One-time forming construction method for medium-length hole cable-stayed groove

The invention relates to the technical field of medium-length hole mining of over medium-thickness ore bodies of underground metal mines, in particular to a medium-length hole cable-stayed groove one-time forming construction method which comprises the following steps that S1, compensation spaces are constructed on the upper portion and the lower portion of a to-be-constructed cutting groove area of an ore body correspondingly, the compensation space constructed on the upper portion is a first compensation space, and the compensation space constructed on the lower portion is a second compensation space; the compensation space of the lower construction is a second compensation space, and a cutting area is formed between the first compensation space and the second compensation space; s2, the whole cutting area is divided into a cutting well area A, a well expanding area B and a groove broaching area C, and a cutting well compensation large hole in the cutting well area is constructed; s3, normal blast holes are