波多野结衣办公室双飞_制服 丝袜 综合 日韩 欧美_网站永久看片免费_欧美一级片在线免费观看_免费视频91蜜桃_精产国品一区二区三区_97超碰免费在线观看_欧美做受喷浆在线观看_国产熟妇搡bbbb搡bbbb_麻豆精品国产传媒

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Society

Hufengling Tunnel connects, construction continues

By TIAN XUEFEI and ZHOU HUIYING in Harbin | chinadaily.com.cn | Updated: 2017-08-21 18:09

Hufengling Tunnel connects, construction continues

Workers celebrate the rocks on the final section were broken through in Hufengling Tunnel on Aug 20, 2017. [Photo provided to chinadaily.com.cn]

After a loud explosion within the Hufengling Tunnel, 200 kilometers from Harbin, capital of Heilongjiang province, the rocks on the final section were broken through on Sunday.

The tunnel-8,755 meters-on the Harbin-Mudanjiang high-speed rail line is the longest tunnel in regions with temperatures as low as -40C.

During its construction, builders faced a range of difficulties, including the region's extremely low temperatures.

"In order not to delay the project, we are committed to it without interruption even on the coldest days," Wang Zhiqiang, the vice chief engineer of the tunnel project said.

"However, the most serious problem we met was that the concrete construction can't be operated under -5C."

"We built two 4,000-square-meter greenhouses and installed boilers within them to keep the temperature around 10C," Wang told China Daily in an interview.

"The boilers could also provide us warm water to mix the concrete in the greenhouses."

It was about four kilometers away from the greenhouse to the farthest entrance of the tunnel, Wang added.

"We wrapped the tanks with thick quilts during the transportation of the concrete in the cement tankers," he said.

"All the efforts could maintain the temperature."

Wang said he expected the construction of the tunnel to be finished by the middle of October.

The Harbin-Mudanjiang high-speed rail line, designed for trains running at speeds of up to 250 km per hour between Harbin and Mudanjiang, will cut the travel time to about an hour 30 minutes, down from five hours.

Construction of the 300-km line, a high-speed rail line, began in December 2014, and is expected to be put into service by the end of 2018, railway authorities in Harbin said.

