China China Infrastructure Developments

[xizhimen]

China's longest underwater highway tunnel opens, the ceiling outfitted with colorful LED lights, designed to prevent driver fatigue
Yong Xiong and Karla Cripps, CNN • Published 4th January 2022

A view of the LED ceiling installed in the 10.79-kilometer tunnel under Lake Taihu.
FeatureChina/AP

(CNN) — After nearly four years of construction, China's longest underwater highway tunnel is now open to vehicle traffic.

At a length of 10.79 kilometers (6.65 miles), the Taihu tunnel stretches under Lake Taihu in eastern China's Jiangsu Province, about 50 kilometers east of Shanghai.
According to government officials in Jiangsu, the tunnel was built at a cost 9.9 billion yuan (about $1.56 billion). Construction began on January 9, 2018.

Over 2 million cubic meters of concrete were used to build the two-way tunnel, which has six lanes and is 17.45 meters wide, reports China's official news agency, Xinhua.
The ceiling of the tunnel has been outfitted with colorful LED lights, designed to prevent driver fatigue.

The tunnel is part of the 43.9-kilometer Changzhou-Wuxi Highway, which opened to the public on December 30, 2021. It provides an alternative expressway for travelers journeying between Shanghai and Nanjing, Jiangsu's capital.

So how does the Taihu tunnel stack up against its global counterparts? The world's longest underway highway tunnel is Norway's 14.3-kilometer twin-road Ryfast tunnel, which runs between the city of Stavanger and the municipality of Strand.

The underwater tunnel portion of the Tokyo Bay Aqua-Line, a vehicle highway that travels under Tokyo Bay, is 9.6 kilometers.

In terms of underwater tunnels in general, though, the top honor goes to the Channel Tunnel, which connects England and France by rail. Its submerged portion runs for 37.9 kilometers, the longest of any underwater tunnel in the world.

China's longest underwater highway tunnel opens | CNN

At a length of 10.79 kilometers (6.65 miles), the Taihu tunnel stretches under Lake Taihu in eastern China's Jiangsu Province, about 50 kilometers east of Shanghai.

www.cnn.com

 

[Blackbeardsgoldfish]

Since we're on the topic, do you or anyone know how far along are they on the Dalian-Yantai tunnel construction?

 

[xizhimen]

Since we're on the topic, do you or anyone know how far along are they on the Dalian-Yantai tunnel construction?

125 km long, The estimated budget is 300 billion yuan (US$43 billion). It's still on paper, the proposed project hasn't started.
Besides, we likes to drive for 125 kilometers in a tunnel...

 

[xizhimen]

World's first 5G smart high-speed railway launched for Beijing 2022 Winter Olympics
14:57, 06-Jan-2022
The world's first express train that incorporates a studio powered by 5G technology has been launched. The train, jointly developed by China Media Group and China Railway, will be put into operation today. The high-speed trains will also provide services for other international media.

 

[xizhimen]

A sneak peek inside the Winter Olympics 5G Express

 

[xizhimen]

Visiting the media carriage on the Winter Olympics 5G Express

 

[Indos]

Look like Summer Olympic in Tokyo was held in less Covid 19 infection environment than this Winter Olympic held by China which will be likely happening during the surge of Omicron infection.

Unpredictable world, I believe we were all very sure that in 2022 Covid 19 will be much less than in 2021, but now we see USA has 1 million infection and also Europe has more infection now then in 2021

 

[xizhimen]

The world's largest pumped-storage power station is officially put into operation-世界规模最大抽水蓄能电站投产发电丰宁
According to reports, Fengning Power Station ranks first in the world in terms of the two core indicators of pumped storage power stations, installed capacity and energy storage capacity, with a total of 12 300,000-kilowatt single-stage reversible pump-turbine generators and motor units installed. The total installed capacity is 3.6 million kilowatts. The full utilization hours of 12 units can reach 10.8 hours, which is the largest in the world with pumped storage power stations. It can store nearly 40 million kilowatt-hours of new energy at one time, and can consume 8.7 billion kilowatt-hours of new energy throughout the year. The world's largest "super power bank".

 

[xizhimen]

China rail network to expand with 3,300km of new tracks in 2022

 

[Jackdaws]

Hopefully the Chinese will not use such trains to continually persecute Uighurs and Tibetans

 

[xizhimen]

Beijing-Hong Kong HIGH-SPEED rails new section starts running, with China's total high speed rails topping 40,000kms​

 

[xizhimen]

China’s Engineering Marvel: Country’s ‘Stunning Lake Tunnel’ – The Longest In China – Opens For Traffic​

BySakshi Tiwari

January 9, 2022

China has recently opened the country’s longest underwater tunnel. The 10.79-km Taihu tunnel beneath Lake Taihu in eastern China’s Jiangsu Province took four years to complete.

