Gu Ailing's competition has been postponed, how will the snow affect the Winter Olympic games?
On February 13, snow began to fall in Beijing, which will have a big impact on the Winter Olympic games.
All ice events are held in the venue, completely weather-free, can be played around the clock, 70% of the winter Olympics are snow sports, these snow sports are the most susceptible to weather.
The intensity of the Winter Olympic games is very large, natural snowfall can not meet the requirements of the competition, the current mainly rely on artificial snowmaking, these snow-making "snow cannons" first use high-pressure air to break the water into a fine fog, in the cold air quickly solidified into snowflakes falling, these artificial snow than natural snow density is greater, but even so can not meet the requirements of the direct competition, but also need to use a snow groomer weighing about 6 tons to repeatedly crush, snow can gradually become tighter, to meet the requirements of the game.
Cross-country skiing, biathlon and ski jumping and other competitions have different snow intensity requirements, even cross-country skiing and alpine skiing, the pistes also need to be covered with a layer of artificial snow on top of the natural snow, so as to ensure the hardness of the competition requirements, and to compete on such a tight and stable track can ensure the safety and performance of athletes.
Therefore, Olympic games are generally not played on natural snow (wild snow)!
When there is snowfall during the competition, it will seriously affect the quality of the competition, and even affect the safety of athletes and the event schedule. New snow is generally softer, which will increase the friction of the snow and slow down the speed, which will have a greater impact on some races that require sharp turns and acceleration, such as U-shaped fields, obstacle chases, slope obstacles and other events.
Snowy days are not only snowy, but also matched by bad weather kits: high winds, low temperatures, and low visibility.
Ski jumping, freestyle skiing aerial skills can be held normally depends on the size of the wind speed, generally requires the average wind speed of 1 minute during the competition period<3 m / s, the wind can not exceed 2 levels (2 wind range 1.6-3.3 m / s), almost close to the requirement of static wind. If there is a strong wind, it will affect the athlete's action play, increase the difficulty of landing point judgment and aerial action, and even affect the safety of the athlete.
The difference between alpine skiing and super large slalom events reaches 1 km, and the speed of athletes in the competition can reach 150km, which not only requires less wind, but also requires good visibility, so as to be more conducive to the safety and play of athletes. Visibility is required for > 2 km, 5 minutes average wind speed < 10 m/s, wind level can not exceed 5 (about 8.0-10.7 m/s).
What is more troublesome is that during the snow will make visibility decrease, snow will cover the slopes, the markings are blurred, and it will seriously interfere with the athletes' competition, which can require the top athletes to have strong mental qualities.
#Gu Ailing # #冬奥会 #
