Foundation pit fat groove backfilling method based on concrete waste in electric power engineering

A method for backfilling a foundation pit fertile groove based on concrete waste in electric power engineering comprises the steps that support replacement and support disassembly of a deep foundation pit are executed, and after supports in the support replacement and support disassembly period of the deep foundation pit are disassembled, solid waste disassembly aggregate is recycled and used for backfilling the foundation pit fertile groove; the method for backfilling the fertilizer groove of the foundation pit by using the solid waste disassembled aggregate comprises the following steps: carrying out crushing, cleaning and grading treatment on waste concrete generated after a support is disassembled during support replacement and support disassembly of the deep foundation pit to form recycled aggregate, and preparing the recycled concrete for backfilling the fertilizer groove by using the recycled aggregate, according to the method, the defect that on-site concrete waste is not directly used as a foundation