Tunnel rope saw tunneling method

The invention provides a tunnel wire saw tunneling method, relates to the technical field of tunnel excavation, and solves the problems that an existing tunnel wire saw tunneling method cannot meet the varied lithology characteristics of mountain rock strata and is weak in adaptability to a construction site. A plurality of first holes which are arranged in sequence and parallel to the longitudinal axis of the tunnel are drilled in the tunnel section along a tunnel design section side line, and all the first holes are sequentially connected in the circumferential direction of the tunnel to form a polygonal tunnel section contour line; the edge number of the tunnel section contour line is not less than 6. A rope saw machine is adopted, a rope saw chain is made to cut along the tunnel section contour line through the first hole, and a tunnel contour rock core is formed; a second hole is drilled in the tunnel contour rock core, and the tunnel contour rock core is divided into a plurality of small rock cores thro