Abstract: Onsite engineering tests show that the anchor fixed into the floor at a base angle can effectively control the deformation of roadway floor.The shear experiment of different types of anchor rods was carried out.The result shows that a seamless rock has a higher shearing resistance than a tube seam rod and different rod- filling materials may have a great impact on the rod shear resistance.The steel-reinforced rod has the highest shear resistance, the grouted rod has the secondary, and the hollow rod the least.The steel reinforcement of rod can not only improve the rod body strength but also render the rod the capacity of enduring a secondary load by the duplex load peak characteristics occurring under the shearing process and a larger deformation range.This study result can be instructive to the study of mechanical characteristic of anchor|floor heave control|and parameter design optimization.

Key words: Floor anchor, Shear, Yield