Constant rainfall or a sudden surge of storm wash can create a hazardous situation for pipelines. If a pipeline is in danger of becoming exposed, its chances for failure increase. Fortunately, pipeline companies undertake many prevention and safety measures to ensure the integrity of their pipeline systems. A particularly dangerous situation can occur if an underground pipeline is exposed due to erosion. That’s where Submar comes in.
A 15-foot deep erosion rill had formed in an unnamed wash after repeated storm water flows. The rain sheetflow had exposed one of four natural gas pipelines in the area. If left uncovered and unprotected, the pipeline risked further exposure and potential damage due to continued pipeline erosion.
The Submar Solution
In order to restore cover to the exposed pipeline and stabilize the soils, Submar constructed a mechanically stabilized earth (MSE) wall with a drop structure.
- The project area was excavated and graded as necessary; the crew began building the MSE wall using grading stakes, welded wire baskets, soil reinforcements, Miramesh, gabion stones, and Miragrid.
- Within the sequence of building the MSE wall, a drop structure with a vortex diffuser was constructed with a 24-inch diameter drainage pipe within the left-descending bank to convey sheet flow from the high bank to the unnamed wash.
- A 12-foot by 12-foot concrete pad was installed around the pipe inlet.
- A 3-foot deep subgrade rock grade control was installed at the bottom of the culvert outlet to prevent storm flow from eroding the bed of the channel.
Let Submar help with all of your erosion needs. Our experts offer specialized solutions for your erosion problems.