Application Case of High speed Railway Tunnel | Nano porous Thermal Insulation Material, Protecting Track Operation Safety and Temperature Control Stability

High speed railway tunnels belong to enclosed narrow spaces, where high-speed trains generate heat through friction, locomotives dissipate heat, and summer sunlight accumulates heat, resulting in high temperatures throughout the year; At the same time, the fire protection level requirements for tunnels are strict, and after a fire occurs, high-temperature smoke is easily spread rapidly, posing a threat to the safety of driving and personnel. Traditional insulation and fireproof materials have a large thickness and weak insulation performance, making it difficult to balance the lightweight construction, temperature control, and fire resistance requirements of tunnels.

The nano microporous thermal insulation material, mainly made of high-purity nano silica, combines ultra-thin and high-efficiency thermal insulation, A-level non combustible characteristics, and is suitable for multi area protection such as tunnel arches, side walls, equipment rooms, cable trenches, etc., to build a fire and insulation integrated protection system for high-speed railway tunnels.

industry pain points

1. Difficulty in controlling high temperatures inside the tunnel: The enclosed tunnel has poor heat dissipation conditions, and long-term high temperatures accelerate the aging of track equipment and cables, increasing the risk of operation and maintenance failures; Traditional insulation has low efficiency and limited temperature control effect.

2. Strict fire safety standards: High speed railway tunnels have a large flow of people and high difficulty in evacuation. In case of fire, ordinary insulation materials are prone to combustion, releasing toxic smoke and exacerbating safety hazards.

3. Restricted construction space: The reserved installation space for tunnel lining is narrow, and the thick insulation layer occupies the passage and equipment installation position, increasing the load on civil engineering.

4. Complex working environment: The tunnel has a large temperature difference throughout the year, is humid and prone to moisture, and ordinary insulation materials are prone to moisture failure, powdering and peeling, resulting in high replacement and maintenance costs.

Solution

Nano microporous insulation materials are suitable for multi scenario thermal protection in tunnels: lining laying for thermal resistance and temperature stability; Covering cables and distribution equipment to delay thermal aging and block the spread of fire; Used as a fire partition to extend the evacuation and rescue window period; Thermal shielding of trackside equipment to reduce temperature and extend lifespan.

Application Effectiveness

After the use of nano microporous insulation materials, the internal temperature of high-speed railway tunnels has been effectively controlled, and the aging rate of mechanical, electrical, and cable has significantly slowed down; Fire and insulation barriers effectively suppress the spread of fire and enhance the emergency safety level of tunnels; Lightweight design is suitable for limited space in tunnels, reducing the cost of civil engineering renovation, significantly reducing the frequency of later operation and maintenance, and balancing driving safety, energy conservation, temperature control, and long-term economic benefits