Support pile control method for underlying underground structure deformation caused by earth surface excavation

The invention discloses a retaining pile control method for deformation of an underlying underground structure caused by earth surface excavation, which belongs to the technical field of earth surface excavation support and comprises the following steps of: before earth surface excavation above an existing underground structure, predicting and determining a bottom upheaval damage area of an earth surface excavation range according to the width and depth of a planned excavation range; according to the bottom upheaval damage area of the earth surface excavation range, a retaining pile is adopted for reinforcement design, and retaining pile design parameters are determined and specifically comprise the retaining pile driving mode, the retaining pile length and retaining pile section parameters; according to design parameters of the retaining piles, before the earth surface above the existing underground structure is excavated, the retaining piles are driven along the earth surface at uniform intervals, earth sur