Boosting the Construction of Shenzhen-Dalian Intercity Railway, China Railway Shanhe No.0061 Dual-mode Shield Machine Launched Successfully

With the slow rotation of the huge cutter head，August 31，China Railway Shanhe No.0061 Dual-mode Shield Machine at Bainikeng Station in the Fourth Work Area of Shenzhen-Dalian Intercity Railway～The section of Baida No.1 working well started smoothly，The 6-kilometer-long double-track shield section construction charge horn was officially sounded.，It marks the further acceleration of the construction of Shenzhen-Dalian Intercity Railway Project.，To lay a solid foundation for accelerating the rapid interconnection of rail transit in Guangdong-Hong Kong-Macao Greater Bay Area。

Bainikeng Station of Shenzhen-Dalian Intercity Railway Project～The starting and ending mileage of the left line of Baida No.1 working well section is 3085..545 meters，The starting and ending mileage of the right line is 3079..9 meters，The total length of the interval is 6165.445 meters。After the line leaves Bainikeng Station，Pass through the Bainikeng architectural complex in turn、Pingyan Railway、Paibang Interchange、Subgrade Section of Hangzhou-Shenzhen Railway、Yantian Tunnel and other important buildings and structures，To No.1 working shaft。The thickness of covering soil in this section is 16～105 meters，The maximum longitudinal gradient is 27‰，The minimum curve radius of the section plane is 1300m.。The tunnel body mainly passes through fully weathered quartz sandstone.、Weathered quartz sandstone、Moderately weathered quartz sandstone、Slightly and moderately weathered siltstone，The compressive strength of rock mass is greater than 100 MPa.，Single construction distance up to 3 km，The burial depth is large，And it is downhill tunneling.，The construction is difficult.。

In view of the above problems，China Railway Shanhe United Brothers invited experts from all sides to discuss and analyze the technical parameters of the shield.，Comprehensively consider the actual construction conditions of deep and large project tunnel，Optimize the design of Shield Machine type，Finally, it took more than eight months to complete the Lotus One.（Number 0061）φ9130mmEPB/TBMDesign and Manufacture of Double Mode Shield，It was launched in Zhongshan Manufacturing Base on July 15.。

The excavation diameter of the shield is 9.13 meters，The total length of the whole machine is about 113 meters.，It weighs about 1500 tons.，Possess earth pressure balance function and openTBMTunneling function，Split initiation is adopted，Slag discharge by battery car and gantry crane，Adapt to possible soft rock、Tunneling equipment for hard rock composite stratum engineering geological condition，When the formation geology changes, the tunneling mode and the slag tapping mode are changed.，Small interference to supporting construction，It can effectively reduce the project risk.。

In order to ensure the smooth start of the shield，China Railway Shanhe technicians have carried out a lot of deployment preparations.，Overcome the small site、Cross operation and equipment mobilization, etc.，Successfully completed the Shield Machine down the well、Assemble、Debugging and other work，Reach the starting conditions before August 30 and complete the assembly of the 3-ring negative ring，In order to realize the smooth start of the shield，It is also the next step to speed up shield construction.、The completion of the construction node with quality and quantity guaranteed sounded the rallying cry.。

Previous: Helping the World's Highest Altitude UHVDC Transmission Project, Sunward Intelligent Rotary Drilling Rig Shows Hard Core Strength

Next: Help build a global R & D center city! Construction of Innovation Incubation Base of Zoomlion Global R & D Center