Snow Removal on Railway Transport: Strategy for Protecting Steel Railways

Ensuring uninterrupted train movement during the winter period is a complex logistical and engineering task. Unlike road infrastructure, railway infrastructure is vulnerable not only to snow on the track but also to icing of the contact network, snowdrifts in cuttings, the formation of snow dunes on stretches, and avalanche danger. The fight against snow here is proactive, combining powerful specialized equipment, continuous monitoring, and clear protocols of action.

Primary Threats and Strategies for Combating Them

Track snowdrifts and the formation of snow drifts.

Threat: Snow blown by the wind can completely block the track, posing a risk of train derailment, damage to running gear, and blocking of movement.

Equipment and methods:

Snowplows: There are ram (light, for fresh snow), rotary (heavy, for compacted drifts), and auger-rotary (most powerful). Rotary snowplows (such as Soviet SM-2 or modern PSS-1M) are the "kings" of clearance. Their augers grind the snow, and the rotor throws it 20-50 meters away from the track.

Plow snowplows: Installed on locomotives or special wagons for clearing tracks of fresh snow of low height.

Interesting fact: In the extreme north (Yakutia, the Kola Peninsula), permanent snow protection screens and galleries — a kind of "tunnels" through which the railway passes — are built at the design stage to protect tracks from snow drifts.

Icing of switch points and the contact network.

Threat: Ice blocks the mechanism of switch points, disrupting routing. Icing of the contact wire leads to a loss of contact with the collector, sparking, and breaks.

Equipment and methods:

Switch heaters: Gas (propane-butane) or electric systems built directly into the switch structure. They are activated automatically by temperature and humidity sensors.

Train defectoscopes and snowplows with special equipment: Modern diagnostic complexes (in Russia — PDK/PDM) combine the functions of track cleaning and blowing switches with compressed hot air. Specialized wagons-defectoscopes and passenger electric locomotives equipped with anti-icing systems (such as impulse heating of the wire) are used for the contact network.

Manual treatment: In critical situations, track workers manually clean switches and apply liquid or gel anti-icing compositions that do not cause corrosion.

Snow avalanches in mountainous areas.

Threat: Complete destruction of the track, derailments (tragedy on the Saint-Gotthard Pass in Switzerland in 2010).

Methods: Construction of avalanche protection galleries (as on the Trans-Siberian Railway in the Baikal area or on Alpine roads), preemptive avalanche release using artillery fire or explosives (practiced in Switzerland, Austria, Russia in the Northern Caucasus), and installation of snow-retaining barriers on slopes.

Organization of Work: The Principle of Continuous Preparedness

Snow removal on railways is a round-the-clock process during the winter, not a reaction to a specific snowfall. The dispatcher service plays a key role, based on data from meteorological stations installed along the tracks and patrol locomotives, deciding on the dispatch of snow removal equipment.

System of echelonment: The most responsible sections (mountain passes, approaches to large junctions) are protected first. Snowplows can work in a "caravan": first, ram or plow, then rotary to eliminate residual drifts.

"Winter schedules": In many sections with a severe climate, special schedules are introduced, providing for increased intervals between trains for cleaning "windows" or reducing speeds.

Examples of Advanced Practices Around the World

Japan (Hokkaido Island): To protect against abundant snowfall on the Hokkaido Shinkansen line, a comprehensive set of measures is used: fully enclosed galleries on mountain sections, heating of tracks and switches, as well as powerful rotary snowplows capable of working at high speeds. The trains have a special streamlined shape that minimizes snow accumulation on the track.

Switzerland (Alps): Mountain roads (such as Berninabahn or Jurabahn) are protected by tens of kilometers of avalanche protection galleries and canopies. Automated weather systems are used, giving the order to close sections in avalanche danger. Compact rail-mounted snowplows are used for cleaning stations and tracks.

Russia (Trans-Siberian Railway, BAM): Here is one of the most powerful parks of snow removal equipment in the world, including legendary steam-powered rotary snowplows in the past and modern PSS-1M. Work is organized on a section basis: each section of the track is assigned its own equipment and teams, allowing for rapid response to drifts in conditions of extremely low temperatures (down to -50°C) and "snow puffs" — especially loose and voluminous snow.

Economic and Technological Challenge

Maintaining winter readiness for railways is incredibly costly. A modern rotary snowplow can cost several million dollars. The energy costs for heating switches and stations are enormous. Therefore, today, the focus is on forecasting and preventive measures:

Use of thermal imagers and sensors for monitoring the condition of tracks.

Development of new hydrophobic coatings for contact wires.

Application of geographic information systems (GIS) for modeling avalanche and drift hazards.

Conclusion

Snow removal on railway transport is not just clearing the track but a comprehensive system for ensuring safety and regularity of movement in extreme conditions. It has evolved from manual labor and steam-powered snowplows to a high-tech industry where powerful mechanics are combined with precise automation and preventive engineering. Success here depends on the triad: specialized equipment, pre-infrastructure protection, and impeccable logistics of winter work. This titanic, often "off-screen" work allows steel railways to remain the most reliable mode of transport in any, even the most severe winter.
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