The digging "Iron Army" is coming! China Railway Shanhe Dongguan Metro Line 1 Right Line Shield Machine Departure in Pedestrian Section

November ninth，The Shield Machine of the right line of Dongguan Metro Line 1, which was constructed by China Railway Shanhe, started smoothly.，This is the second construction of China Railway Shanhe Shield Machine after it successfully penetrated the pedestrian section of the line in November last year.，It is of great significance to the overall progress of the project.。

It is reported that，Dongguan Metro Line 1 is one of the backbone lines of the urban rail transit network in Dongguan City, Guangdong Province.，It is an important transportation line connecting Guangzhou and Shenzhen rail transit network in Dongguan.，Contact the core groups of the two main urban areas of Dongguan City（Guancheng area、Songshan Lake area）Main axis of development。

People's Hospital Station of Dongguan Metro Line 1～The total length of the right line in the section of the General Automobile Station is 1715..05m，The ground buildings and structures along the line are mainly highway interchange and commercial residential buildings.，Greatly increase the difficulty and risk of excavation。

It has been discussed and verified by the technical personnel of China Railway Shanhe and the construction project party.，Excavation diameter of 6980 is selectedmmEarth pressure balance Shield Machine，Driving from small mileage to large mileage，The tunnel is presented“V”Glyph slope，At 26‰Uphill start，27‰Uphill reception，The minimum turning radius of the plane is 450.m。

“As the tunnel crossing range is mainly silt,、Liquefied sand layer and strength（Medium）Weathered calcareous mudstone layer，The buried depth of the tunnel is about 9.67～24.65m，For this reason，The shield machine in this section is specially equipped with a double-screw conveyor.，Reduce the spouting frequency of driving muck。”Introduction of on-site personnel。

The Right Line Tunnel of the Pedestrian and Automobile Shield Section of Dongguan Metro Line 1 Was Successfully Launched，Greatly stimulated the enthusiasm of the staff of the project department，It lays a good foundation for the completion of subsequent node tasks.，It provides a solid and powerful guarantee for the whole line.。

Coming up，China Railway Shanhe Project Department will organize carefully，Reasonable arrangement，Heavy safety、Guarantee production、Grasp quality、Create benefits，Optimize the construction group、Refine the process，Carry out all work in a down-to-earth manner，Make concerted efforts to promote construction and production，Complete all construction tasks with quality and quantity guaranteed，Establish a good image for the development of the company in the Guangdong market。

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