1. Project Background

According to relevant statistics, wind-blown snow hazards are primarily distributed across the Eurasian continent, North America, Greenland, and the Antarctic ice cap, occurring frequently. In China, these hazards cover approximately 55.2% of the total national area, with the most prevalent areas being stable snow accumulation regions characterized by high latitudes, high altitudes, and significant terrain fluctuations. The impact of wind-blown snow on road traffic is particularly severe, especially in regions such as the eastern Tibetan Plateau and surrounding mountainous areas, the Altai and western and northern Tianshan Mountains in Xinjiang, the northeastern and Inner Mongolian plateaus, and mountainous areas with glacier development. Due to their geographical location in regions of strong winds and severe cold, these areas experience frequent blizzards, severely obstructing traffic.

2. Solution

Starting from the perspective of strong winds, one approach is to establish “road windbreaks” at a certain distance on one side of the road in the predominant wind direction, fully utilizing the principles of aerodynamics and fluid mechanics. When strong winds pass through these windbreaks, phenomena such as separation and attachment occur behind them, forming disturbances in airflow, which reduces the wind speed on the leeward side of the windbreaks. This creates a zone of high wind outside the windbreaks and low wind inside. With significantly reduced wind speed, the snow-carrying capacity and amount of snow carried by the wind are greatly reduced. As a result, an open area between the windbreaks and the road accumulates snow. Additionally, “snow barriers” can be installed on one or both sides of the road in the predominant wind direction to change the dispersal trajectory and deposition area of wind-blown snow, facilitating the passage of wind-blown snow and preventing snow from burying the road, thus ensuring smooth traffic flow. In regions with exceptionally heavy snowfall, “anti-snow accumulation facilities” can be installed to prevent snow accumulation on the road surface. This comprehensive solution integrates wind protection, snow diversion, and prevention of snow accumulation.

3.Application

This solution is widely applied to highways and railway roads in areas prone to wind-blown snow and sandstorms, ensuring safe driving conditions. It has been implemented in various projects, including the Lanxin Railway Line 2 and others.