How to prevent deformation of ductile iron manhole cover?

How to prevent deformation of ductile iron manhole cover?

Ductile iron manhole covers, as a product to cover roads or deep wells in homes, can be seen in any street and alley. Its use has brought great help to our life. Ductile iron manhole covers are easily deformed after a certain period of application. In this case, we can only replace new ones to avoid accidents.

When backfilling ductile iron manhole cover grooves, it is necessary to select appropriate packing and pressing (tamping) machinery according to the backfilling position and construction conditions. When the trench is narrow, manual or frog ramming machine can be used for tamping and filling. Different packing and different packing thickness should choose different tamping tools to obtain economical compaction effect. The silt, tree roots, turf and rotting plants in the filling guess not only affect the compaction effect, but also dry and shrink in the soil, and rot to form holes. These data cannot be used as fillers to avoid settling. Control the water content of the filler to be greater than 0.02; if the ductile iron manhole cover encounters groundwater or construction after rain, the water needs to be drained first, and then filled and compacted in layers.

Corresponding methods can be adopted according to the degree of settlement damage. This makes our ductile iron manhole covers safer and more convenient to use. Bring security to our life.