Before pouring into the concrete floor, it is forbidden to build pipes before building resin composite water meter wells. It is important to select the appropriate backfill materials and tightening methods for the subgrade around the resin composite water meter well. After each layer of the road panel is filled and compacted, 50cm shall be excavated backward from around the resin composite water meter well, and then buried with coarse sand or gravel with a diameter of less than 3cm, and compacted with straight impact spraying, with a degree of contraction of more than 95%。