Composite foundation of deep and thick garbage miscellaneous fill and construction process and equipment thereof

The invention discloses a composite foundation of deep and thick garbage miscellaneous fill and a construction process and equipment thereof. The construction process comprises the following steps of: positioning and paying off a measured construction area; determining a plurality of pile sites according to each axis obtained by positioning and paying off; hammering and forming holes at a first part of pile sites in the plurality of pile sites to obtain a plurality of column hammer punched holes; punching sleeves to a preset depth by using column hammers in the plurality of column hammer punched holes; filling the sleeves to form column hammer punching and expanding piles; drilling and forming holes at a second part of pile sites in the plurality of pile sites to obtain a plurality of drilled holes; pouring concrete into the plurality of drilled holes to form CFG piles; and finally, laying mattress layers on the column hammer punching and expanding piles and the CFG piles. The column hammer punching and expan