China News Network, Guangdong, September 5. (Reporter Chen Wen)September 5，The reporter learned from the Fourth Bureau of China Railway，The Shenguan Tunnel, a major control project of the Shenzhen section of the Shenjiang Railway, has been under construction recently.，It marks that the construction and production of the whole line has entered the stage of overall speed-up.。

After the project is completed and opened to traffic，Shenzhen and Jiangmen can be accessible within one hour，Shenzhen and Guangzhou Nansha Free Trade Zone can realize half-hour high-speed railway interconnection.，To further open up the coastal high-speed rail corridor，Radiation drives Guangdong Province to speed up its construction“One core, one belt and one area”A new pattern of regional development，It is of great significance to realize the high-quality development of Guangdong Province.。

It is reported that，Shenjiang Railway is a national railway.“Eight vertical and eight horizontal”Planning is an important part of coastal high-speed rail.，The construction period is five and a half years.，It is expected to open in 2028。Total length of main line of the project: 116.309km，It is constructed and managed by Jiangmen Engineering Construction Command of China Railway Guangzhou Bureau Group Company.，Bid 5 of Shenjiang Railway undertaken by China Railway No.4 Engineering Group Co., Ltd. has a total length of 20.06 kilometers，The bid section is“No.1 Road, No.2 Tunnel and No.2 Bridge”Structure，It has a wide range of trans-national environmental protection zones.、Difficult to coordinate requisition and demolition、Difficult construction and so on.。

As a major control project of Shenzhen section of Shenjiang Railway，Shenguan tunnel(Tie Line)Total length 7324.878 meters，Drilling and blasting method、Tunnel construction by shield combined method，Among them, the construction of composite stratum earth pressure slurry dual-mode large-diameter shield intensive underpass diversified buildings is the first case in China.，It is expected to be completed in 2027.。