Previous 1 2 Next

Editor's picks
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
 
波多野结衣办公室双飞_制服 丝袜 综合 日韩 欧美_网站永久看片免费_欧美一级片在线免费观看_免费视频91蜜桃_精产国品一区二区三区_97超碰免费在线观看_欧美做受喷浆在线观看_国产熟妇搡bbbb搡bbbb_麻豆精品国产传媒
2021中文字幕一区亚洲| 国产成人一区在线| 一区二区免费在线观看视频| 欧美三级一区二区| 亚洲黄色片在线观看| 91网址在线看| 91电影在线观看| 亚洲激情校园春色| 无码人妻一区二区三区精品视频| 欧美日韩午夜在线| 亚洲成人av一区二区| 国产激情视频网站| 日韩欧美一级精品久久| 久久91精品国产91久久小草| 丰满少妇高潮一区二区| 国产亚洲欧美色| 国产999精品久久久久久| 我家有个日本女人| 一区二区三区在线免费| 午夜福利三级理论电影| 日韩一区国产二区欧美三区| 免费欧美高清视频| 人妻互换一区二区激情偷拍| 国产精品理伦片| 91亚洲国产成人精品一区二三| 欧美日韩一区二区三区视频| 午夜亚洲国产au精品一区二区| 精品夜夜澡人妻无码av| 久久婷婷久久一区二区三区| 粉嫩一区二区三区性色av| 日本乱人伦aⅴ精品| 亚洲动漫第一页| 午夜精产品一区二区在线观看的| 国产日韩欧美亚洲| 97久久人人超碰| 欧美一区二区在线看| 国产一区欧美日韩| 91黄视频在线| 男女性色大片免费观看一区二区| 五月婷婷欧美激情| 亚洲女爱视频在线| 国产老熟女伦老熟妇露脸| 久久女同性恋中文字幕| 99热国产精品| 日韩写真欧美这视频| 国产精品夜夜爽| 欧美天天综合网| 看片网站欧美日韩| 一本大道久久a久久综合| 天天色天天爱天天射综合| 国产视频三区四区| 伊人一区二区三区| 日本激情小视频| 亚洲人成影院在线观看| 亚洲欧美色图视频| 国产精品久久久久久久久免费相片| 日本wwwxx| 久久久久久久久岛国免费| 97国产精品videossex| 日韩三区在线观看| 不卡av在线网| 日韩精品影音先锋| 99精品视频在线播放观看| 日韩欧美高清一区| 99久久er热在这里只有精品15 | 久久久久久视频| 天天影视色香欲综合网老头| 在线观看美女av| 男女男精品视频网| 欧美性受xxxx黑人xyx性爽| 精品一区二区在线观看| 欧美日韩综合在线| 国产成人aaa| 欧美成人aa大片| 极品人妻一区二区| 国产区在线观看成人精品| 久久福利小视频| 亚洲日本在线天堂| 黑人と日本人の交わりビデオ| 亚洲不卡av一区二区三区| 极品久久久久久| 精品一区二区三区日韩| 欧美精三区欧美精三区| 成人av在线网| 久久九九影视网| 亚洲av片不卡无码久久| 夜夜嗨av一区二区三区中文字幕| 欧美视频一区二区在线| 天天av天天翘天天综合网| 欧美综合在线视频| 成人在线综合网| 久久影院视频免费| 国产精品无码永久免费不卡| 亚洲一区二区欧美日韩 | 一区二区三国产精华液| 久久爱一区二区| 国内精品伊人久久久久av一坑 | jizz18女人高潮| 日韩成人午夜精品| 欧美蜜桃一区二区三区| 91啪亚洲精品| ...av二区三区久久精品| 网爆门在线观看| 久久99国产精品免费| 欧美一区二区在线视频| 稀缺呦国内精品呦| 亚洲制服丝袜在线| 欧美又粗又大又爽| 99精品1区2区| 亚洲视频一区在线| 日本aⅴ在线观看| 成人午夜av影视| 国产精品伦理一区二区| 精品亚洲乱码一区二区| 国产精品亚洲人在线观看| 久久九九久久九九| 欧美巨胸大乳hitomi| 精品一区二区久久久| 久久亚洲一级片| 婷婷色一区二区三区| 久久99国产精品麻豆| 久久久久九九视频| 貂蝉被到爽流白浆在线观看| 国内精品久久久久影院色| 久久久国产综合精品女国产盗摄| 美国黑人一级大黄| 国产高清无密码一区二区三区| 国产午夜久久久久| 免费中文字幕日韩| 成人av网站在线观看免费| 综合激情网...| 欧美性色欧美a在线播放| 少妇丰满尤物大尺度写真| 亚洲观看高清完整版在线观看| 欧美日韩国产在线播放网站| 污网站免费观看| 欧美aaa在线| 久久精品视频一区二区三区| 中文国语毛片高清视频| 波多野结衣视频一区| 一区二区三区 在线观看视频| 欧美日韩国产美| 免费观看一级一片| 国产中文一区二区三区| 国产精品免费丝袜| 欧美色综合影院| 国产精品无码永久免费不卡| 麻豆国产欧美一区二区三区| 久久久亚洲午夜电影| 一区二区视频免费看| 好吊操视频这里只有精品| 日韩精品亚洲专区| 久久久精品2019中文字幕之3| 玖玖爱这里只有精品| 无码人妻丰满熟妇区毛片蜜桃精品 | 国产一卡二卡三卡四卡| 免费在线视频一区| 国产精品全国免费观看高清 | 亚洲の无码国产の无码步美| 精品一区二区三区久久久| 国产精品欧美经典| 欧美日韩精品一区二区| 免费黄色在线视频| 成人精品视频一区| 亚洲成a天堂v人片| 久久蜜桃av一区精品变态类天堂| 久久免费看少妇高潮v片特黄| 中文字幕在线播放一区二区| 麻豆国产欧美日韩综合精品二区| 国产精品传媒入口麻豆| 欧美日韩成人综合天天影院 | 中文文精品字幕一区二区| 欧美在线制服丝袜| 午夜在线观看一区| 99久久精品久久久久久清纯| 青青草国产精品亚洲专区无| 国产精品久久久久久久久免费相片| 欧美日韩一级片网站| 欧美午夜激情影院| 国产无套精品一区二区三区| 久久99国内精品| 一区二区三区不卡视频| 久久免费视频一区| 欧美视频你懂的| 欧美成人久久久免费播放| 香蕉久久久久久av成人| 国产精品一二三区| 视频在线观看一区二区三区| 国产精品第五页| ww久久中文字幕| 欧美日韩免费一区二区三区| 亚洲色图27p| 波多野结衣福利| 一个人看的视频www| 国产黄色精品视频| 日本美女一区二区三区视频| 亚洲欧美日韩国产中文在线| 久久亚洲私人国产精品va媚药| 欧美日韩精品欧美日韩精品一| 中文字幕在线观看2018|