A flexible pavement/bitumen road alongside an unlined water canal is damaged. the road is caving in as the soil underneath it at the embankment end start flowing towards the slope of the channel and flood level of water in the channel has also risen due to heavy rains. Now the soil underneath at the near end of embankment got loose and start flowing in the channel. a crack has developed along the edges of the road. What is this phenomenon called?
Hi Mohd, I am not sure the actual term to call this damage. But, it looks like a flood damage on road pavement & embankment. When there is loosely compacted soil in subgrade and are unstabilised base & sub base in road pavement, this flood damage occur. It could be riverbank slip. Usually, rock armouring is done on riverbanks to protect the embankment. The base & sub-base should be stabilised (cement-stabilised).
Looking at the images, there are a fair few bricks along the edge. Suggests that there was some attempt to built a retaining wall along the edge of the road. Probably founded on poorly compacted fill. The rain has caused this to slump or scour away causing the loss of support to the road. This then becomes a slip failure due to loss of support.
- Badges
- Science topic
- Similar topics
- Correction