Novel foundation pit backfilling structure

The utility model discloses a novel foundation pit backfilling structure, the device comprises a base pit, the fixed mounting all around of foundation ditch has the outer wall, the outside face leastsignificant end fixed mounting of outer wall has the base, the base top fixed mounting in the outer wall outside has the precipitation well, the least significant end movable mounting of precipitationwell has the suction pump, the top fixed mounting of precipitation well has the ground storage water tank, the suction pump is through first water pipe and ground storage water tank fixed connection,the ground storage water tank passes through second water pipe and foundation ditch fixed connection, the lower part fixed mounting of the least significant end of precipitation well has blind drainage ditch, the peripheral subaerial fixed mounting of foundation ditch has the ground air pump, the top outside fixed mounting of outer wall has compaction mass detector, the right side below ground ofouter wall is stacked and i