Non-destructive digging is a technique that can be used to dig deep holes in soil without damaging the ground. While it is an effective technique for tunnelling through soft ground, it can also be used to excavate foundations, sinkholes and trench lines. Contractors use suction to remove soil and debris from the dig site. Using this technique reduces the chance that pipes or other subterranean structures will be damaged during the dig. Below is a step-by-step guide to non-destructive digging. Read on to discover more!
1. Before you start
Before you start, ensure that all pipes and cables that run through the dig site are recorded and flagged. If possible, this should be done before ground preparation begins. This is because there might be pipe lagging in the ground which you might not see or be able to flag if other ground preparation is taking place at the same time.
2. Prepare the dig site
Level out and compact any soft ground at the dig site before you begin. Doing so will help remove excess water that could cause problems with the suction hose.
3. Start Suctioning
Put the suction hose in operation and start digging, gradually lifting the hose to move it further down the trench. Doing so allows for a gradual removal of soil from the trench floor. It is important that you have at least half of your excavation completed before you turn off the suction hose. If not, more soil could fill in around the dig site, which will make it more difficult for you to remove any water from the hole once it has been dug.
4. Remove excess water
Once the dig is complete, use a rod to remove excess water from the hole. This can be done by inserting the rod into the hole and moving it around to break up any obstructions that may be present in the bottom of your hole. You can then pump this water out with your suction hose. At this stage, it is also advisable to check for any damage to pipes or other subterranean structures that might have been caused during digging.
Once the work is complete, you can backfill the hole and compact the soil so it is level.
If you would like to find out more, you should make contact with a company that offers non-destructive digging services. A contractor will be happy to provide you with further help and assistance.