The cause of serious water accumulation in Weihui, Henan Province has been found.
It is reported that there are four main reasons for the serious water accumulation in Weihui City, Xinxiang.
First, the geographical location is prone to water accumulation. Weihui City is located at the intersection of Weihe River and Dongmeng Jiangnv River. Low-lying, it belongs to the water gathering area in the upper reaches of Weihe River. Once there is a rainstorm and flood, it is easy to accumulate water.
Second, the local rainfall is large, resulting in more accumulated water. 17 On June 24th, the average rainfall from Hehezha to Weihui in Xinxiang was 550mm, and the estimated water output was 65,438+85 million cubic meters. A large amount of rainwater can't be drained, forming stagnant water.
Third, the water level in Weihui section of Weihe River remains high and the drainage is not smooth. The Jixian Hydrological Station in Weihe River has exceeded the guaranteed water level since 23: 00 on the 22nd, and it still exceeds the warning water level, which continues to be high, and the accumulated water in the urban area has not been discharged into Weihe River smoothly.
Fourth, the producer canal of Weihui overflowed on the right bank and flowed into the urban area. * * * The execution exit of the right dike 1. 1 km upstream of Muye Bridge of Producer Canal was successfully blocked at 8: 58 on 26th. During this period, the flood of the producer canal entered the Weihe River, which increased the flow of the Weihe River and raised the water level. At the same time, part of the flood flows downstream along the dike and enters Weihui City.
To sum up, the reasons are superimposed, resulting in serious water accumulation in Weihui.
How is the road surface water formed?
(1) The pavement and floor are uneven and partially sink;
(2) The vertical and horizontal slopes of pavement and paving are unreasonable;
(3) The collecting well or drainage pipe is blocked by garbage, which slows down the flow rate and makes it difficult to discharge road water in time, resulting in water accumulation;
(4) The design elevation of the drainage well is incorrect, the branch pipe falls into the water, and the elevation of the collecting well is higher than the surrounding road surface, so it is difficult to discharge the road surface water in time, resulting in water accumulation;
(5) The artificial chisel depth of anti-skid stone is inconsistent.
(6) The greening soil around the tunnel is higher than the road surface, so as to avoid soil infiltration into the road surface in rainy days or during greening maintenance, which will affect the cleanliness of the road surface.
How deep is the water? You can't go there by bike.
When the water depth reaches one-third of the height of the tire, it can pass safely. When the water depth exceeds half the height of the tire, you should be careful, because it is easy to cause water in the car. If the wading depth exceeds the bumper, be vigilant when driving to avoid water from the engine. If there is water in the car engine, never start the car again, otherwise it will do great harm to the car.
How to drive with water on the road?
The first thing is to pay attention to the depth of water accumulation and braking to prevent engine flameout and brake failure. On rainy days, there is water on the road, so be sure to pay attention to the water depth. If the water depth exceeds the height of the exhaust pipe, the vehicle will easily stall, so try to take the shallow water route. If you don't go through the road with deep water, the water depth is more than half the height of the tire, the driver can wade carefully; Pay attention to the foot brake and hand brake after immersion, because the braking efficiency may be weakened after immersion. If the proven water depth exceeds the whole tire, it is not suitable for wading, otherwise the engine of the vehicle will easily stall. At this time, you must detour or wait until the water depth becomes smaller before wading through. The second is to understand the road conditions of the stagnant water section. On rainy days, the water on the road surface is muddy, but if it is not a fast-flowing water surface, we can still judge the general situation of the bottom of the water by observation. Generally, there are obstacles such as big stones in places where there are waves and eddies, while places where the water surface is calm are generally deep, the water surface is open, and even there are broken waves. Generally, they are shallow layers with broken stones at the bottom, which is an ideal place for driving through. In addition, it should be noted that during or after the rainstorm, the genes of shoulder and pavement are soaked and washed by rain, which may soften or even collapse. At this time, you must be careful to drive and wade to avoid rollover and traffic accidents. Finally, when the car wades, it is necessary to protect the electrical appliances and air inlets of the car. Before wading, it is best to check all the devices in the engine compartment, and it is best to seal the exposed electrical appliances and wiring connectors. If necessary, it is necessary to change and adjust the position and height of the air inlet and air outlet of the engine. The moment the car enters the water should be as smooth as possible. If it is flushed, it will stir up water, which will easily wet the automobile electrical appliances, or water will enter the air intake system of the engine. Therefore, when driving on wading roads, it is necessary to downshift first, reduce the vehicle speed, and keep the engine speed at about 4000 rpm, so as to exert the torque of the engine to offset the resistance and maintain a stable and uniform vehicle speed. At the same time, be sure to control the throttle and don't slam it, otherwise the resistance will increase, the tires will slip easily, and water droplets may be inhaled because of the sudden increase in engine intake.