Novel isolating and retaining structure with purification function and rapid construction method

The invention provides a novel isolating and retaining structure with a purification function and a rapid construction method thereof. Two rows of fixing holes are drilled in the positions with good stability in a roadway, a filter layer and a supporting layer are sequentially connected with the periphery of the roadway through fixing structures, long-strip-shaped bags with reserved long pipes andmade of non-woven geotechnical cloth are arranged in the middles of the filter layer and the supporting layer in advance, one long-strip-shaped bags is horizontally arranged at each of the top and bottom of the roadway, and the other long-strip-shaped bags are vertically hung on the fixing structure or a metal net of the filter layer; purification materials are sequentially poured into the long-strip-shaped bags from openings of the long pipes through a grouting machine, a filled space is coordinately compacted by adjusting the long-strip-shaped bag at the bottom and the long-strip-shaped bagat the top, and it is gua