The high -speed rail "cross" high -speed rail, success

June 11, 2022

350 kilometers per hour

Shanshan Railway across the existing Xiamen -Shenzhen Railway Tunnel

—— Pinggongshan Tunnel goes smoothly

The penetration of the tunnel is the Shanshan Railway

Subsequent beams and no orbit construction

Lay down a solid foundation

The Pinggongshan Tunnel is located in Chikeng Town, Shanwei City, Guangdong Province, with a total length of 1006.31 meters. The Pingfengshan Tunnel of the Xiamen -Shenzhen Railway is one of the heavy projects of the Shanshan Railway.

The construction of the existing wired tunnel is rare in China. In order to ensure safety, China Railway Design Group Co., Ltd. organized the participating units to conduct detailed arranges to the current status of the Pingfengshan Tunnel, and held multiple rounds of expert demonstration meetings to finally determine the use of the existing cable "sunroof" skylights on the upper -influence paragraph. "Time adopts the micro -blasting scheme of the electronic detonator.

During the blasting of the "Skylight" point, the construction staff dynamically adjusted the parameters of the blasting drilling, the amount of dosage and the interval between the explosion according to the existing wired situation. During the construction period, the tunnel had a cumulative "sunroof" point blasting 61 times, and the 97.6 -meter blasting excavation task was completed safely.

In order to further avoid the impact of the existing tunnel structure and accelerate the progress of construction, when the China Railway Society of Shanshan Total Bags Project proposed that when the existing tunnel was near the existing tunnel, the "mechanical excavation" instead of "micro -poor control blasting" will be used. The impact of construction on the existing wired tunnel was minimized.

The Shanshan Railway is located in the coastal areas of the southeast of Guangdong Province. It passes through Shanwei, Jieyang and Shantou. The total length of the line is about 162 kilometers, and the design speed is 350 kilometers per hour. There are 14 tunnels, accounting for 20.3%of the length of the entire line. The line is connected to the Guangshan high -speed railway under construction at the Xiamen -Shenzhen Railway Shanwei Station to further communicate the Guangdong -Hong Kong -Macao Greater Bay Area. Essence

After the Shanshan Railway is completed and opened to traffic, the trip from Shantou to Guangzhou will be shortened to about 1.5 hours. It will increase the development energy level of cities along the line and build a vibrant corridor for coastal economic belts.

Source: China Railway

- END -