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In case of extra-thick Carboniferous coal seam mining, the hard rock strata of 50-100 m existing above the coal seam roof in upper layer, simple roof caving controlling technology can hardly achieve the engineering needs. To solve the strong abutment pressure in mining induced by multiple hard rocks overlying strata in coal mine, the structure and lithology of the overbeding hard rock strata were explored. Based on the engineering background of fully mechanized caving coal mine in Datong coalfield of China, a technical scheme of strata control of multiple hard roof fracturing was formulated. A ground and underground combined hydraulic fracturing technology was carried out. Results show that the deformational behavior of lower strata is closely related to the movements of the upper hard rock strata. The development and expansion of the cracks within upper hard rock strata is the dominant factor to the abutment pressure of the working face according to microseismic monitoring data. The working resistance of the hydraulic supports, deformation of the roadway and the pressure of the advanced support in tailgate were used to verify the effectiveness of the proposed controlling technology. The conclusions obtained in this study provide a novel method for the joint control of the multilayer of rigid roof and provides a means of precise control of hard rock strata. [ABSTRACT FROM AUTHOR]