Large-span efficient mining method for broken ore body based on high-strength composite isolation false roof

The broken ore body large-span efficient mining method based on the high-strength composite isolation false roof comprises the steps that a stope is segmented according to the ore body burial depth, and each middle segment is divided into an upper segment, a middle segment and a lower segment; then a high-strength composite isolation false roof is constructed at the bottom of the upper subsection, the high-strength composite isolation false roof comprises a first sublayer and a second sublayer, anchoring parts and reinforcing meshes are arranged in the first sublayer and the second sublayer, the anchoring ends of the anchoring parts extend into the rock mass, and the other traction ends of the anchoring parts are connected with the reinforcing meshes; and finally, the middle section and the lower section are subjected to stoping filling through a large-span medium-length hole open stoping subsequent filling method in the route direction perpendicular to the high-strength composite isolation false roof. Theref