Operation method for repairing floating cover film with water

The invention discloses an operation method for repairing a floating cover film with water. The operation method comprises the following steps: constructing an operation support platform for repairing a film surface broken hole by adopting a large-area buoyancy pad; enabling an operator to stand on the HDPE floating cover films on the two sides of the broken hole to weld HDPE film strips; slowly lifting the film strip, and lifting the HDPE floating cover film at the broken hole to be in a suspended state; temporarily sealing the film surface broken hole by adopting a strong adhesive tape; and carrying out extrusion welding repair on the film surface broken hole by adopting an HDPE repair block to form a permanent and firm HDPE repair block, so as to complete repair of the film surface broken hole of the HDPE floating cover film with water. The problem that in the operation process of a sewage pool, due to foreign matter entering or the action of external force or the like, holes occur in the film surface of t