Tailing sand filling gelling auxiliary material and preparation method thereof

The invention discloses a tailing sand filling gelling auxiliary material and a preparation method thereof. The tailing sand filling gelling auxiliary material comprises the following main components: 4-50 parts of sulfonated oil, 30-35 parts of a silane coupling agent, 8-10 parts of anionic polyacrylamide, 6-10 parts of an alkaline activator, 3-5 parts of an environment-friendly sulfate activator, 0.3-0.8 part of a dispersant, 1-2 parts of an anionic surfactant and 100 parts of water. According to the tailing sand filling gelling auxiliary material disclosed by the invention, the tailing sand is gelling by using small doses of solid wastes such as the auxiliary sludge, the water granulated slag, the steel slag, the desulfurized fly ash and the fly ash, so that the strength of filling slurry can reach an expected target; when auxiliary cement gel tailing sand is used for filling, the cement-sand ratio can be effectively reduced, the production cost is saved, and the filling body doped with the filling gel aux