Xinjiang new plastic tunnel escape pipeline

  Significance of setting safety escape pipe: , The escape pipe system is easy to use, the installation and movement time is short, the equipment is simple, easy to operate, the investment is small, and the economic benefit is significant, which is conducive to promotion
More importantly, in case of tunnel closing and collapse accident, the system can effectively save the lives of construction personnel, and the social and economic benefits are huge

At present, there are two main materials of tunnel escape pipes: one is steel tunnel escape pipe and the other is ultra-high molecular weight polyethylene escape pipe
The two materials have their own characteristics
The steel tunnel escape pipeline adopts the manufacturing process of internal epoxy lining, which has strong corrosion resistance, and the steel pipeline is not easy to be damaged
However, steel pipes are heavy and should not be handled
The deformation of steel pipeline cannot be recovered
The ultra-high molecular weight tunnel escape pipeline is made of ultra-high molecular weight polyethylene and flame retardant
The pipeline is light in weight, convenient for transportation and installation
The pipeline has good impact resistance and is not easy to deform
The inner walls of the two pipes are smooth and will not suffer secondary injury during escape

How to protect the personal safety of personnel during tunnel construction? Combined with the market survey of our company in 2015, it is found that all tunnel construction units in China have long used steel pipe as construction escape
However, because the impact resistance of steel pipe itself is too poor and the plastic pipe is not impact resistant, it can not protect the escape of construction personnel, and its weight is too heavy and inconvenient to install, which has been despised by major tunnel construction units, The company specially develops a new type of tunnel escape pipe

Design and parameters of escape pipeline
DN800 escape pipe (molecular weight about 2
5 million), specification & phi; UHMWPE * 30MM, and its main parameters are: yield strength & sigma; 1 = 3
7gpa, elastic modulus: E1 = 700MPa; Poisson's ratio & Nu; 1=0
42； Density: & Rho; 1=950kg/m3　。
The impact specimen is massive granite, the diameter of the rock block is preliminarily selected as 0
67M, and the rock mass parameters are as follows: elastic modulus E2 = 40gpa, Poisson's ratio ν 2 = 0
2, density & Rho; 2=2500kg/m3。 Weight of rock block w = 611kg

 
When the tunnel collapses, the most important thing is to consider the impact resistance of the escape pipe, that is, the part where the escape pipe of the tunnel is hit must also meet the evacuation requirements
The indexes of UHMWPE pipes we use must be strictly tested
We must not use waste materials and recycled materials for processing and production
The molecular weight density must meet the use standard
Only in this way can the safety of workers working in the tunnel be guaranteed

In some projects, it is best to connect the ventilation pipe with the tunnel escape pipe
In this way, when an emergency occurs during construction and the tunnel is buried, the ventilation pipe can be used to transport the external fresh air directly to the tunnel through the air supply pipe, and then to the tunnel face, so that the trapped people can get a good breathing environment
We can use steel belt corrugated pipe for ventilation pipe, which has strong buried performance
The specification of ring stiffness establishes his compressive capacity
In this way, the two pipes are connected, which plays a great role in the safety of the tunnel

Reasons for the application of ultra-high polymer tunnel escape pipeline in tunnel rescue:
1
It provides an extremely safe and reliable guarantee for escape and emergency rescue in highway tunnel construction
Due to the light weight of UHMWPE tunnel escape pipeline material, it is convenient to disassemble and carry; The pipeline has good toughness and high impact strength
When impacted by strong external force, it will instantly deform, absorb a large amount of impact energy, and then quickly restore its original shape

2
The pressure bearing capacity and environmental damage resistance are far higher than those of ordinary pipelines Light tunnel escape pipeline has high ring stiffness, good pressure resistance and is not easy to deform
When collapse occurs in highway tunnel construction, the transportation department uses new materials (ultra-high molecular weight polyethylene) to design the emergency rescue channel for highway tunnel construction

3
The structural dimension of UHMWPE emergency rescue channel conforms to the principle of ergonomics
The utility model has the advantages of simple structure and convenient disassembly
Later, through the impact resistance comparison test of UHMWPE tunnel escape pipeline and steel pipe, the reliability of UHMWPE tunnel escape pipeline applied to highway tunnel construction emergency rescue is verified

Escape pipeline - tunnel construction project department
Changheba Hydropower Station contracted by Sinohydro Bureau 14, Kangding County, Ganzi, Sichuan Escape pipe 100m
CCCC Second Highway Engineering Co
, Ltd
undertook the construction of 51 meters of escape pipe in Rongjiang County, Guizhou Province
The escape pipe of shaole expressway of China Railway 20th bureau is 51m in Pu'er Town, Yanjin County, Zhaotong City, Yunnan Province
Banling village, Fengcheng street, Xinfeng County Guangzhou City ф 800 tunnel escape pipe
Kunming Zhongqiao fifth Bureau (Yunnan Yunling highway engineering registered safety engineer affairs Co
, Ltd
) ,
CCCC Fourth Highway Engineering Bureau Co
, Ltd
mengwenyan expressway project management department No
2 branch
Yunnan Guangxi Railway Project Department of China Railway Tunnel Bureau (tunnel escape pipeline of the third division of Yunnan Guangxi railway project)
Yunnan Guangxi Railway Project Department of China Railway 10th Bureau (tunnel escape pipeline of Yunnan Guangxi railway project)
Tel: 0379-65227507 , Business QQ: two billion twenty-one million seven hundred and four thousand eight hundred and fifty-two
Address: Henan Luoyang Airport Industrial Cluster
More details- http://www
ffgdw
com/