Water is the source of life, but too much will become a flood. There are many ways in nature to drain water and retain water. For example, plants can absorb and transpirate soil moisture and reduce groundwater, and streams, rivers, lakes and seas are all models of drainage in nature.
Human beings have also done a lot of water diversion and drainage projects, such as Dujiangyan, Hongqi Canal, etc., these will not be described in detail, we will take a look at the various arrangements made by people for drainage from small details.
The more natural ones are the various ditches dug when planting vegetables. If there is no ditch to drain the water, when the soil moisture is excessive, the oxygen in the vegetable roots will be insufficient, which will inhibit root respiration and cause root death.
Furrows in vegetable patches
There are also various drainage ditches on both sides of the road. These are also very particular, the conditions are poor, directly take the soil into a ditch, and some will lay the ditch with cement to prevent the ditch from collapsing or overgrown with weeds.
A drainage ditch on the side of the mountain road
Of course, in order to be safe and prevent people from stepping into the ditch by mistake, many ditches are also laid with various protective facilities. The following are common laying materials.
Concrete-baffle for the square hole of the gutter
Small round hole cement baffle for the gutter
Round-hole iron baffle for drains
Large cement baffles for gutters
Various ditches and pipes pass through the road, so there are also various types of manhole covers distributed on the road for easy maintenance.
Electrical maintenance manhole covers
Rainwater manhole cover 01
Rainwater manhole cover 02
Sewage manhole covers
Many bridges have drainage channels on their edges.
There is a drainage channel along the red line of the bridge
Many slopes are covered with drainage pipes.
Dense drainage pipes on the slope protection
Even better, some vegetable plots and orchards have water reservoirs that drain rainwater into them to save energy.
reservoir
Of course, there are all kinds of wonderful ideas for human beings and drainage, so I won't go into them all.