| CPC E02D 3/12 (2013.01) | 10 Claims |
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1. A green sealing material for karst flowing water, comprising a component A and a component B, with a volume ratio of the component A to the component B being in a range of 4:1 to 5:1; wherein
the component A comprises in parts by weight: 40 parts to 50 parts of a sulphoaluminate cement, 10 parts to 15 parts of a light-burned magnesium oxide, 1 part to 4 parts of boric acid, and 40 parts to 50 parts of water; and
the component B comprises in parts by weight: 0.2 parts to 0.4 parts of hydroxypropyl methylcellulose, 0.1 parts to 0.5 parts of polyacrylamide, 15 parts to 30 parts of potassium dihydrogen phosphate, 0.2 parts to 0.4 parts of triethanolamine, 0.5 parts to 1 part of lithium carbonate, and 80 parts to 100 parts of water; and
the hydroxypropyl methylcellulose has a molecular weight of 200,000;
the polyacrylamide has a molecular weight of 15 million;
the green sealing material for karst flowing water is prepared by a method, comprising:
mixing the sulphoaluminate cement, the light-burned magnesium oxide, the boric acid, and the water to obtain the component A;
mixing the hydroxypropyl methylcellulose, the polyacrylamide, the potassium dihydrogen phosphate, the triethanolamine, the lithium carbonate, and the water to obtain the component B; and
mixing the component A and the component B according to the volume ratio of 4:1 to 5:1 to obtain the green sealing material for karst flowing water.
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