High-water fast-setting gob-side entry retaining material, and preparation method and using method thereof
The invention relates to the technical field of materials, and concretely discloses a high-water fast-setting gob-side entry retaining material, and a preparation method and a using method thereof. The high-water fast-setting gob-side entry retaining material comprises a material A and a material B;...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention relates to the technical field of materials, and concretely discloses a high-water fast-setting gob-side entry retaining material, and a preparation method and a using method thereof. The high-water fast-setting gob-side entry retaining material comprises a material A and a material B; the material A comprises, by mass, 90-96% of an aluminate cement clinker, 0.2-0.5% of sodium citrate, 0.3-0.5% of cellulose ether, 3.5-4% of sodium sulphoaluminate and 0-5% of II-level fly ash; the material B includes, by mass, 70-85% of modified gypsum, 3-4% of reinforcing agent, and the balance of lime; and a mass ratio of the material A to the material B is 1:(0.8-1.2). The high-water fast-setting gob-side entry retaining material of the invention has the advantages of small solid material,high compressive strength, simple preparation method, no pipeline blocking and adjustable setting time during use, nontoxic and harmless raw material, and no pollution to the soil or groundwater.
本发明涉及材料技术领域,具体公开一种高水快凝沿空留巷材料及 |
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