Home Sports National Alpine Ski Center starts snowmaking and completes all snowmaking tasks in mid-January next year

National Alpine Ski Center starts snowmaking and completes all snowmaking tasks in mid-January next year

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  National Alpine Ski Center starts snowmaking

  In mid-January next year, all snowmaking tasks will be completed and 11 events of the Winter Olympics will be held.

Yesterday, the Beijing Youth Daily reporter learned from the Beijing Major Projects Office that the National Alpine Ski Center of the Yanqing Division of the Beijing 2022 Winter Olympics officially launched the snowmaking work for the alpine skiing project during the Winter Olympics yesterday.

All snowmaking tasks will be completed in mid-January

According to Liu Lifeng, director of the Yanqing Stadium Construction Department of the Beijing Major Projects Office, because the meteorological conditions in the Yanqing competition area have met the snowmaking requirements, the trial snowmaking work started at 18:00 on the 10th, and the snowmaking equipment was mainly debugged. The official snowmaking started on the 15th, and all snowmaking tasks are expected to be completed in mid-January to ensure that the Beijing Winter Olympics will be greeted in the most perfect state.

The National Alpine Ski Center will be fully completed at the end of June 2021. It has passed many test activities and is fully qualified for the competition. The alpine skiing project is called “the jewel in the crown of the Winter Olympics”. The National Alpine Skiing Center has built 7 tracks to undertake the alpine skiing downhill, super-giant slalom, giant slalom, slalom and other 11 small events in total. 11 gold medals were produced. The 7 tracks are 9.2 kilometers in length, with a maximum vertical drop of 900 meters. This is the first domestic alpine ski track that meets the Olympic standards, and it is also one of the most difficult competition venues in the world.

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According to Wu Gaosheng, Mountain Operations Manager of the National Alpine Ski Center of Beijing Olympic Stadium Operations Branch, the construction unit of the Yanqing competition area, the snowmaking work of the National Alpine Ski Center will be from top to bottom, starting from the departure area at an altitude of 2,198 meters, by the racing training track. The peak area of ​​the technical road begins and gradually advances towards the end area. The National Alpine Ski Center includes racing, competitive track and training track, alpine distribution square, media broadcasting area, starting area on the top platform, racing and competition ending area, etc. The snowmaking team consists of a total of 20 Chinese and foreign personnel. It operates 24 hours a day in two shifts. 170 sets of snowmaking equipment have been put into use. The snowmaking area is about 800,000 square meters and the amount of snowmaking is about 1.2 million. cubic meter. In order to ensure that the top speed of the competitors can reach the sliding speed of 130-140 km/h, the International Snow Federation has strict requirements on the hardness of the piste, so snowmaking has become the most critical link.

The ice-like snow track is divided into two types: racing and competition

According to the requirements of the competition, the surface of the piste must be kept in a crystalline state, which is similar to the ice surface. This kind of snow is called ice-like snow. Ice-like snow can reduce the friction between the snowboard and the slope, making the slope difficult to damage. In the case of athletes turning at high speeds, the surface of the slope can also be ensured to be smooth and smooth, ensuring that the status of the slope is relatively perfect regardless of the number of players on the field, so as to ensure the fairness of the game.

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There are two types of ice-like snow tracks: one is racing ice-like snow tracks. The production of ice-like snow on the racing track requires the staff to open the snow track first, break the snow blocks into a loose layer of about 40 cm, and then inject water with a water cannon. While the water is being poured, the wet snow will be stirred evenly by repeatedly turning the pressure to ensure The thickness of the ice-like snow layer within the snow layer of the track is uniform, and there are no large bubbles. After that, the track is quickly flattened and compacted at low temperature. The snow layer will form a layer of “ice crust” from bottom to top, and the floating snow above , And then the team members of the event operator will shovel away with skis side-slip, and the trimmed track looks smooth as a mirror.

The other is a competitive ice-like snow track. Unlike the previous method of watering the ice-like snow on the racing track, the competitive track uses a water injector to inject water. The water content of the snow layer is preliminarily determined after the ski track has been preliminarily compressed and smoothed and passed through the natural low temperature compaction. After adjusting the water pressure of the water injector according to the water content of the track required by the International Snow Federation, a unique zigzag shape is used The water injection device not only ensures the same water content per cubic meter of snow in the entire course, but also needs to keep the same distance each time, so as to ensure that the entire slope is evenly injected with the same hardness and snow conditions.

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The race track can be reached within 30 minutes by the ropeway

In addition, the National Alpine Ski Center has built a total of 9 aerial ropeways and 2 towing ropeways, with a total length of 10.3 kilometers, connecting the areas of the Yanqing Winter Olympic Village and the Alpine Ski Center, allowing athletes to reach their respective tracks within 30 minutes. The ropeway has the characteristics of advanced technology, fast running speed, and large capacity. The maximum running speed of A ropeway and B ropeway is 6 meters/second, and the one-way transportation capacity is 3,200 people/hour. The spreader is equipped with seat heating function and positioning system. , And equipped with a wireless broadcast media device inside.

Text/Photo courtesy of our reporter Liu Yang/Municipal Major Project Office

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