Nanjing snow-melting agent causes the Yangtze River Bridge to wither

[Abstract] in the event of continuous blizzard Frozen After the disaster, there was a suspected pollution of drinking water source caused by chlorine salt and snow melt in Guangdong. The "sequelae" of heavy snow also plague Nanjing. Due to the melting of ice and snow, rolling of vehicles and machinery, the Yangtze River Bridge that has just been repaired has once again become a "riddled with holes". The side effects of the snowmelt agent have also appeared, some track trees and green belts are withered and yellow; as to whether soil salinity is caused, it has not yet been observed.

After a rare and sustained blizzard and freezing disaster, some areas in Guangdong experienced suspected water pollution caused by the use of chlorine salt and snow. Although the water source has not been tested, the "sequelae" of heavy snow also plague the ancient city of Nanjing-due to the melting of ice and snow, Vehicle And mechanical rolling, just recently overhauled Nanjing Yangtze River Bridge highway and bridge surface again "a thousand holes"; the side effects of Chlorine Salt and snow melt agent has also appeared, some of the road trees and green belts withered yellow.

The anti-skid force of the tie chain is "more than 8000 pits"

Since January 26, Nanjing In the face of sustained serious blizzard attacks, some urban roads have produced many pitfalls due to the erosion of snowmelt agents, large snow scanning machinery, and the rolling of anti-sliding chain vehicles, which has a great impact on road traffic capacity.

 
 
 
Morning Post reporter learned from the municipal public Bureau yesterday that the Bureau's Municipal maintenance staff recently conducted a survey of the city's urban road potholes, found a total of more than 8000 road potholes; subsequently, the Department used asphalt, concrete, and other methods to fill and repair the potholes as much as possible.

The Nanjing Yangtze River Bridge, which has already been overwhelmed, has not been spared. After the blizzard, it has added a "new injury": due to heavy snow, the Nanjing Yangtze River Bridge and the three bridges connected to the expressway have been closed one after another, the bridge became the only channel for the city to cross the river at that time, many large Vehicle The anti-skid iron chain seriously damaged the bridge deck. As a result, the bridge deck was "riddled with holes" again after several years of continuous repairs ".

On September 16, last November, an expert from the Nanjing bridge section of the Shanghai Railway Bureau conducted a load test and "Remedy" the problem for more than two weeks. However, this heavy snow has once again aroused people's attention to its "Physical Constitution" while demonstrating the importance of the bridge. Although the city repaired the bridge from north to south in February 4, there are still a large number of pits on the bridge deck, and the vehicles are shaken by bumps when they pass through the bridge under the South fort, many passengers who used to use the bridge were even surprised for the first time.

The roadside plants are yellow and withered.

In order to minimize the impact of blizzard on travel, Nanjing also uses lightning in addition to snow. According to the city's emergency management office's records on the city's snow disaster prevention work, at the end of January, the city's Salt Department mobilized more than 2500 tons of salt for the snow, only from the night of January 27 to noon on the 28 th, the city has sprinkling more than 470 tons of salt and 180 tons of anti-skid materials. Although the real-time monitoring of the Jiangsu Provincial Environmental Monitoring Center Station shows that the snow-melting agent has not affected the drinking water source in the province, many roadside plants have been affected due to the accumulation of snow after Chlorine Salt.

Some people found that camphor tree, one of the city's street trees, was still lush before the heavy snow, but now there are signs of yellow leaves; Holly in the roadside bushes, Ye Huang Yang and some have even withered. Chen Lei, Deputy Chief Engineer of the city's garden and Forest Bureau, said in an interview with the Morning Post reporter that large-scale use of chlorine salt and snow melt agents may cause soil salinity and affect the survival of street trees and green belts. However, the specific impact has not yet been observed. According to reports, the Bureau intends to comprehensively monitor the soil settings next to the main roads in the urban area. "However, if the soil is contaminated, there is no good remedy. It is not realistic to replace the soil in a large scale. We recommend that the relevant departments use less chlorine salt and snowmelt agents for snow removal in the future ." Said Chen Lei.

Due to the large amount of snow falling, many of the snow in Nanjing is still not melted, and accumulated on the side of the road. The city's city and content Bureau officials told reporters that at present, the snow on the side of the road is usually sprinkled with salt, and many are mixed with garbage, the Bureau asked it to treat it as garbage disposal, Landfill. However, some sanitation workers put it into the well to save trouble. People said that salt-containing Snow is not too serious for pipeline corrosion, and will be treated with domestic sewage after ablation.