Three Gorges Dam can survive for 500 yrs, engineer |
文章来源： 文章作者： 发布时间：2007-12-06 08:25 字体： [ 大 中 小] 进入论坛 |
(单词翻译:双击或拖选)
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Chinanews, Hong Kong, Dec. 6 – Since China built the Three Gorges1 Dam with high-grade concrete, it might extend the service life of the dam to five hundred years instead of the 300 years as engineers once expected, said Wang Dianchang, senior engineer at the State Council Three Gorges Dam Construction Committee, the Hong Kong-based Ta Kung Pao reported.
The service life of the dam depends largely on the materials that were used to build it. After completion, minor2 maintenance work might be done at some parts of the dam to make it more durable3. However, this will not affect the general service life of the dam. Based on the current situation, we expect that the dam can be used for more than five hundred years, Wang said.
Before building the dam, engineers gave full consideration to the choice of the site of the dam and the site's geological conditions. The construction process also went on smoothly4. All this will help greatly to prolong the dam's service life. The Three Gorges Dam is built on granite5 rocks and every square centimeter of such rock can sustain 1,000 kilograms of pressure on it. This means that the Three Gorges Dam is built on a very firm basis, said Zhang Shuguang, deputy chief engineer at the China Three Gorges Project Corporation.
At the same time, it should be noted6 that no big earthquakes have ever occurred near the dam's area. According to experts' calculation, none of the earthquakes that may occur in the Three Gorges Area will be stronger than level-6 on the Richter Scale and the dam is designed to survive level-7 earthquakes on the Richter Scale. This can ensure that the dam can survive even the strongest earthquake that might possibly occur in the area.
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1
gorges
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| n.山峡，峡谷( gorge的名词复数 )；咽喉v.（用食物把自己）塞饱，填饱( gorge的第三人称单数 )；作呕 |
参考例句： |
- The explorers were confronted with gorges(that were)almost impassable and rivers(that were)often unfordable. 探险人员面临着几乎是无路可通的峡谷和常常是无法渡过的河流。 来自辞典例句
- We visited the Yangtse Gorges last summer. 去年夏天我们游历了长江三峡。 来自辞典例句
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2
minor
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| adj.较小(少)的，较次要的；n.辅修学科；vi.辅修 |
参考例句： |
- The young actor was given a minor part in the new play.年轻的男演员在这出新戏里被分派担任一个小角色。
- I gave him a minor share of my wealth.我把小部分财产给了他。
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3
durable
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| adj.持久的，耐久的 |
参考例句： |
- This raincoat is made of very durable material.这件雨衣是用非常耐用的料子做的。
- They frequently require more major durable purchases.他们经常需要购买耐用消费品。
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4
smoothly
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| adv.平滑地，顺利地，流利地，流畅地 |
参考例句： |
- The workmen are very cooperative,so the work goes on smoothly.工人们十分合作，所以工作进展顺利。
- Just change one or two words and the sentence will read smoothly.这句话只要动一两个字就顺了。
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granite
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| adj.花岗岩，花岗石 |
参考例句： |
- They squared a block of granite.他们把一块花岗岩加工成四方形。
- The granite overlies the older rocks.花岗岩躺在磨损的岩石上面。
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noted
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| adj.著名的，知名的 |
参考例句： |
- The local hotel is noted for its good table.当地的那家酒店以餐食精美而著称。
- Jim is noted for arriving late for work.吉姆上班迟到出了名。
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