Drilling, bolting and grouting all-in-one machine structure and construction method

The invention belongs to the technical field of drilling, bolting and grouting construction devices, and particularly relates to a drilling, bolting and grouting all-in-one machine structure and a construction method.The drilling, bolting and grouting all-in-one machine structure comprises a spiral drilling and anchoring rod body, a disc, an outer shell, a supporting assembly, a top cone and a telescopic piece; the twist drill anchor rod body is arranged above the top cone, the lower end of the twist drill anchor rod body penetrates through the top cone and is located in the top cone, the twist drill anchor rod body is of an inner hollow structure, and mesh holes are formed in the cone wall of the top cone; the outer shell is arranged outside the top cone and the twist drill anchor rod body in a sleeving mode, and the upper end of the twist drill anchor rod body is located outside the outer shell. The disc is arranged outside the twist drill anchor rod body in a sleeving mode and located above the outer shell