Harbin Dalian high speed railway, the first high-speed railway in China, is celebrating its 7th birthday

Harbin, CCTV, Dec. 4 (reporter Qiao Renhui, correspondent Ji Pengfei) recently, China's first high-speed railway across the alpine region, with a total length of 921 kilometers, ushered in its 7th birthday. It has run 43.2 million miles, withstood the test of more than 2500 days and nights of severe cold, heat, snow and wind, and transportation safety Continued stability. As the first Alpine high-speed railway in China and even in the world,

has rich achievements in scientific and technological innovation after seven years of bold exploration, accumulation of experience and independent innovation without any experience to learn from. Harbin Dalian high speed railway is located in the alpine zone, with heavy snow in winter, especially in Heilongjiang Province, where the snowfall is up to 62 mm, the weather conditions are bad and the failure rate is high, which brings great difficulty to EMU maintenance. In order to ensure the safe operation of Harbin Dalian high speed railway, Harbin EMU and Changke Co., Ltd. jointly carried out 19 cold proof technical transformation, 25 adaptability transformation and 25 optimization transformation on the bogie, running part, braking facilities and other key parts of crh380bg EMU used by Harbin Dalian high speed railway. Aiming at the problem of ice and snow accumulation in bogie, car body and other parts, 113 research projects were carried out, and 12 measures were taken, such as "changing arc of skirt plate to straight line", "adding blocking of snowboard", "turning up of water injection port", "adding protective cover", "adding diversion pipe", which effectively reduced and prevented the problem of ice and snow accumulation. After more than seven years of practice and exploration, the safety assurance system of high-speed railway with high temperature and cold is more perfect. From "diagram change" to "diagram change", in order to adapt to the change of high cold and ensure the safe operation of EMU, the change of train operation diagram has been carried out twice. In the early stage of operation in 2012, two operation diagrams of winter and summer will be implemented, with EMU trains running at 200 km / h and 300 km / h respectively. From December 1, 2015, "one operation diagram of winter and summer" will be implemented, with 300 km / h operation throughout the year, laying a foundation for the smooth opening and operation of high-speed railway in Harbin, qihar, Harbin, Mudan and Harbin Jiaxing. Based on the four aspects of ice and snow, foreign matter hitting, extremely cold environment and alternation of cold and hot, Harbin EMU has made 39 risk points and 119 control measures. The safety risk of the EMU is more controllable, which has accumulated noble experience for China and the world. In the past seven years of operation, the company has withstood the severe test of ice and snow in the high cold, with more complete operational safety control measures to cope with the high cold and ice and snow weather.

in view of the large temperature difference across regions during the operation of Harbin Dalian high speed railway, the Snowstorm Weather in winter, the serious ice and snow accumulation on the bogie, and the potential safety problems, Harbin motor car section overcomes the difficulty of personnel tension. Under the condition of large amount of snow and dense arrival of motor cars, the two pipes work together to start the artificial ice and snow removal and the only ice and snow removal device for motor cars on the whole road Carry out ice clearing and snow removal, and successfully deal with the test of wind and snow. "In 2013, it snowed for three days and three nights. The cadres and workers lived in the unit. They worked hard for three days and three nights to clear the ice and snow. They were tired and sleepy. But none of the cadres and workers retreated or cried out. When cleaning the ice and snow of EMU bogies, four people clean one car for one hour, wash the snow under the bogie with their own research high-pressure hot water car, and clean the ice on the bogie with a self-made rubber hammer. The ice and snow melt into water flowing on the face, body and sweat on the body. That's really a bad taste. To tell you the truth, we really love and hate snow, and have a complex feeling. "When talking about the blizzard six years ago, Tian He, Secretary of the general Party branch of Harbin bullet train maintenance workshop, still remembers and feels deeply. According to statistics, in the past seven years since the opening and operation of Harbin Dalian high speed railway, 103 trials of snow and wind have been successfully dealt with. Only Harbin Dalian high speed railway has launched 11 level III and level IV plans for snow and snow, applied more than 10000 sets of ice and snow clearing equipment, dispatched more than 40000 people, and 1142 trains of 11536 ice and snow clearing equipment, effectively ensuring the safe and punctual operation of the motor train, and realized the service of "safe, convenient and warm travel" for passengers Objective.