Dredge device of annular embedded corrugated pipe duct and dredge method thereof

The invention discloses a dredge device of an annular embedded corrugated pipe duct and a dredge method thereof, and relates to the field of tunnel construction. An upwards sunk mounting hole (22) is arranged in the middle of the bottom surface of a hemispherical grinding wheel, wherein a mandrel (7) is connected with the grinding wheel, a sleeve (5) is arranged outside the outer edge surface in the middle of the mandrel, a guide disc (3) is arranged on the upper end of the sleeve, the outer edge surface of the mandrel and the guide disc (3) are in socket joint through a sealing element B (15) and a sealing element A (4) so as to form a cooling water passage, the lower end of the mandrel is connected with a soft shaft, and the lower end of the soft shaft is externally connected with a power source to form the dredge device of the annular embedded corrugated pipe duct. According to the invention, the concrete structure cannot be destroyed and replaced in a construction process, meanwhile, the dredge device and the dredge method have the characteristics of simple operation, quick movement, quick and accurate drilling speed, convenience for maintenance, and the like, through application of the dredge device and the dredge method provided by the invention, the construction efficiency is greatly improved, and the cost is saved.