The invention relates to the technical field of tunnel drainage, and specifically discloses a directional accelerated
crystallization device for a tunnel drainage
system and a method for using the device. The device comprises a
crystallization pool component, a felt layer and a
medicine box component, wherein the
crystallization pool component comprises a crystallization
pool, and a pool cover is arranged on the top of the crystallization pool; the crystallization pool comprises a front wall, a rear wall, an outer wall and an inner wall; the
medicine box component comprises a
medicine storage box, and a horizontal mesh medicine box is arranged at the bottom of the medicine storage box, and the mesh medicine box is a double-layer hollow mesh structure, and the bottom of the medicine storage box is connected to the mesh medicine box, and reactive drugs are placed in the mesh medicine box; the invention takes into account the influence of temperature, flow rate, chemical drugs, crystallization pool shape and surface morphology on the crystallization of tunnel water, and can realize the idea of directional crystallization of the tunnel drainage
system, and at the same time has the advantages of simple structure, easy medicine replenishment, cleaning, repair and maintenance, and can be applied to tunnels that have been put into operation, and can also be applied to tunnels in the
design stage.