【正文】 得住，逐步能致富”的目標。任務艱巨，但必須要安置好移民，使其生活有所改善，并幫助移民創(chuàng)造生產(chǎn)條件，經(jīng)過 20年艱苦奮斗，富裕起來。做到這些，要化大力氣和資金。 70 萬 kW 水輪發(fā)電機組，首批從國外進口，后來由國內自制。在 155m 水位，可保持川江航運。航道單向年通過能力可由現(xiàn)在的約 1000 萬噸提高到 5000 萬噸，運輸成本可降低 3537%。 三峽工程最直接的經(jīng)濟效益就是發(fā)電。 一、二工程均已如期完成，三期工程也在計劃內施工，升船機攻關在緊張進行中。單級閘室有效尺寸為 280 34 5 m（長寬坎上最小水深），可通過萬噸級船隊。進水口底板高程為 108m。壩址區(qū)河谷開闊，兩岸岸坡較平緩，江中原有一小島（中堡島），具備良好的分期施工導流條件。要知道，海輪延伸到哪里，哪里就會繁榮起來。但絕大多數(shù)外國媒體和學者認為，就像“中國正在走自己的路”一樣，三 峽工程代表著“中國根據(jù)自己的國情確定的能源發(fā)展道路”。 principles and policies, insist the country supports, the policy is favourable, each side supports, principle of relying on one39。 Flood kilometers of highways, 92,200 kilowatts of power stations。 The total length of the reservoir is more than 600 kilometers, width is kilometers on average。 The Three Ges Projects Three Ges project to change the world39。 Form hole mouth is 8 meter wide, overflow weir is 158 meters, form hole and deep hole adopt nose bank choose, flow way go on and can disappear. Dam section lies in and releases floodwater on a section of both sides of the dam in the hydropower station, there are hydropower stations that enter water mouth. Enter water mouth baseplate height 108 meters. Pressure input water pipeline for carry person who in charge of, interior diameter , adopt the armored concrete to receive the strength structure. Make and let out flow of 102500 cubic meters per second the most largely in the dam site while checking the flood. 2. power stations The power stations adopt the type after the dam to assign the scheme, consist of two groups of factory buildings on left, right and underground factory building altogether. Install 32 sets of hydroelectric generating set together, 14 factory buildings of left bank among them, 12 factory buildings of right bank, 6 underground factory buildings. The hydraulic turbine, in order to mix the flowing type, the specified capacity of the unit of the unit is 700,000 kilowatts. 3. open up to navigation building The open up to navigation buildings include permanent lock and ship lift (of the the technological public relations, the steel cable that plans to be replaced with spiral pole technology in the original plan promotes technology), lie in the left bank. Permanent lock doubleline five continuous chain of locks. Single grades of floodgate room effective size for 280*34*5, can pass the 10,000 tonclass fleet. The promoting type for single track first grade vertically of the ship lift is designed, it is 120*18* meters to bear the effective size of design of railway carriage or partment of ship, can pass a bination vessel of 3000 tons once. Total weight is 11800 tons to bear the design of railway carriage or partment of ship when operating, it is 6000 newtons to always promote strength. Three. The major project amount and arranges in time limit The subject building of the project and major project amount of the water conservancy diversion project are: Excavate 102,830,000 cubic meters in cubic metre of earth and stone, fill out and build 31,980,000 cubic meters in cubic metre of earth and stone, concrete builds 27,940,000 cubic meters, 463,000 tons of reinforcing bars, make and fit 32 with hydroelectric generating set. All project construction tasks were divided into three stages and finished, all time limit was 17 years. The first stage (19931997 year) is preparation of construction and the first stage of the project, it takes 5 years to construct, regard realizing damming in the great river as the sign. The second stage (19982021 year) is the second stage, it takes 6 years to construct, lock as initial conservation storage of the reservoir, the first batch of aircrews generate electricity and is open up to navigation with the permanent lock as. The third stage (20212021 year) is the third stage of the project, it takes 6 years to construct, regard realizing the sign all aircrews generate electricity and finish building with all of multipurpose project as. One, two project finish as scheduled already, the third stage of the project in inside the plan to construct too, ship lift tackle key problems of not going on intensely. Four. Enormous benefit of the Three Ges Projects The Three Ges Projects is the greatest water control project in China ,also in the world , it is the key project in controlling and developing the Changjiang River. The normal water storage level of the Three Ges Projects reservoir is 175 meters, installed capacity is 39,300 million cubic meters。 Flood or flood 1599 of industrial and mining enterprises that influence, reservoir flood line own cultivated land (suck the ground of mandarin orange) 24,500 hectares in mon。s policy of the exploration, is a great reform of the reservoir immigrants of our country. Policy this, and reservoir area of Three Ges immigrant put forward at the foundation of pilot project eight year in experience and lessons that immigrant work since new China set up of summarizing. At the beginning of reservoir immigrants in Sanxia, carry out exploration immigrants39。從十幾年前中國開始討論建設三峽水電站開始，國外也對三峽建設帶來的安全，特別是環(huán)境問題發(fā)出了擔心的聲音，直到現(xiàn)在三峽大即即將建成，一些人仍懷有疑問。此外，它還可以方便 3000噸的海輪深入中國西部。 一、壩址及基本樞紐布置 三峽工程大壩壩址選定在宜昌 市三斗坪，在已建成的葛洲壩水利樞紐上游約40km 處。 電站壩段位于泄洪壩段兩側，設有電站進水口。 永久船閘為雙線五級連續(xù)梯級船閘。 第三階段（ 20212021 年）為三期工程，施工需 6 年，以實現(xiàn)全部機組發(fā)電和樞紐工程全部完建為標志。遇千年一遇的特大洪水，可配合荊江分洪等分蓄洪工程的運用，防止荊江河段兩岸發(fā)生干堤潰決的毀滅性災害，減輕中下游洪災損失和對武漢市的洪水威脅，并可為洞庭湖區(qū)的治理創(chuàng)造條件。 三峽水庫將顯著改善宜昌至重慶 660 公里的長江航道，萬噸級船隊可直 達重慶港。次年汛前庫水位降至 155m 高程，利用蓄水發(fā)電。局部地基穩(wěn)定問題經(jīng)過處理，能滿足安全要求。應該把不利減少到最低程度，主要是水庫移民要植樹種草，修建梯田，保護生態(tài)環(huán)境，不要求糧食自給?？紤]到建設期間內的人口增長和二次搬遷等其它因素，三峽水庫移民安置的動態(tài)總人口將達到 113 萬人。這一方針，是在總結新中國建立以來移民工作的經(jīng)驗教訓和三峽庫區(qū)八年移民試點的基礎上提出來的。用發(fā)展經(jīng)濟學的觀點看，實施開發(fā)性移民的過程，就是庫區(qū)經(jīng)濟擴張的過程。