Digging at full speed!China Construction Eighth Bureau Qingdao Metro Line 6 Chuang ~ Shitidi Double Line through

June 18th

With the huge knife plate breaks, it comes out

Boarded by the Eighth Bureau of China Construction

Qingdao Metro Line 6

Chuangzhi Valley Station ~ Shishan Road Station Division

Successfully realize dual -line penetration

Become the first adoption of Chinese architecture

Double shield TBM construction method digging

Realize dual -line penetration subway interval

The first phase of Qingdao Metro Line 6

Located on the west coast of Qingdao City

It is of great significance to promote the coordinated development of Qingdao's urban economy

China Construction Eighth Bureau Rail Company

As the only participating unit of the China Construction System

Inherse the construction of three stations and three segments

Among them, Chuang ~ Shitido is 1897 meters in length

Its mechanical method excavation length is about 1688 meters

It is the longest engineering distance of Qingdao Metro Line 6

Machinery (double shield TBM) construction interval

Complex geological risks are heavy

First difficulty

Wear multiple major risks underneath

Pass through the reservoir river under the project

And many major risks such as the bridge

Among them, the double -line interval is wearing a total

269 ​​meters of Caijiazhuang Reservoir

Control the basin area of ​​2050 square kilometers

Effective library is 192,000 cubic meters

And the reservoir dam is a homogeneous soil dam

At the same time, the crushing band of the composite crushing zone of No. III and III

Stylus water content is large

Geological stability is extremely poor

It is very easy to emerge in water and rush sand

Even danger of tunnel collapse

Second difficulty

Long -distance and complete crushing band

Digging in the project interval

Long -distance passing through 5

Compound crushing zone with poor stability

At the same time, multiple strong wind grooves

Directly invading the bottom of the tunnel

As a result, excavation construction is facing

Stranger rich water, gravel card machine, etc.

Many uncertain factors

Serious restrictions on construction progress

Third difficulty

Long -distance crossing high -strength rock

Project interval excavation

Need long distance crossing high intensity

Binochemical granite

And class Ⅱ and III 围 以及 rocks

At this time, the highest hardness can reach 120MPa

And ordinary soil pressure balance shield machine

It is difficult to dig at such a hard strata

If the traditional drill explosion method is used to build

Not only safety risks

And it will seriously affect the construction speed

Dare to fight, dare to fight hard to attack

Facing the risk challenge

The project is united, and it is difficult to attack

Multi -party comparison, scientific research judgment

Decisively select the double shield TBM construction method

And many times organize expert demonstrations

Preparation of special schemes through the critical risk source in advance

Ensure that the design scheme is seamlessly connected with on -site construction

In order to effectively respond to the impact of complex strata

At the same time in the process of excavation

The project insists on scientific construction without relaxing

Starting from the design plan and construction technology

Taking construction safety quality control as the goal

Combined with the actual situation, adhere to the problem -oriented

Control of TBM digging posture control

Bean grain stone blowing, cement grouting process

Risk control body and other system optimization

Comprehensively realize the double rise of construction and efficiency

School -Enterprise Alliance Science and Technology Blessing

During the project construction process

Always adhere to innovation -driven development

Take the initiative to connect with domestic professional advantage universities

With Shandong University, Beijing University of Technology and other universities

Establish a school enterprise science and technology alliance

Integrated internal surgery resources

Applying advanced technical means in the industry in time

Solving problems in the construction process

Ensure that the project is efficiently advanced

Equipped by innovation on TBM devices

Ahead of the Geological Forecast System

Knife System Monitoring System

Slag Rock (soil) intelligent identification system

Realize the optimization and improvement of the performance of TBM equipment

Further build a safe production defense line

And greatly reduced the impact of the engineering environment

At the same time, the project insists

"Special action to save diligence and frugality" special action

Tightly combined with construction production

Focus on process creativity and encourage all staff to innovate

On the basis of scientific verification

Adopt measures to reinforcement reinforcement of grouting band grouting

Improve project benefits

Won the special commendation and reward of the owner unit

Tiejun speed help first -class

April 2022

Qingdao Metro Line 6 project double shield TBM

Wear Caijiazhuang Reservoir under successful safety

Create again under the condition of the vertical well

Excavator of 480 meters in a single month

Successfully break Qingdao Metro

Double Shield TBM Equipment Monthly Digging Record

Before

The majority of builders of China Construction Eighth Bureau

Do not forget the mission of the first heart, and forever the iron army style

Has continued

"The first to complete the enclosure structure is closed"

"The main foundation pit of the first station on the entire station is bottomed with the bottom of the station"

"The first shield in the entire line starts"

Wait more than 10 items in the first line

Build a world -class subway for Qingdao City

And promote local economic and social development

Inject a strong motivation

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