久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

USEUROPEAFRICAASIA 中文雙語Fran?ais
Business
Home / Business / Companies

Three Gorges super ship lift boosts efficiency, safety

By YANG ZIMAN and HU YUANYUAN in Hubei | China Daily | Updated: 2016-11-24 08:20

The massive new ship lift being used at the Three Gorges Dam on the Yangtze River, the biggest and highest one in the world, has greatly boosted efficiency and safety for ships going through the dam, said the head of its operations.

The ship lift, which began functioning in September, can elevate vessels up to 3,000 metric tons up or down a vertical distance of 113 meters. The ship chamber itself has a pool of water 120 meters long by 18 meters wide and 3.5 meters deep. The lift was built to accommodate mostly small and medium-sized vessels, with bigger ships still using the dam's adjacent five-tiered lock system to navigate the waterway.

"It only takes about 40 minutes for a ship to go through the dam compared with around three hours in the past," said Wu Xiaoyun, director of the ship lifter program and chief of the electromechanical engineering bureau of China Three Gorges Corp.

Before the completion of the ship lift, all the ships had to use the five levels of ship locks.

"Ship locks were like stairs. Walking up or down stairs is certainly much slower than taking the lift," Wu said.

The ship lift is the biggest in the world with maximum lifting weight of 15,500 tons and maximum height of 113 meters.

The new ship lift entered the second phase of its trials when it began operating 24 hours a day in November, following its successful first tests in September.

"Apart from faster speed, the ship lift is also safer. It's very dangerous if the ship catches fire in ship locks. But on the lift, with its open space, the chance for such a situation developing is much smaller," said Wu.

He said one of the biggest challenges in building the ship lift was a potential swelling of the cement towers under the heat of the sun, which could tilt the lift.

In order to indicate that a strict balance for a ship was achieved as it was lifted, a coin was placed standing upright on the railing of the vessel during the test run. The coin remained upright throughout the process.

Wu said the balance of a ship could also be effected if the unit's wheels for lifting the ship were to crack. To establish beyond doubt that the wheels are solid, they are subjected to exhaustive testing which concluded that they are good for at least 70 years.

The ship lift was completely made by China-the design, the equipment manufacturing, the installation and construction, said Wu.

Contact the writers at yangziman@chinadaily.com.cn and huyuanyuan@chinadaily.com.cn