Historically, China’s Eastern provinces have seen lesser economic and infrastructure development compared to the rest of the mainland. The tunnel on which the work began on January 9, 2018, cost about $1.56 billion.

According to the team associated with the tunnel’s construction, automatic steel processing equipment and intelligent systems were used to assure zero sewage and dust discharge, said Global Times.

Taihu underwater tunnel (via Twitter)

China’s official news agency, Xinhua, reported that almost 2 million cubic meters of concrete were used to construct the two-way tunnel, which has six lanes and is 17.45 meters wide. The tunnel’s ceiling has been illuminated with colorful LED lights to reduce driver fatigue.

The tunnel is part of the 43.9-kilometer Changzhou-Wuxi Highway, which opened to the public on December 30, 2021. Travelers between Shanghai and Nanjing, Jiangsu’s capital can use it as an alternative expressway.

Ensuring Connectivity & Prosperity​

The Taihu Tunnel will connect various towns and areas in the Yangtze River Delta region, China Daily reported. The Yangtze is the longest river in China.

The tunnel will cut travel time between Mashan and Nanquan, lakefront sub-districts of Wuxi in southern Jiangsu province, by half, and make travel from Wuxi’s urban center to Yixing more convenient.

Wuxi city of the Jiangsu province could be considered a very significant region as it has traditionally been a thriving economic center and is the export hub of rice, silk, and textiles. Additionally, in the past few years, it has also emerged as a trade hub for electrical motors, software, and solar technology parts.

A vehicle runs inside the Taihu tunnel in east China’s Jiangsu Province (via Twitter)

“In the Yangtze River Delta region, it rarely takes more than one hour to travel between a prefecture-level city and a county in its jurisdiction,” said Chen Degang, director of the publicity department at CCCC Third Harbor Engineering Co.

According to him, the underwater tunnel project will link cities such as Shanghai, Nanjing, Suzhou, and Wuxi, boosting the regional economy.

An Engineering Marvel​

The tunnel is 43.2 meters long and is divided into two bores, each measuring 17.45 meters.

According to Li Baozhi, a project manager from CCCC Third Harbor Engineering, the main engineering issue has been seepage-proofing the tunnel, which is as deep as 20 meters into the lake bottom, said China Daily in its previous report.

The contractor built a sophisticated, real-time monitoring system for concrete pouring and invented innovative ways for processing high-quality concrete. The Jiangsu Transportation Engineering Construction Bureau is promoting these procedures as a seepage-proofing guideline for such tunnels across the province.

To protect Taihu Lake’s ecology, the contractor has gone to great lengths to eliminate dust and noise pollution by operating a completely enclosed concrete mixing plant, utilizing environmentally friendly trucks, and substituting diesel pile hammers with hydraulic pile hammers that are half as loud.

China's Engineering Marvel: Country's 'Stunning Lake Tunnel' - The Longest In China - Opens For Traffic

China has opened the country's longest underwater tunnel. The 10.79-km Taihu tunnel beneath Lake Taihu in eastern China's Jiangsu Province

eurasiantimes.com

 

[xizhimen]

Build build, build...Shenzhen-Zhongshan cross-sea tunnel is nearly half-completed in China's Pearl River Bay region​

 

[xizhimen]

China’s US$34 billion Baihetan, the World’s 2nd largest hydropower station after The Three Gorges Dam, counting down to full-run, all 16 million-kw units installed

China’s US$34 billion Baihetan, the World’s 2nd largest hydropower station reports all its 16 million-kilowatt hydro-generating units have been completely installed with the last generating rotor being lifted into place

The rotors are essential to sustain the safe and steady operation of the hydro-generator units in the long run

This means the hydropower station, located on the border between SW China’s Yunnan and Sichuan provinces has started pre-operation countdown

In July 2021, the project's first two 1-gigawatt (GW) turbines started operating

When all generators are up and running in July this year Baihetan will be able to produce more than 62 terawatt hours of electricity a year

A total of 52 million tonnes of carbon dioxide emissions are expected to be reduced when it is in full operation

Power generated by Baihetan will be sent to affluent provinces in China’s Yangtze River Delta including eastern provinces of Jiangsu and Zhejiang

Built by China Three Gorges Corp., the construction of Baihetan started in 2017

The project is part of China’s scheme to generate electricity and deliver it to high energy-consuming regions on the east coast

 

[xizhimen]

Build, build, build...

