institute, and a golf course. Its airport is west, in Mvengué. Bongo was buried in Franceville on June 18, 2009. There is a market where numerous items can be purchased, including clothing, fruit and vegetables, electronics, meats, and the market also sells bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron Ore
Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from dark grey, bright yellow, or deep purple to rusty red. The iron is usually found in the form of magnetite (, 72.4% Fe), hematite (, 69.9% Fe), goethite (, 62.9% Fe), limonite (, 55% Fe) or siderite (, 48.2% Fe). Ores containing very high quantities of hematite or magnetite (greater than about 60% iron) are known as "natural ore" or "direct shipping ore", meaning they can be fed directly into iron-making blast furnaces. Iron ore is the raw material used to make pig iron, which is one of the main raw materials to make steel—98% of the mined iron ore is used to make steel. In 2011 the ''Financial Times'' quoted Christopher LaFemina, mining analyst at Barclays Capital, saying that iron ore is "more integral to the global economy than any other commodity, except perhaps oil". Sources Metallic iron is virtually unknown on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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