PR86381

QINGDAO, China, Oct. 30, 2020 /PRNewswire=KYODO JBN/ --

-Qingdao Conson Development starts construction on the second Jiaozhou Bay tunnel

The commencement ceremony for the second Jiaozhou Bay Tunnel project, also the

world's longest Subsea road tunnel, was held in Qingdao's West Coast New Area

on October 29, bringing together leaders and experts from government, academia,

and Qingdao Conson Development (Group) Co., Ltd. (hereinafter "Qingdao Conson

Development") to witness its kick-off.

During the ceremony, Wang Jianhui, the Chairman of Qingdao Conson Development's

said, "The second Jiaozhou Bay Subsea tunnel will optimize the city's urban

structure and strengthen the connection between the east and the west, enabling

both sides of the strait to flourish and alleviating traffic congestion. With a

high standard of design, construction quality, and management efficiency,

Qingdao Conson Development is excited to contribute to the emergence of Qingdao

as an open, modern, dynamic, fashionable, and international city."

Qingdao Conson Development began preliminary research on the second Jiaozhou

Bay Subsea tunnel in 2012, engaging China's leading experts, including

academician Qian Qihu. In total, four pre-feasibility and 15 feasibility

studies were conducted. Now, Qingdao Conson Development has begun construction

on what will become the world's longest Subsea road tunnel.

This project leverages international cooperation and innovation to propel

tunnel design and construction into a new era. By overcoming challenges such as

tunnel ventilation, disaster prevention, super-high water pressure, passage

through large-scale fractures, and large-scale diameter shield docking in the

drill-and-blast method, it is a historic achievement and major feat, making

China a leader in tunnel engineering.

The tunnel will begin at Huaihe East Road in West Coast New District,

stretching alongside Liugongdao Road and passing under Jiaozhou Bay before

landing at Qingdao Port, and connect East Coast, effectively connecting

Qingdao's coastal urban areas. At 15.89 kilometers, it will feature six two-way

lanes, making it longer than Norway's Ryfylke Tunnel (14.3 kilometers). The

earth and stone excavated are set to top 8 million cubic meters, exceeding

Japan's Seikan Tunnel (5.2 million cubic meters) and Europe's Channel Tunnel

(4.8 million cubic meters).

This project is part of China's ongoing construction of large-scale urban

infrastructure transportation facilities supporting its economic development.

The second Jiaozhou Bay Subsea tunnel will serve as an international benchmark

in tunnel design, construction, and operations for the next decade, paving the

way for future sea tunnels in China and around the world. It will also promote

the development of Jiaozhou Bay, enhance the overall competitiveness of the

Jiaodong Peninsula, and establish Qingdao as a world-class coastal city on the

One Belt, One Road's Maritime Silk Road.

Visit http://www.qdgxjt.com/about/index.html .

About Qingdao Conson Development

Qingdao Conson Development (Group) Co., Ltd. was established in 2008 with the

approval of the Qingdao Municipal Government. As a state-owned capital

investment and operations entity, it operates state-owned capital and assets as

well as conducts investment financing, capital operations, and asset

management, with adoption of urban development strategy, taking on the mission

of urban development.

Source: Qingdao Conson Development

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   Caption: Qingdao Conson Development starts construction on the world’s longest subsea

road tunnel