The technology of artificial snow making was blocked by foreign countries, and it only took China five years to make a breakthrough to host the Winter Olympics

2022-07-26 0 By

Preamble The Winter Olympic Games is in full swing, as an international sports event the Winter Olympic Games is naturally attracted the attention of the people.It was also the first time for China to host the Winter Olympics.So the Winter Olympic Games as a sport on ice and snow, naturally is inseparable from the snow.In particular, during the First international test event of the Beijing Winter Olympics, the IAF, snowboard and slalom World Cup, many athletes praised genting ski Park for its snow-making and field repair abilities.I’m sure some of you noticed one detail here: “snowmaking,” that’s right, “making.” The snow we’re using in the Winter Olympics is not natural snow, it’s artificial snow.So why do we use artificial snow?Is there not enough natural snow for us?Or is artificial snow better?First of all, we know the full name of the Winter Olympics is the Winter Olympics, which means it belongs to the Olympic Games.And what is the slogan of the Olympics?”Faster, higher, stronger”, the high speed impact and snowboard chase after the landing of ski jumping in the Winter Olympics, the rapid pursuit of skiing has high requirements for the site, so it needs the piste to have high impact resistance and pressure resistance.And natural snow large porosity, low density, low strength, metamorphism and natural snow on the bottom of the ladder temperature, easy formation porosity but compressive ability of condensed matter deep frost, this leads to the diving platform jump after snow ground easy forming on the pit and the impact crater, which is unable to withstand a ski and veneer chasing such demand, high impact and high pressure for the game and safety has great influence,Even if the natural snow is compacted by a snow press, it cannot meet the competition requirements.In addition, the DOCUMENT “Design Requirements for Freestyle Skiing and Snowboarding Venues for the 2022 Winter Olympic Games” of the International Snow Federation clearly states that the slalom course needs about 71,500 cubic meters of snow, plus the melting factor, it will need 107,200 cubic meters of snow.Even smaller tracks like the big jumps require at least 11,000 cubic meters of snow.So it’s almost impossible to get this amount of snow using natural snow.On the other hand, the track of the Winter Olympics is not built in the flat plain area, but in the mountainous terrain with complex terrain. It is not practical to transport snow from other areas, and the transportation cost is too high.For example, a natural snow 3 meters thick area, after the snow press compacted, can also be pressed into 30 cm to 40 cm thick snow layer, then how much snow, I can not imagine.So natural snow simply doesn’t form the “ice snow” standard needed for alpine skiing at the Winter Olympics.There’s a new term, isn’t there? What is “icy snow”?”Ice snow” is the special snow used for laying the track in ski events.It’s like fog, like rain, like wind.This “icy snow” is both like ice and like snow.The density of natural snow is between 0.05 and 0.15 per cubic centimeter, and we’ve all seen natural snow fall when we step on it, especially soft like cotton candy.Our “ice snow” is different. It is five to 13 times denser than natural snow and has a very thin layer of ice on its surface, so it looks both like snow and ice.Therefore, the surface of the track paved with “ice snow” is actually in a crystalline state, like ice, but not too hard, which fully meets the REQUIREMENTS of the International Snow Federation for the thickness, hardness, density and surface temperature of the track.Snow particle size and water content and a series of requirements.The first Winter Olympics were held in Chamonix in 1924, which went well before cars and the greenhouse effect was known.The Antarctic ice sheet has not yet melted, and there is no shortage of snow.However, in the second session of the winter Olympics came surprise, st moritz, Switzerland, in 1928 to hold the next Olympic winter games, because the Swiss snow less a year, the winter games many direct project has been cancelled, and the rest of the project more or less influenced by different degree, such as 50 km cross-country skiing,Some sections were so snow deficient that the dirt leaked out, resulting in the champion using more than an hour longer than the previous race.At this time let everyone understand, the Winter Olympic Games this matter can not always depend on the weather, but at this time people did not have a good way to solve this matter, and then held the Winter Olympic Games at the same time began to study artificial snow, a flash is decades.Artificial snow was first used for the 1980 Winter Olympics in Lake Placid, and has been used extensively since vancouver, Sochi and the last winter Games in Pyeongchang.In particular, 90 percent of the total snow used in the PyeongChang Winter Olympics was artificial snow.Some of the venues in Beijing are 100% artificial snow, while the venues are a combination of natural and artificial snow, such as Genting, which is 60% artificial snow.It can be seen from here that with the more mature of the Winter Olympics, the track and snow quality requirements for the competition venues are getting higher and higher. In the Winter Olympics, artificial snow has become an important “protagonist”.But even this seemingly simple process of making snow is something we’ve only just cracked.Snowmaking technology used to be locked down, but now we’re the benchmark.Five years ago, many Chinese experts knew little about “icy snow”, let alone making it, let alone laying a qualified track for the Winter Olympics.This is also because there are too few international ice and snow competitions held in China and there is no experience, leading to the start of China’s ice and snow research lagging behind western countries.We never lack of talents who like to learn and study, but the Western countries are blocked to us, and even we can’t even know the parameters of the snow track.So before 2016, China’s track snow service technology is almost a blank sheet of paper.As long as the mind does not slide, the way is more than difficult!Qin Dahe, a member of the Chinese Academy of Sciences, and Wang Feiteng, a researcher at the Northwest Institute of Eco-Environment and Resources of the Chinese Academy of Sciences, joined the team.Between 2019 and 2021, the team began experimenting with making icy snow.The process is called “Frozen Beauty”, and temperatures in the test area are extremely low, reaching more than minus 20 degrees Celsius at the coldest point.In this environment, the r&d staff stay for more than ten hours at a time.To us laymen, the process couldn’t be simpler. You can create artificial snow by spreading it and filling it with water.But the actual details we don’t know at all, how thick is the snow?How much water for how long?And what are the requirements for water?These parameters are not allowed to be seen by western countries.Normally, well water, river water, pure water, reclaimed water, rain water and snow melt water can be used to make snow, but there is still a standard, including a range of water temperature, which must be between 0 and 5 degrees Celsius, because the water temperature is too high to make snow, and too low to make snow.The water should not be too dirty, because the filter device of the snow maker has limited working capacity, and dirty water will block the filter screen and nozzle.But none of these failed us, and the research and development team really did it.In 2019, the International Olympic Committee came to Beijing to inspect the site construction progress of the Winter Olympic Games and the snow situation of the track, and saw China’s “ice snow” is unable to stop the thumbs-up, full of praise for our track, but also for China’s snow making technology expressed very recognition.We also strive for perfection, because each competition event has different requirements for the venue, so we made fine snow for the venue and designed nine different types of artificial snow to create the best venue for the competition.Although the process of artificial snow consumed water resources at the same time, but we also do the recycle, make artificial snow once again return to the nature, as long as the plan for this area of the basin design, can make the melting snow into the reservoir or in the mountains, actually it is not just the games, even a lot of ski resorts will be recycled water this aspect into consideration,These are costs, after all.Conclusion after Beijing successfully host the winter games is also became the world’s first “double the city”, Beijing Olympic winter games in preparation for construction stage and events all held by the attention of the world, we broke the snowmaking technology do the same on the premise of the green environmental protection, the environment problem increasingly serious situation, let you see the Olympic Games is not only a competitive,Is the green Winter Olympics, is the winter Olympics of environmental protection.