In recent days, Henan Province has experienced continuous extreme heavy rainfall. Zhengzhou, Jiaozuo, Xinxiang, Luoyang, Xuchang, Pingdingshan and other cities have experienced heavy rains and heavy rains. The situation is very serious. The extreme rainstorm in Henan Province this time is extremely rare, and the intensity of the rainstorm in the provincial capital of Zhengzhou in a short period of time is once in a thousand years.

The extreme heavy rainfall in Henan this time was mainly concentrated in the central and northwestern regions, such as Zhengzhou, Jiaozuo, Xinxiang, Luoyang, Zhoukou, Xuchang, Pingdingshan and other places. The intensity of heavy rains in Zhengzhou is extremely rare and record-breaking. Zhengzhou's rainfall reached 624.1 mm in one day on July 20, while the average annual rainfall in Zhengzhou in previous years was about 600 mm, which means that the previous year's rain fell all in one day.

The heavy rainfall centers are mainly distributed in the western and northwestern Henan Province. Not only Zhengzhou, but also other parts of Henan are also very intense. Except for Shangqiu and Puyang, where the rains are moderate to heavy, they are all at least heavy rains. What harm might this heavy rainfall in Henan Province cause?

First of all, it may cause landslides, road collapses and other geological disasters, and dam breaks in river embankments and reservoirs. The collapse of houses and walls, communication, power supply, and water supply will all face difficulties, which will have a great impact on people's lives.

In addition, there is another very important point, that is, possible traffic disruptions, roads, railways, and flights will all be affected to varying degrees.

The traffic interruption in Zhengzhou may cause the interruption of Beijing's arteries, and the impact on the whole country is particularly huge. Even in this case, with China's strong infrastructure construction capabilities, we fully believe that the Zhengzhou area can return to normal production and life as soon as possible.

Here, we need to remind construction workers and rescuers everywhere that they need to pay more attention to safety when using construction machinery. Because after such a heavy rain, the dirt and oil on the road are mixed together, making the road more slippery and weakening the vehicle system. power.

Why is the grip on wet roads worse than dry roads? This is because the dry road surface is actually rugged, and sometimes we even deliberately set particles on the road to increase friction in order to maintain the grip of the road. However, on wet roads or roads that have just rained, stagnant water will fill up the uneven roads. When the tire is passing fast, if it is too late to drain the water, it will affect the tire's grip.

In addition, the tire itself will be covered with a water film on the tire surface under the influence of high-speed rolling and air resistance. The water film will greatly reduce the adhesion between the tire and the ground. If the accumulated water on the surface of the tire and the pattern cannot be drained in time, the probability of water film generation will be greatly increased, which will seriously affect the grip of the tire and the braking distance of the vehicle.

How can tires get rid of the water film and drain the water on the tire surface in time? The tire pattern is particularly important. Generally speaking, the grooves designed on the tire surface can effectively drain the accumulated water on the tire surface and increase the tire's grip-similar to the NZBS706 series solid tires provided by Shanghai Decadura, which is conducive to the use of water on the road.