Tunnel escape pipeline, ultra-high molecular weight polyethylene rescue passage, Sichuan

Tunnel escape pipeline

Tunnel escape pipeline, ultra-high molecular weight polyethylene rescue passage, SichuanIt is an important safety facility in tunnel construction, mainly used to provide an emergency evacuation route for workers when encountering dangerous situations such as landslides during tunnel construction. The following is a detailed introduction to tunnel escape pipelines:

1、 Material selection

There are mainly two types of materials for tunnel escape pipes:

1. Steel escape pipelineResistant to acid, alkali, and corrosion, the price is cheap, but the pipes are heavy and not conducive to synchronous forward transportation during construction.

2. Polymer polyethylene escape pipelineThe required pipe diameter is small, occupying less space, and can be moved along with the palm surface through the splicing method of "dismantling the tail and filling the head". This escape pipeline is acid, alkali, and corrosion-resistant, lightweight and high-strength, with a long service life and high overall cost-effectiveness. Especially ultra-high molecular weight polyethylene pipes, due to their excellent pressure bearing capacity and strong connection, are often used as tunnel escape pipelines.

2、 Specifications and Installation

1. specificationThe diameter of the escape pipeline is usually 800mm, and the length of the pipe section is determined according to actual needs. Common specifications include 15m, 3m, etc. The wall thickness also varies, for example, the wall thickness of polymer polyethylene escape pipes can reach 30mm.

2. Installation：

• The starting point of the escape pipeline is usually at the end of the second lining that has been constructed, and the distance from the end of the second lining should not exceed 5 meters.

• The pipeline is arranged from the lining working face to an appropriate position within 20 meters of the excavation face, and laid along one side of the initial support towards the palm face.

• Pipeline connections can be made using ring clamps, steel lap lock connections, U-shaped buckle connections, etc., and each end connection must be firmly fixed.

• Reserve work ropes inside the pipeline for easy evacuation, emergency response, communication, and transportation of various items.

• During the process of moving the secondary lining trolley into position, the temporary removal of the escape pipeline should be carried out section by section, and it is strictly prohibited to remove it in one go to ensure the effectiveness of the escape pipeline at all times.

3、 Function and significance

1. Prevent accidents from happeningProvided an emergency evacuation route for construction personnel, in case of an accident, they can quickly evacuate to a safe area through the escape pipeline, thereby reducing casualties.

2. Provide a safety barrierEscape pipelines are usually made of high-strength and high toughness materials, which have good impact resistance and pressure resistance, and can to some extent block dangerous situations such as heavy object impact and collapse, providing additional safety protection for construction personnel.

3. Quickly enter the scene of the accidentIn tunnel construction, if there is an emergency situation such as collapse or fire, rescue personnel can quickly enter the accident site through escape pipes to carry out rescue work and improve rescue efficiency.

4. Easy to evacuate and search and rescueThe setting of escape routes makes evacuation and search and rescue work more orderly and efficient. In emergency situations, rescue personnel can search and rescue along the escape route, quickly finding trapped individuals and rescuing them.

5. Dealing with limited spaceThe construction environment of tunnels is usually relatively narrow, and the installation of escape pipes can fully utilize the limited space, providing a convenient escape route for construction personnel.

6. Follow industry standardsInstalling escape pipes during tunnel construction is one of the important measures to comply with industry safety standards and regulatory requirements.

4、 Conclusion

Tunnel escape pipeline, ultra-high molecular weight polyethylene rescue passage, SichuanIt is a safety facility in tunnel construction, which is of great significance for ensuring the life safety and physical health of construction personnel. Therefore, in the process of tunnel construction, it is necessary to strictly follow relevant regulations and standards to set up and use escape pipes to ensure that they play their due role.