A concrete anti-arch composite structure is designed to control floor heave, thus reinforcing the floor and strengthening the two bottom sections of a roadway, forming a semi-closed structure and increasing the bearing capacity. Based on mechanical theory and assumptions, a floor heave coupling control model using a bolt and concrete anti-arch combined structure is established. The mechanical model is assessed for the mechanics of floor heave control, and stability equations for the bolt and concrete anti-arch combined structure are established. Based on the actual circumstances of the 1#roadway in the S6 mining area of the Changcun mine, the proposed support scheme of floor heave control proves that the bolt and concrete anti-arch composite structure is stable, and the design parameter is reasonable according to stability discrimination and numerical simulations. The theoretical calculated deformation is 106.7 mm, which is far less than 500 mm using the original support scheme. The floor heave is reduced by nearly 73% using the combined bolt and concrete anti- arch structure to control a roadway floor; floor heave control of the 1 # roadway in the S6 mining area is thus implemented.
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