Water-rich stratum pipe-following shed grouting device

A water-rich stratum pipe-following pipe shed grouting device comprises a steel pipe, a conical sealing part is arranged at the end of the steel pipe, grouting holes are formed in the steel pipe in a plum blossom shape, a sealing plate is detachably arranged at an opening of the steel pipe, a slurry return pipe and a grouting pipe are arranged on the sealing plate in a penetrating mode, and the grouting pipe is connected with the sealing plate. And valves are arranged on the grout return pipe and the grouting pipe. Compared with the prior art, an original welding structure is transformed into a threaded connection structure, construction and assembly are facilitated, meanwhile, the sealing plate abuts against the opening of the steel pipe through fastening of the threaded structure to form a sealed structure, the problem that a water-rich welding seam cannot be sealed is solved, and the construction process of normal pressurized grouting is guaranteed; the grout return pipe is arranged on the steel pipe, afte