Sectional grouting device

The utility model relates to the technical field of tunnel construction, in particular to a segmented grouting device which comprises grouting pipes and a grout stopping pipe and further comprises a flange plate, the flange plate is provided with a plurality of grouting pipes which are arranged in an equal difference mode, the shortest grouting pipe is a floral pipe section with a pipe body provided with holes, and the floral pipe section is a hollow pipe section. The other grouting pipes comprise perforated pipe sections with pipe bodies opened and straight pipe sections with pipe bodies not opened, the total length of the straight pipe section of the longer grouting pipe and the total length of the shorter grouting pipe in the two grouting pipes with the similar lengths are equal, and an inlet of the perforated pipe section of the longer grouting pipe is flush with the tail end of the perforated pipe section of the shorter grouting pipe. The connection position of the floral pipe section and the straight pi