Shield interval dewatering construction method

The invention discloses a shield interval dewatering construction method which comprises the following steps: measuring a well position according to a well position plane arrangement schematic diagram; burying a mouth protecting pipe; installing a drilling machine; drilling to form a hole; a casing pipe is put down, a wall breaking assembly used for breaking mud cakes on the wall of the well hole is arranged on the casing pipe, and the mud cakes on the wall of the well hole are broken through the wall breaking assembly; the well pipe sequentially comprises a well wall pipe, a water filtering pipe and a sand setting pipe from top to bottom, the well wall pipe, the water filtering pipe and the sand setting pipe are connected into a whole before the well pipe is put down, and the mouth protecting pipe is pulled out after the well pipe is put down; a filter material is filled between the well casing and the casing, the casing is pulled out when the filter material is filled to the position 1 m below the well mout