Precipitation construction method employing pipe embedding in deep foundation pits

The invention relates to a precipitation construction method employing pipe embedding in deep foundation pits and belongs to the field of building construction technology. The construction method comprises the steps of: a, when earth is dug to a depth 1 meter above a designed bottom elevation of an engineering foundation pit, accurately measuring a position of an elevator pit or a catch pit in the foundation pit, and digging a pit reaching 100 millimeters below the pit bottom elevation in the middle of the foundation pit with an excavator; b, pressing a portion of a steel pipe into the middle of the elevator pit or the catch pit with the excavator, taking out the steel pipe for forming a borehole, and installing a PVC filter pipe (1) in the borehole vertically; c, fixing one end of a PPR embedded pipe (3) and the upper end of the PVC filter pipe (1) in a pluggable manner and drawing the other end of the PPR embedded pipe (3) to the outside of the foundation; d, installing a self-priming pump (4) on the other