Two support for the flood conditions are inhaled into the culvert, in fact, this is a kind of water

Science Fiction Network June 14th (Liu Yazhu) According to people's video reports, on the afternoon of the 13th, Guangdong Heyuan had a sudden flood situation. Water pipes, the deputy captain seized the rescue of the two of them, and found that they were abused by varying degrees.

(Picture source: Baidu Encyclopedia)

What is Handong? Why is it so dangerous? It is reported that in ancient times, Hanyun was a cave -type water conservancy facility with a gate to regulate the amount of water and belongs to a small leakage structure. Today, as an important part of highway engineering, Hanyun mainly has the effect of rapidly eliminating surface water along the road to ensure the safety of the roadbed.

In order to not prevent traffic, culverts are set up under the roadbed and built below the pavement. It can be divided into non -pressure -free culverts, semi -pressure -type culverts, and pressure -type culverts. It builds tube, box, arched, and cover culverts according to the principle of connectors.

Citrus caves are usually composed of two parts of the cave body and cave entrance. The cave body forms the main body of the water hole. Of course, the culvert and the bridge are different. Generally, the span of 5 meters or less is a culvert. At the same time, there are filling soil above the culvert. Essence

Citrus has a role in an overwater channel in ordinary weather, but at the moment, it should be far away from Hantong, especially heavy rain and floods to avoid irreparable consequences of being "inhaled".

- END -