On the afternoon of June 29th，With the concrete collapse of the diaphragm wall at the receiving end of the bus terminal,，Cutter head of No.27 machine of China Railway Shanhe reaches out“Head”，It marks the successful completion of Dongguan Metro Line 1 by China Railway Shanhe.-Excavation task of the right line of the shore section。

China Railway Shanhe Unit 27 was excavated from Binjiang Stadium Station in June 2021.，During the construction period, the tunnel was shut down for about 13 months due to the owner's site selection of the bus terminal station.，The high temperature and humidity environment in the tunnel is a great test to the performance of the equipment.。October 2022，China Railway Shanhe No.27 Machine Begins Re-pushing Tunneling，Each inspection unit shall inspect and evaluate the equipment before re-pushing.，All performance indexes meet the tunneling requirements.，It has once again proved the reliability of China Railway Shanhe Shield Machine.、Solid、Durable。

Overcome difficulties

Dongguan Metro Line 1-The total length of the coastal area is 1011 meters.，The main geology is medium.、Strongly weathered calcareous mudstone、Silty soil、Miscellaneous fill, etc，The tunnel crosses the Dongjiang River along the way.、Houses at Quhai Bridge、Major risk sources such as pier pile foundation of Quhai Bridge，In particular, the Dongjiang River is a navigable river in the city.，The top of the tunnel is only 8 meters from the shallowest depth of the riverbed.，Control of gushing and seepage has become the focus of the project.。

The soil bin visualization system installed by China Railway Shanhe Shield Machine provides a strong guarantee for the construction of this section.，In the process of excavation, the situation in the soil bin can be observed in real time.，Take corresponding measures according to the situation.，And that safety of the shield machine is ensure.、Smooth、Efficient crossing of the Dongjiang River，It was highly recognized and praised by the project department.。

The smooth completion of the project is another major milestone in the relocation of Zhongtieshan Henan to Guangzhou.，It has once again contributed to the high-quality development of Guangdong-Hong Kong-Macao Greater Bay Area.。