It will take only 2.5 hours from Beijing to Shenyang after the whole Beijing Shenyang high speed railway tunnel is opened to traffic

Xinhua news agency, Beijing, Dec. 12 (Ding Jing, Lu Jing) on the morning of Dec. 12, the last tunnel of Beijing Shenyang high speed railway was successfully completed in lihuading tunnel, Miyun District, Beijing. According to China Railway Beijing Bureau Group Co., Ltd., with the completion of the tunnel, a breakthrough has been made in the construction of Beijing Shenyang high speed railway, laying a solid foundation for the operation of the whole line as scheduled.

Beijing Shenyang high speed railway starts from Beijing Xinghuo station, passes through Shunyi District, Huairou District and Miyun District of Beijing, Chengde city of Hebei Province, Chaoyang City, Fuxin city and Shenyang City of Liaoning Province, and ends at Shenyang station, with a total length of 698.294 km. A 6031 a 6031 according to Chi Youfeng, engineer of Engineering Management Department of Beijing Shenyang Railway Passenger Dedicated Line Beijing Hebei Co., Ltd., the main line of Beijing Shenyang High Speed Railway Beijing Hebei section is 290 km long with a design speed of 350 km / h. Among them, lihuading tunnel, with a total length of 12.243 kilometers and a complex geological structure, is the longest and most difficult tunnel in Beijing Hebei section of Beijing Shenyang high speed railway, as well as the key and difficult control project of the whole line.

according to the introduction of China Railway 19th Bureau and China Railway 22nd Bureau, which are responsible for the construction, the construction company popularized and used four new technologies, including the injection process with formwork, the embedded channel automatic jacking system, the wet spraying manipulator, and the microwave welding technology, and obtained two patents relying on the project. In order to protect the monument of the Great Wall, the method of controlled blasting and milling with single arm roadheader is adopted in the construction, which effectively reduces the adverse impact of the construction on the geological environment. The use of wet spraying manipulator in tunnel engineering can not only reduce the cost and improve the efficiency, but also greatly reduce the dust concentration in the tunnel and improve the construction environment. The project innovation team also developed the embedded channel automatic jacking system, which reduced the channel scrap rate from the original 5% to about 1.5%, improving the construction quality and efficiency. The

Beijing Shenyang high speed railway is an important part of the national "eight vertical and eight horizontal" high speed railway network, which is an important part of the channel from Beijing to Hong Kong and Macao. Its north end is connected with Harbin Dalian high speed railway through Shenyang hub, and its south end is connected with Beijing Guangzhou and Beijing Shanghai high speed railway through Beijing hub. It is a high-speed railway passenger transport channel that runs through the north and south, connects the northeast and the Central South. The Chengde Shenyang section of Beijing Shenyang high speed railway has been put into operation on December 29, 2018, and the Beijing Chengde section is under construction. After the Beijing Shenyang high speed railway is opened to traffic, the operation time from Beijing to Shenyang will be shortened to 2.5 hours.