موضوع تعبير عن السد العالى بالانجليزية | السد العالى ويكيبيديا حيث فيما يلي نعرض لكم ابنائنا الطلبه و الطالبات نموذج موضوع تعبير عن السد العالى بالانجليزية | السد العالى ويكيبيديا للصفوف الابتدائيه و الاعداديه و ذلك من خلال الفريق التعليمي لموقع البريمو نيوز الاخباري كما يمكنكم الحصول علي العديد من موضوعات التعبير المميزه من خلال قسم موضوعات التعبير بالموقع .
السد العالى
High Dam
The Upper Aswan Dam or the High Dam is a water dam on the Nile River in southern Egypt, established during the reign of Gamal Abdel Nasser and assisted by the Soviets in its construction.
The dam has greatly helped control the flow of water and mitigate the effects of the Nile flood.
Used to generate electricity in Egypt. The length of the dam is 3600 meters, the base width is 980 meters, the summit width is 40 meters, the height is 111 meters. The size of the dam is 43 million cubic meters of cement, iron and other materials, and can pass through the dam water flow up to 11,000 cubic meters of water per second.
Construction of the dam started in 1960 and the total cost was estimated at $ 1 billion, one-third of which was canceled by the Soviet Union. The dam was built by 400 Soviet experts and completed in 1968. The last 12 generators were installed in 1970 and the dam was officially opened in 1971.
However, the High Dam reduced the fertility of the Nile River and did not compensate the estuaries in Damietta and Ras el Barr with mud, Of 100 years and because of other factors such as global warming and melting of ice in the North and South poles with a negative impact of the ozone layer.
It should be noted here that the first to mention the construction of this dam is the Arab Muslim world Hassan bin Hassan bin Haitham – (born in 965 and died in 1029). Which did not have the opportunity to implement his idea because of the lack of machinery necessary to build in his reign.
Positive effects
One of the positive effects of the dam is that it works to protect Egypt from floods and droughts as Lake Nasser reduces the flow of flood waters and stores them for use in drought years.
The High Dam also expanded the agricultural area as a result of the availability of water and the expansion of reclamation of land and increase the area of agricultural land from 5.5 to 7.9 million acres and also worked on the cultivation of more crops on the ground as a result of the availability of water, which allowed three crops each year and the expansion of crops that need quantities A large amount of water to irrigate such as rice and sugar cane and it has led to the conversion of areas that were planted by the system of pelvic irrigation to the system of permanent irrigation.
He also worked on electricity generation that benefited Egypt economically..
High Dam of the greatest engineering projects in the twentieth century
He said he had surpassed the architectural projects and was chosen by the international body as the largest engineering project of the 20th century. Passing through all the other mega-projects, such as Hong Kong’s Chak Lap Kok Airport and the British-French Manch Tunnel.
The international report confirmed that the High Dam exceeded 122 giant projects in the world. Because of the benefits brought back to the human race, where Egypt provided its strategic balance in the water after the Nile water was one of the most famous flooding in the Mediterranean Sea except for five billion cubic meters are det
