CCTV "Super Equipment" | Dalian Bay, XCMG Tunneling "Mecha Beast" Launches Rock Breaking Operation

September 19, 2022

September 16

CCTV-9#Super equipment#The second season

Episode 4《Across the world》Start broadcasting

Wang Kai, the audience and actor of the whole network

Hear together

In the Dalian Bay Subsea Tunnel

XCMG Roadheader“Roar and roar”

See together

Incarnation of XCMG Roadheader“Steel behemoth”

The pick made its teeth and thundered toward the rock wall.

“Hong Kong, Zhuhai and Macao in the south，There is Dalian Bay in the north”。It is the first large-scale immersed tunnel in the northern sea area of China.，After the completion of the Dalian Bay Subsea Tunnel Project，To build the Bohai Rim、The Yellow Sea coastal economic circle is of great significance.。

Dalian Bay of Large Rock Strata Geology，It is an excellent natural harbor.，But for tunnel construction,，But it is a difficult problem that can not be avoided.。There are hard rocks in the strata of Dalian Bay Subsea Tunnel.，Mixed with sticky quartzite.，The compressive strength of hard rock is about 100 MPa.，It can support the weight of 2000 African elephants per square meter.。

Other than that，There is also a large petrochemical plant above the tunnel.，The cover of the tunnel is only about 7 meters.，If the tunneling operation disturbs the petrochemical facilities on the ground,，Not only could it cause the tank to explode，There may even be casualties.。

XugongXTR7/360 cantilever tunnel Boring MachineThe total weight is 145 tons，Moderate size，The maximum cutting height is 7.2 meters，Can be applied to the rock wall during tunneling1 per square centimeter.A force of five tons.，On the basis of flexibility, it also has the advantages of hard rock excavation.，It is suitable for the subway、Highway、Railways, etc、Excavation of large-section tunnel。

The XCMG cantilever tunnel Boring Machine consists of a cutting head,、Transportation system、The self-running mechanism consists of three parts.，The cutting head is the most eye-catching part of the Roadheader.。

The cutting head is provided with sharp cutting teeth which are precisely welded by a welding robot，CanMaximize cutting force，Reduce the eccentric wear of pick，So that it can cope with rock as hard as steel.，It can also solve the sticky quartzite.。

XCMG technicians give the roadheader invincible power at the same time，It also gives it the tenderness of moistening things silently.，A circle of spray nozzles is hidden at the rear end of the cutting head.，The spray nozzle will automatically spray water mist.，Reduce dust and debris of soil and rock，This will cool the machine.，But also can improve that work environment.，Provide protection for the health of operating personnel。