Can farmland drainage ditches flow away without slopes?

Farmland drainage ditches have no slope and water can flow away, but the flow rate will be very slow and may even stagnate. This is because the water, without a slope, does not have enough power to propel it to flow. If the drainage ditch does not have a slope, water will accumulate in it, forming puddles or ponds, which can have a great impact on the production of the farmland.

First of all, puddles or ponds can cause the soil to become overly moist and affect the growth of crops. Overly moist soil can deprive roots of oxygen, affecting the uptake of nutrients and water by plants, which can affect crop growth and yield.

Second, puddles or ponds can also lead to the loss of nutrients from the soil. When water from puddles or ponds evaporates or leaks into the soil, it takes nutrients away from the soil, resulting in poor soil and affecting crop growth and yield.

Eventually, puddles or ponds can also become breeding grounds for pests and diseases. Water in puddles or ponds attracts a variety of insects and bacteria, which can harm crop growth and yield.

Therefore, in order to guarantee the production of farmland, the drainage ditch must have a certain slope to ensure that the water can flow smoothly. When designing the drainage ditch, the slope should be reasonably set according to the terrain and drainage needs to ensure the smooth and effective drainage ditch.

No, drainage refers to artificially controlling the flow direction of water and manually draining water. Measures to eliminate and dispose of excess water.

Farmland drainage is one of the important measures to improve agricultural production conditions and ensure high and stable crop yields.

Water flows to a low level (Newton's second law), unless the outlet level is lowered by a water pump, and the water naturally flows from the high water level to the low water level. Fochai Pump Industry (mainly producing small axial flow pumps and self-priming pumps for agricultural use) will answer for you.

Have you ever done a ditch bottom slope design? If not, then you're horizontal, right?

Drain slope.

It is based on the experience of predecessors, and considering the actual pipe network layout and excavation strength, generally not less than five thousandths, if it is too small, gravity drainage can not be smooth.

Rainstorm formula. qy= ·q·f calculation.

Where: qy—design rainwater flow (l s);

runoff coefficient; Take.

q—rainstorm intensity (l s·ha);

f—catchment area (ha).

In the formula: p - design return period, take 2 years.

t—rainfall duration (min); Take 5min

then q5=414l (s·ha) (p=2, t=5min) catchment area.

If there is a large topographic map, the catchment area is divided according to the watershed line of the topographic map; If there is no detailed topographic map, a certain range on both sides of the road (generally 150 200m) is considered according to the layout of the road network.

True] [Accurate] [Fast] [Perfect].

If you don't understand, please ask, please [adopt as] to solve the problem, it is not easy to answer the question, thank you for your support!

The annual edition of the GB "Code for Outdoor Water Supply and Drainage Design" has a detailed calculation formula.

This is very simple Hehe First of all, you have to determine how big the pipe you want to use, what material, according to your description, generally use PVC pipe, about the outer diameter of 250 is almost, enough, the slope can be eight thousandths You can also zoom in a little, depending on the actual situation, if necessary, you add a little more detail, I will help you make a small plan, hehe.

It's 1000 meters to descend 8 meters, that's it, you can drain it clean, if your drainage is small, you can put the slope a little smaller, five thousandths, that's it, that's it.

Although this design is small, there are still many basic elements to know, the flow rate is the amount of water you intend to discharge, the height difference from the starting point to the end point, and the height difference between your bath drain and the drain pipe drain.

It is recommended to use a slope, although there are drainage ditches around it, but when the water is large, the drainage is not urgent, and the slope helps to speed up the water flow.

Dig the slope place, the inclination will change, just operate according to the drawing.

The so-called slope refers to the tangent of the angle between the slope and the ground.

The calculation formula is: slope = ditch depth [(upper width - lower width) 2] The ditch depth is missing from the problem you gave and cannot be calculated. Assuming that the ditch is deep in meters, then:

Slope = . Commonly known as the slope of 1:1.

Set the depth of the ditch in meters, then: slope = , that is: 8:9 slope.

Do you understand?

According to the specification, the local slope of the drainage ditch can be 0, and it is strictly forbidden to reverse the slope, but your drainage flow rate should not be too large. For example, if the rainstorm gutter is in the rainstorm period, the 0 slope drainage ditch may be backwatered.

Of course not, how can 0 be anti-water?