www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

Global EditionASIA 中文雙語Fran?ais
Business
Home / Business / Companies

CREG a force in global tunnel projects

By ZHONG NAN | China Daily | Updated: 2021-10-18 09:19
Share
Share - WeChat
Workers from China Railway Engineering Equipment Group Co Ltd's plant in Zhengzhou, Henan province, check a part of a tunnel boring machine in January 2020. The equipment is scheduled to be exported. [Photo provided to China Daily]

The company will enhance localization strategy and accelerate development of overseas operations over the next five years

There is something in common about projects like the West Gate tunnel in Melbourne, the tunneling work for the Red Line of Tel Aviv's light rail service, the Sydhavn Metro Line's extension space in Copenhagen and the drainage tunnel project in Doha.

All of the tunnel boring machines were built by China Railway Engineering Equipment Group Co Ltd, one of the country's major underground solutions providers by sales revenue.

With many countries adding financial resources to build big-ticket infrastructure projects to cast off the impact caused by the COVID-19 pandemic, CREG, the Zhengzhou, Henan province-based provider of mechanized tunneling technology and services, will focus on supplying advanced TBMs to developed markets to reinforce China's role in the world's supply chain during the 14th Five-Year Plan period (2021-25).

TBMs are used to excavate tunnels, subway tubes and sewer lines. Compared with traditional tunnel boring methods like drill and blasting for manual excavation, the use of such giant TBMs could minimize the impact on the surroundings and produce a smooth tunnel wall, helping certain tunnel projects manage unstable geologic conditions.

CREG shipped two earth pressure balance TBMs for the construction of a 12.8-kilometer tunnel of the Naples-Bari High-Speed Railway in early September. The machines will arrive in Italy by the end of this year.

With diameters of 12.5 meters and 12.2 meters, respectively, the TBMs will be the largest ones exported from China to Europe. They are expected to start boring work in the European country in the first quarter of 2022.

Zhao Hua, president of CREG, said a number of opportunities were seen both at home and abroad, especially in economies participating in the Belt and Road Initiative, amid growing demand for special construction machinery and tunnel boring equipment.

Many new foreign orders for upgrading and renewal of infrastructure facilities were also inked along with subway projects, water conservation and underground crossings.

"TBMs are used to support railway and highway projects. They are getting larger as tunnels become wider to integrate utilities such as water supply and drainage pipes, telecommunication and power cables," Zhao said.

The official added that the company, a subsidiary of State-owned China Railway Group Ltd, will enhance its localization strategy and accelerate development of overseas operations to build core competitiveness between 2021 and 2025.

The Chinese firm successfully completed the boring work for a road tunnel under the Swina River, connecting the islands of Uznam and Wolin on the Baltic Sea, in early September. The tunnel is 1,780 meters long and CREG's TBM drilled 1,483 meters of the new road under the river, shortening the commute time from 40 minutes by ferry to 4 minutes by vehicles in the future.

The tunnel features a crown overburden of about 26 meters and a minimum horizontal turning radius of 300 meters. The tunnel alignment crosses fine sand and fine-medium sand with gravel in the Uznam and Wolin sides. Below the Swina strait are deposits of fine-medium sand with gravel.

With a diameter of 13.46 meters, the customized machine extends approximately 105 meters and weighs over 2,700 metric tons. To better cope with the geology, targeted designs such as a cutterhead structure with a big opening ratio, a pipe extension system with zero slurry spillage, and a special articulation design for ease of steering and cutterhead retraction are applied on the TBM.

Once the tunnel project is completed, it will provide a direct connection between Uznam and the Polish mainland. The journey time will be reduced to just a few minutes, and the mainland's connection to Polish holiday areas in West Pomerania will be significantly improved, Zhao said.

Currently, transportation is provided by ferry crossings. Such a service has a fairly limited capacity and is dependent on weather conditions.

In France, a TBM manufactured and supplied by CREG broke through at Aulnay station in mid-August for the metro tunnel project of Line 16 of the Grand Paris Express Lot 2.

The Grand Paris Express is part of the Grand Paris project announced in 2007 to develop Greater Paris into a sustainable metropolitan area. For Line 16 of Grand Paris Express Lot 2, the TBM bored a section totaling 11.1 km in length and this was excavated by two 9.86-meter diameter TBMs supplied by CREG.

As the first ever and only Chinese TBM manufacturer in the French market, CREG has ensured the progress of both projects and construction safety, Zhao said. Since its launch on April 7, the first TBM has successfully overcome many challenges such as umbilical launch in a small space, and its peak daily advance is able to reach 28 meters with stable performance.

Supported by more than 3,000 employees, including 500 designers to design and manufacture TBMs and associated equipment, the company has exported TBMs to 26 countries and regions, including Malaysia, Singapore, India and the Middle East.

To compete with established global rivals, CREG is integrating big data technology and a cloud computing center for smart and remote control of TBMs in both tunneling and services, thus transforming itself from an equipment manufacturer into a complete underground solutions provider.

The world's recovery from the COVID-19 pandemic, especially in tourism and other service sectors, will create growth momentum for infrastructure in the post-pandemic era, said Zhao Ying, a researcher at the Beijing-based Institute of Industrial Economics, which is affiliated with the Chinese Academy of Social Sciences.

This would also help the medium and long-term development visions of many countries, such as the United Arab Emirates, Saudi Arabia and the Philippines, or spur national strategies to put their economic growth on a firmer footing via transportation-related infrastructure projects, expos, utility and service facilities, as well as hospitals and educational institutions.

"Therefore, the world's demand for TBMs will remain stable as many economies are seeking to create jobs and stimulate trade flows via big-ticket transportation, smart city and other infrastructure projects, which certainly require tunnels," the researcher said, adding projects like urban subways and railways that traverse mountains or waterways usually require the technical support of TBMs.

To better support China's dual-circulation development paradigm, a strategy featuring domestic and overseas markets reinforcing each other with the domestic market as the mainstay, CREG will continue to deploy resources and manpower to seize greater market share in the Beijing-Tianjin-Hebei region, the Yangtze River Delta region and the Guangdong-Hong Kong-Macao Greater Bay Area from 2021 to 2025, said the company.

Top
BACK TO THE TOP
English
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
CLOSE
 
主站蜘蛛池模板: 国产成人精品免费久久久久 | 成人a区 | 国产一区二区三区四区五区tv | 台湾精品视频在线播放 | 亚洲在线精品视频 | 91亚洲在线 | 在线播放精品一区二区啪视频 | 日韩一级视频在线观看播放 | 视频在线观看一区 | 精品国产欧美一区二区最新 | 大毛片a大毛片 | 欧美日韩一区二区中文字幕视频 | 亚洲一区二区精品推荐 | 亚洲成人免费 | 亚洲二区在线播放 | 成人午夜 | 在线观看日本永久免费视频 | 久久一本一区二区三区 | 爱综合 | 亚洲福利影视 | 99视频久久 | 国产精品亚洲视频 | 99国产精品高清一区二区二区 | 亚洲特黄视频 | 亚洲精品成人一区 | 亚洲天堂久久新 | 三级网站 | 高清成人| 亚洲成网站 | 一级v片| 久草视频福利资源站 | 中文字幕有码在线观看 | 久久精品国产亚洲a | 国产在线精品福利一区二区三区 | 一级床上爽高清播放 | 97在线免费观看视频 | 日韩免费高清一级毛片 | 午夜国产精品不卡在线观看 | 欧美成人性性 | 久草免费在线视频 | 亚洲成人黄色网 |