For the harvest of the earth
Shijiazhuang power supply section zhaozhihu
Central Television Network Harbin December 4 (reporter qiaorenhui correspondent Ji Pengfei) recently, China's first large-scale high-speed railway running through the alpine region, with a total length of 921km, Harbin Dalian high-speed railway ushered in its seventh birthday, running 43.2 million kilometers in total, enduring more than 2500 days and nights With the test of severe cold and heat, ice and snow, the transportation is safe and stable.
the achievement of any achievement is hard won. It has come from numerous failures and setbacks step by step. Only those who persist to the end are the strong ones in life. Harbin Dalian high speed railway is the first high cold high speed railway in China and the world. It can be built successfully and put into operation, and the transportation is safe and stable for 7 years. This is a great miracle created by the Chinese people and a major breakthrough in China's high speed railway technology. There is no experience that can be used for reference in the construction of such a large-scale high-speed railway. All the data needed for the construction should come from the field survey and test on site, just like crossing the river by feeling the stones, step by step. The snowfall in Heilongjiang Province is as high as 62 mm, and the outdoor temperature in the coldest weather is more than - 40 degrees below zero. Under such bad weather conditions, the train speed reaches 300 kilometers per hour, and its difficulty can be imagined. If the train breaks down in a cold and snowy place, the consequences are unimaginable. Therefore, the technical requirements for building high-speed railway under such conditions are almost harsh. In the face of difficulties, there is no shortcut. Chinese railway builders are using their wisdom and hard work to solve problems one by one. According to statistics, during the construction of Harbin Dalian railway, they carried out 19 cold proof technical transformation, 25 adaptive transformation and 25 optimization transformation on key parts of locomotives. 113 research projects have been carried out, and 12 measures have been taken, such as "changing the arc of apron to straight line", "blocking the snowboard", "turning up the water injection port", "adding protective cover" and "installing diversion pipe", which effectively reduce and prevent the problems of ice and snow accumulation. It is the continuous application of these advanced technologies that makes the impossibility possible and provides a solid technical guarantee for Harbin Dalian high speed railway.
secondly, the safety risk control after the completion of high-speed railway is also a very big test. In the high cold area, how to control the risks of ice and snow, foreign body strike, extreme cold environment and cold heat alternation? From the beginning of operation in 2012, we implemented two operation maps in winter and summer, and operated EMU trains at two speed levels of 200 km / h and 300 km / h respectively. From December 1, 2015, we implemented "one operation map in winter and summer" and operated at 300 km / h throughout the year. Harbin Dalian high speed railway gradually matured, among which countless railway people worked hard and worked together to make the high speed railway go this way How smooth. At the time of snowstorm, all the railway workers went to the battle to manually clear the ice and snow, and successfully cope with the test of snowstorm. Wash the snow on the lower part of the bogie with the high-pressure hot water car researched by myself, and clean the ice on the bogie with the self-made rubber hammer. The ice and snow melt into water flowing on their faces, bodies, and sweat on their bodies, which is frozen into ice again. It's hard to understand the taste without experience. On the 7th anniversary of
, 2500 days and nights, Harbin Dalian railway has successfully withstood the test, and its success has accumulated valuable experience for China and even the world's high-speed cold railway. It is people's wisdom and selfless dedication that make Harbin Dalian railway become a "steel warrior". Facing the wind and the snow, it flies in the cold and dedicates its warmth and love to thousands of families. It is like a flag, flying in the wind under the protection of the flagman, bringing people infinite warmth and reverie.