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'One of China's hardest tunnel projects' completed after 12 years
Apr 28, 2020
CGTN

The Dazhu Mountain Railway Tunnel, dubbed as "one of China's hardest tunnel projects," was completed on Tuesday after 12 years of work. The tunnel is a key part of a railway that connects Dali City and Ruili City in southwest China's Yunnan Province.
Salute and congratulation to the workers for this railway !!

New China TV
A new railway section in China's Yunnan Province has been put into operation. The Dali-Baoshan rail line is seen as a major breakthrough in the construction of the China-Myanmar international railway corridor. #GLOBALink
 
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【高速飞车来了!🚀可实现最大时速1000km/h超高速“近地飞行”】5月24日,高速飞车山西省实验室揭牌暨大同(阳高)试验线工程开工奠基活动在山西省大同市举行。​
超高速低真空管道磁浮交通系统(高速飞车)是利用低真空管道大幅减少空气阻力和噪声,利用磁悬浮消除摩擦阻力,利用电磁推进提供全程可控加减速,实现最大时速1000km/h超高速“近地飞行”。航天科工基于掌握的航天先进技术基础,于2017年正式布局并积极推进高速飞车工程,几年来扎实推进关键技术攻关,取得了阶段性的进展。中共中央国务院印发的《交通强国建设纲要》中,已将低真空管(隧)道高速列车列入技术储备研发。​
高速飞车项目得到了山西省委省政府的高度重视和大力支持。《中共山西省委关于制定国民经济和社会发展第十四个五年规划和二〇三五年远景目标的建议》中明确提出,“构建现代综合交通运输体系,加快山西转型综合改革示范区磁浮项目建设;超前规划布局新基建,强化布局超高速低真空磁悬浮电磁推进科学实验设施等重大科技基础设施。”​
大同(阳高)试验线作为超高速低真空磁悬浮电磁推进科学实验设施的重要组成部分,由高速飞车山西省实验室承担建设,中国航天科工三院、中北大学、山西建投等国内优势技术单位联合参与,是我国首条开工建设的超高速低真空管道磁浮交通全尺寸试验线,对建设交通强国、科技强国具有重要的里程碑意义。@国资小新 @中国航天报 @微博政务 @微博航天 @交通发布 @央广军事 @头条新闻 @山西发布

China Aerospace Science and Industry Corp.
Today at 09:18 from 360 Safe Browser

[The high speed flight train is coming! 🚀Able to achieve ultra-high-speed "flying near the ground" at a maximum speed of 1000km/h]

On May 24, the unveiling of Shanxi Provincial Laboratory of high speed flight rail cum groundbreaking ceremony for the Datong (Yanggao) test line project was held in Datong City, Shanxi Province.

The ultra-high-speed near-vacuum tube maglev transportation system (high-speed flight rail) uses near-vacuum tube to greatly reduce air resistance and noise, uses magnetic levitation to eliminate frictional resistance, and uses electromagnetic propulsion to provide full-range controllable acceleration and deceleration, achieving a maximum speed of 1000km/h "flying near the ground". Based on the advanced aerospace technology foundation it has mastered, China Aerospace Science and Industry Corp. (CASIC) officially deployed and actively promoted the high-speed flight rail project in 2017. Over the past few years, it has made solid progress in key technology research and has made phased progress. In the "Outline for Building a Powerful Transportation Country" issued by the Central Committee of the Communist Party of China and the State Council, the near-vacuum tube (tunnel) high-speed rail has been included in the technical research and development reserve category.

The high-speed flight rail project has received great attention and strong support from the Shanxi Provincial Party Committee and Provincial Government. The "Proposal of the CPC Shanxi Provincial Committee on Formulating the Fourteenth Five-Year Plan for National Economic and Social Development and Long-Term Goals for 2035" clearly stated that "Building a modern comprehensive transportation system; Speed up the construction of the maglev project in Shanxi's Transformation and Comprehensive Reform Demonstration Zone; Advance planning and layout of new infrastructure and strengthening the construction of scientific experiment facilities for ultra-high-speed near-vacuum magnetic levitation electromagnetic propulsion and other major technological infrastructure. "

The Datong (Yanggao) test line is an important part of the scientific experiment facility for ultra-high-speed near-vacuum magnetic levitation electromagnetic propulsion. The construction is undertaken by the Shanxi Provincial Laboratory of high speed flight train with jointly participation by the third academy of CASIC, North University of China, Shanxi Construction Investment Group and other domestic technical entities. It is the first full-scale test line for ultra-high-speed near-vacuum tube maglev transportation in China, which marks an important milestone for building a powerful nation in transportation technology.

China have successfully carried out a systematic test on a cutting-edge transportation system involving a high-speed maglev train running in a low vacuum pipeline.
 
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The new Chengdu-Kunming railway in southwest China will start all-line operation on Dec 26 with the Emei-Mianning section of the railway opening to traffic. With a design speed of 160 kph, the 915-km railway will cut the travel time between Chengdu and Kunming to 7.5 hours.

A railway with lots of history.
China, 50 years ago and 50 years later. Workers watch the old chengdu-kunming railway( 1970) in New chengdu-kunming railway.
 
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