Block paved Driveway

[C_B-H]

I have recently moved into a new house which has a block paved driveway. The driveway is on a slope. After the recent downpour sand has been washed down the slope under the bricks creating a pile at the bottom of the driveway lifting the bricks. How can I rectify this and prevent it happening again?

Any advice will be greatly received

[dewaltdisney]

Use a resin sand fill. It brushes in and sets hard. See sika Fastfill

DWD