 

[xizhimen]

China signs up 400 million new 5G subscribers in a year, more than doubling user population
730 million 5G services active in Middle Kingdom, while another 100 million 4G services came online too
Simon Sharwood, APAC Editor
Fri 21 Jan 2022 // 02:54 UTC

730 million 5G subscriptions have been ordered in China, according to operational statistics published this week by the nation's big three carriers: China Telecom, China Unicom, and China Mobile.

That total means 396.5 million new 5G packages were activated during 2021, more than doubling the 333.5 million services in operation as of January last year. The actual market could be even larger, as the three report subscriptions which could cover multiple devices or people.

Demand for other communications services continued to grow in China across 2021.

Even as they migrated millions of customers from 4G to 5G, the three carriers added another 100 million 4G subscribers. Not everyone wants the leading edge, it seems.

Wired broadband services rose by around 50 million, to a collective 505 million services across the big three.

China's statistical yearbook reports that the nation had 494 million households and 250 million "corporate enterprises" in 2020. Plenty are clearly making do without wired connections.

The surge is no surprise, as China has made 5G adoption an important element of its ongoing digitalization drive. The sheer scale is still stunning because no nation other than India and China even has a population of over 396.5 million – never mind a 5G market for 700 million services.

Readers may, at this point, recall the many predictions that 5G will be most widely used for machine-to-machine communications, making carrier data about subscriptions a less useful indicator. Such networks are, at present, hard to find. China will therefore likely own the world's biggest identifiable 5G user base for some time, as 5G rollouts in other nations with large populations – such as India and Indonesia – have scarcely commenced.

China's also showing no signs that it's worried about 5G's impact on aviation – a topic that has recently exercised regulators who fear radios using the standard could cause problems for passenger planes around airports. Ind fact, China's local telecom titan ZTE last year floated the idea of in-flight 5G for passengers. ®

China doubles its 5G user base

730 million 5G services active in Middle Kingdom, while another 100 million 4G services came online too

www.theregister.com

 

[xizhimen]

 

[xizhimen]

A family holds their ground and refuses to move for 13 years, the government didn't back down, neither did the family, but because the house location is in in the middle of a flyover complex, a golden location for advertisement, some companies pay them to erect advertisement billboards on the house, this family made over ￥100 million， （$15,770,000 USD）during the past 13 years from the advertisement billboards.​

最有远见“钉子户”，13年从未获任何赔款，但凭借这个收入过亿.​

最有远见“钉子户”，13年从未获任何赔款，但凭借这个收入过亿

最有远见“钉子户”，13年从未获任何赔款，但凭借这个收入过亿,钉子户,拆迁,搬迁,旧社区

www.163.com

 

[xizhimen]

Smart guy, he doesn't want a house, he just wants this location, no matter how much the government pays him, he will never move.

 

[xizhimen]

The 1,011Km Ya’an-Nyingchi bullet train section, consisting of 95.8% of tunnels and bridges, is under construction

Active landsides, avalanches, earthquakes...but nothing can stop Chinese engineers and construction workers

The Ya’an-Nyingchi section runs 1,011 kilometres and includes 26 stations, of which the total length of bridge and tunnel is 965.74 kilometers, and the bridge-to-tunnel ratio is as high as 95.8%. In particular, there are 72 new tunnels with a total length of 851.48 kilometers. In other words, the section from Ya'an to Nyingchi was built on a bridge in addition to being built in a tunnel, and there are very few railways paved on flat ground.

What is particularly difficult is that among the 72 tunnels with a total length of 851.48 kilometers from Ya'an to Linzhi, there are many extra-long tunnels with a length of more than 30 kilometers, of which the longest tunnel is the Yigong Tunnel of 42.5 kilometers. The Sejila Mountain Tunnel started this time has a total length of 37.9 kilometers, surpassing the Xinguanjiao Tunnel (32 kilometers in total length), which is known as the "first railway tunnel in China". In addition, the Duomuge Tunnel is 36 kilometers long, Zeduoshan Tunnel is 32.8 kilometers, Zila Mountain Tunnel is 32.7 kilometers, Mila Mountain Tunnel is 29.4 kilometers, Yela Mountain Tunnel is 28.6 kilometers, Haizishan Tunnel is 25 kilometers, and Boshu Laling Tunnel is 25 kilometers. 23.6 kilometers and so on. Most of these tunnels are built on the roof of the world, in iceberg canyons, and are completely beyond the difficulty level of all existing construction projects on the earth.

The total investment of the project is as high as 319.8 billion yuan ( $50 billion USD)