Most Viewed in 24 Hours
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

    日韩精品一区第一页| 国产美女av一区二区三区| 欧美另类videos死尸| 日韩1区2区3区| 日韩一区二区三区免费看| 国产在线精品不卡| 亚洲欧美在线观看| 精品视频一区三区九区| 免费观看在线色综合| 国产婷婷色一区二区三区 | 国产毛片精品国产一区二区三区| 国产丝袜欧美中文另类| 一本久久a久久精品亚洲| 午夜精品久久久久久久久久| 日韩欧美你懂的| 国产成人综合在线播放| 一区二区三区欧美日韩| 欧美一级国产精品| 成人av午夜影院| 亚洲午夜成aⅴ人片| 精品国产伦一区二区三区观看体验| 国产91精品免费| 亚洲123区在线观看| 久久久亚洲精华液精华液精华液| 91丝袜美腿高跟国产极品老师| 亚洲va国产天堂va久久en| 337p粉嫩大胆色噜噜噜噜亚洲| 92国产精品观看| 美腿丝袜亚洲一区| 成人免费一区二区三区在线观看| 在线电影国产精品| 成人a免费在线看| 视频一区视频二区中文字幕| 欧美经典三级视频一区二区三区| 在线中文字幕一区| 国产一区中文字幕| 伊人婷婷欧美激情| 欧美精品一区二区三区很污很色的| 99久久夜色精品国产网站| 日本成人在线一区| 亚洲欧美经典视频| 精品久久久久久久久久久久久久久| 一本大道久久a久久综合婷婷| 欧美a级一区二区| 国产精品久99| 欧美成人一区二区| 欧美综合欧美视频| 国产传媒一区在线| 日韩制服丝袜先锋影音| 中文字幕一区二区三区av| 日韩一区二区中文字幕| 波波电影院一区二区三区| 美洲天堂一区二卡三卡四卡视频| 亚洲欧美另类在线| 久久久精品tv| 欧美一级高清大全免费观看| 色88888久久久久久影院野外| 国产很黄免费观看久久| 日韩精品乱码av一区二区| 一色屋精品亚洲香蕉网站| 欧美电影免费观看完整版| 欧美日韩专区在线| 成人午夜激情影院| 国产在线精品一区二区| 婷婷综合另类小说色区| 亚洲色图视频网站| 国产日韩欧美精品一区| 精品少妇一区二区三区| 欧美日本视频在线| 日本久久电影网| 成人国产精品免费观看动漫| 国产一区二区三区视频在线播放| 午夜亚洲国产au精品一区二区| 亚洲美女屁股眼交3| 国产精品免费久久久久| 2023国产一二三区日本精品2022| 欧美精品第1页| 精品视频999| 在线欧美日韩精品| 99国产精品久久久久久久久久| 国产精品一二三在| 激情小说欧美图片| 久久国产人妖系列| 秋霞电影网一区二区| 午夜精品福利一区二区蜜股av| 一区二区三区四区五区视频在线观看| 中文字幕欧美激情一区| 久久精品夜夜夜夜久久| 久久久久久久久久久电影| 精品精品国产高清a毛片牛牛 | 美女国产一区二区| 日韩高清一区在线| 日产欧产美韩系列久久99| 亚洲国产成人porn| 亚洲第一成年网| 亚洲第一搞黄网站| 亚洲国产欧美在线| 五月天国产精品| 天天做天天摸天天爽国产一区| 亚洲国产精品久久人人爱蜜臀| 夜夜精品浪潮av一区二区三区| 一区二区三区四区av| 亚洲一二三区不卡| 亚洲va欧美va人人爽午夜| 午夜精品免费在线观看| 天天影视涩香欲综合网| 婷婷综合另类小说色区| 奇米888四色在线精品| 另类成人小视频在线| 极品少妇xxxx偷拍精品少妇| 国产综合久久久久影院| 国产精品一区二区久久不卡| 国产aⅴ综合色| 99视频精品全部免费在线| 久久综合色综合88| 国产午夜亚洲精品羞羞网站| 欧美极品xxx| 亚洲天堂a在线| 一区二区三区精品视频在线| 亚洲图片有声小说| 日本aⅴ免费视频一区二区三区| 久久精品国产在热久久| 国产激情一区二区三区| 99久久精品费精品国产一区二区| 91免费看视频| 欧美人牲a欧美精品| 精品少妇一区二区三区免费观看| 26uuu精品一区二区在线观看| 国产日韩欧美电影| 亚洲视频在线观看三级| 亚洲午夜激情av| 免费观看30秒视频久久| 国产精品1区2区3区| 91年精品国产| 91精品国产免费| 久久久91精品国产一区二区三区| 国产精品久久久久久久浪潮网站| 亚洲美女视频在线观看| 日韩成人一区二区三区在线观看| 久热成人在线视频| 成人av免费网站| 欧美日韩在线播放一区| 欧美精品一区二区三| 亚洲欧洲精品天堂一级 | 久久爱另类一区二区小说| 成人免费观看视频| 欧美日韩激情在线| www激情久久| 一区二区三区欧美激情| 卡一卡二国产精品 | 国产一区二区调教| 97se亚洲国产综合在线| 欧美一区二区三区视频免费 | 2024国产精品视频| 亚洲精品国产一区二区三区四区在线| 日本欧美肥老太交大片| 成人黄色综合网站| 91精品国产综合久久精品| 久久久99精品免费观看不卡| 亚洲一区欧美一区| 国模大尺度一区二区三区| 色综合天天综合给合国产| 日韩天堂在线观看| 亚洲图片激情小说| 久久av老司机精品网站导航| 94-欧美-setu| xnxx国产精品| 亚洲午夜久久久久中文字幕久| 国产伦精品一区二区三区免费迷| 欧美色综合久久| 国产亚洲污的网站| 日本特黄久久久高潮| av资源网一区| 精品福利一区二区三区| 亚洲小说欧美激情另类| 国产成人一级电影| 欧美一区二区大片| 亚洲黄色小视频| 福利一区二区在线| 91精品欧美久久久久久动漫| 亚洲视频狠狠干| 国产综合色产在线精品 | 欧美色电影在线| 国产亚洲一二三区| 日本一不卡视频| 91免费看视频| 日本一区二区成人在线| 伦理电影国产精品| 色婷婷精品久久二区二区蜜臂av| 久久精品亚洲精品国产欧美kt∨| 亚洲妇熟xx妇色黄| av中文字幕一区| 国产欧美一区二区三区在线老狼| 毛片av一区二区三区| 欧美日韩大陆一区二区| 亚洲精品老司机| 99久久久精品免费观看国产蜜| 国产视频视频一区| 国产一区二区网址| 欧美成人a∨高清免费观看|