The difference between side ditch and drainage ditch

1, and the side ditch refers to the drainage ditch at the edge of subgrade; Drainage ditch refers to the water collected in low-lying places near subgrade, such as side ditch, falling well, rapids, intercepting ditch, etc. , and lead to the ditch outside the subgrade.

2. Different positions: the side ditch is located in the excavation section; Drains are set on both sides of the fill section.

3. Different functions: the side ditch is a collecting ditch, which mainly collects surface water and introduces the drainage ditch; Drainage ditch collects the water from the side ditch and discharges it into nearby ditches or rivers.

4. Different forms: the side ditches have various forms, which can be divided into trapezoidal, dish-shaped, triangular and rectangular side ditches; Drains are usually u-shaped.