High-solid-content bleeding efficient percolation device for goaf after grouting and filling

The goaf high-solid-content bleeding efficient percolation device comprises a main water filtering pipe, auxiliary water filtering pipes and a water filtering thin film, one end of each auxiliary water filtering pipe is closed, the other end of each auxiliary water filtering pipe is communicated with the main water filtering pipe, the auxiliary water filtering pipes are evenly distributed on the side wall of the main water filtering pipe in a plurality of rows in an inserted mode, and the water filtering thin film is arranged on the side wall of the main water filtering pipe. The auxiliary water filtering pipes in each row are uniformly distributed along the semi-circumferential outer wall of the main water filtering pipe and are inserted in the radial direction of the main water filtering pipe, water filtering holes are formed in the outer walls of the main water filtering pipe and the auxiliary water filtering pipes, and the water filtering films tightly wrap the outer walls of the main water filtering pipe