The dangers of soil erosion are very real and it can lead to the clogging of drains and roadways, flooding and even cause damage to other properties nearby. As a result, when a construction project is underway, it is necessary to take certain steps to prevent or at least reduce soil erosion. There are many simple and easy solutions as well as complex ones, depending on the particular situation. So, we will now look at a few of them.
Water, as well as wind, is the primary cause of erosion. As you know, water runs downhill, but it will actually push upwards if the volume of water in an area moves the water out of its own banks. As a result, before any construction starts to take place, you should have a plan in place to move or divert the water. If possible, you should take a look at the construction site beforehand on a rainy day so you can observe the flow of water.
Another solution is to disturb as little area as possible when doing the excavation. You should only excavate one section at a time, even though this may seem to be inefficient and more costly in the long run. By only excavating one section at a time, it will reduce the amount of sediment on the construction site, thus reducing overall erosion.
Plastic sheeting can also be used to cover the soil from the rain. However, this should only be done over small areas that are prone to erosion. If this is done to a larger area, it can actually cause further problems as the water runs off.
In the event that you need to remove trees from the construction site, then it is best to bring a mobile grinder to chip the material. The ground-up material can then be used to help reduce erosion by creating erosion control swales and berms. Additionally, this material can be composted and used later for slope site stabilization and even re-vegetation. By doing this it will not only reduce erosion but also provide a cheap and easy way to get rid of the fallen trees.
Installing articulated concrete blocks are another way in which erosion can be stopped. These blocks are revetment systems which can be made in varying sizes, shapes and thicknesses. The blocks are then formed in a grid, interconnected and installed along embankments, waterways and also man-made drains.
Lastly, straw wattles can be used which are basically logs of straw. They work by slowing down water and catching sediment and they are more effective than silt fencing. These need to be staked in a trench and backfilled on the upper side.
In closing, these are just a few ways that you can deal with soil erosion at construction sites. It is best to investigate as many different methods as possible in order to find the best and most cost effective method to use for your particular situation. So, be sure to keep researching to learn about more erosion control methods.