Ten years ago, the paper mentioned the problem of Beijing-Guangzhou tunnel. 20 1 1 Wang Jijun and others from Zhengzhou municipal engineering survey and design institute published a paper on flood, which clearly pointed out some problems of Beijing-Guangzhou tunnel, as well as the blockage of sewer pipes and the failure of drainage pumps. After the rainstorm, a lot of accumulated water in the tunnel has been removed, and there are a lot of garbage bags and dirt in the tunnel, and there is also a lot of silt in the sewer, which leads to accumulated water in the tunnel, which is easy to cause congestion of surrounding roads and flood.
The drainage pump of the sewer in Beijing-Guangzhou tunnel did not play a role in drainage. According to relevant media reports, the Beijing-Guangzhou tunnel is 4.3 kilometers long. A viaduct is erected on the tunnel, which is close to the large commercial area of Zhengzhou Railway Station, and it is a place where people gather. 10 years ago, the paper also pointed out that due to natural terrain and drainage, when a large amount of rainwater enters the tunnel, it will cause traffic congestion, casualties, motor vehicles and other problems, which will bring many inconveniences to people's lives.
The Beijing-Guangzhou tunnel in Zhengzhou is located in a low-lying area. When a large amount of accumulated water is higher than the local river level, it will cause flooding in the tunnel. As early as ten years ago, the paper pointed out that once the flood enters the tunnel, the drainage capacity of the drainage system and drainage pump in the tunnel will decrease obviously, and prevention and improvement should be strengthened.
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