River drainage channeling supporting structure and mounting method

The invention discloses a river drainage channeling supporting structure and an installation method, and belongs to the technical field of hydraulic engineering, the river drainage channeling supporting structure comprises a soil layer, a plurality of prefabricated installation frames are arranged in the soil layer, and a sealing assembly is arranged on one side of each prefabricated installation frame. According to the device, a plurality of prefabricated mounting frames are supported and limited through a third sliding block, a third sliding groove, a plurality of fixed supporting frames and a plurality of slope supporting assemblies, so that the supporting stability of the prefabricated mounting frames in the mounting process is effectively ensured while the portability of the prefabricated mounting frames in the mounting process is ensured; in the mounting process of the prefabricated mounting frame, the gravity of the prefabricated mounting frame enables a first sliding block, a connecting block, a slidi