Roof control method for hard composite roof

The invention relates to the technical field of coal mine support, in particular to a hard composite roof control method which comprises the following steps: S1, after roof cutting is completed, applying a high-pre-stressed anchor cable in an adhesive tape gate roadway, actively supporting a roof in an advanced stage, controlling the separation amount of the roof in the advanced stage, and maintaining the integrity of the roof; and S2, in the pushing and mining roadway forming process, a unit support is arranged in the rubber belt crossheading roadway. The method has the beneficial effects that the combined supporting scheme of the high-pre-stressed anchor cables and the unit supports is used under the condition of the hard composite roof, that is, the high-pre-stressed anchor cables are applied to the advanced working face to control roof separation and maintain roof integrity, and the high-pre-stressed anchor cables are matched with the strong supporting unit supports in the roadway in the roadway forming s