Floor heave prevention method for soft rock floor

The invention discloses a floor heave prevention and treatment method for a soft rock bottom plate, which comprises the following steps of: digging an empty slot in a water spraying section of the soft rock bottom plate, and performing guniting treatment on the wall of the empty slot; grouting anchor rods are installed on a bottom plate of the empty groove at intervals, a steel pipe is welded to the tail of each anchor rod, reinforcing meshes are laid on the steel pipes at intervals, and the reinforcing meshes are welded to the steel pipes; concrete is poured into the empty groove and solidified to form a concrete body, a set width is reserved between the two sides of the empty groove and the concrete body to form a first yielding space, and a baffle is poured above the first yielding space to connect the concrete body with the side wall of the empty groove; a drainage grating is laid on the concrete body, the drainage grating is flush with the roadway bottom plate, and a second yielding space exists between