High anti-penetration concrete mixing material for tunnel shield tube plate and its preparation method

The present invention relates to a concrete admixture shield segment and its preparation method. High permeability shield segment concrete admixture, characterized in that it is prepared by mill mixing the components of the feed adjusting slag, fly ash, silica fume, and functions as a percentage by mass of the raw materials: slag 25% -40 %, 40% -50% fly ash, silica fume 15% -25%, the function adjusting component 3-6%; wherein the functional component is adjusted enhancers, waterproofing agents, and toughening agents, reinforcing agents, waterproofing agents toughener component percentage share quality adjusting function: 36-40%, reinforcing agent, waterproofing agent 48-51%, 10-15% toughener. Shield sheet of the invention the high permeability of concrete admixtures in the concrete shield segment, can improve the impermeability and strength of the release sheet to meet the needs of shield production.