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METHOD OF CONSOLIDATING AND SEALING COAL AND/OR ROCKY,SOIL AND MASONRY FORMATIONS IN MINING TUNNEL DRIVING AND CONSTRUCTION WORK
METHOD OF CONSOLIDATING AND SEALING COAL AND/OR ROCKY,SOIL AND MASONRY FORMATIONS IN MINING TUNNEL DRIVING AND CONSTRUCTION WORK
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机译:巷道掘进和施工中煤及/或岩石,砖石构造的固结和密封方法
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摘要
The invention relates to a process for consolidating and sealing coal and/or rock, soil and brick formations in mining, tunnelling and construction by reacting polyisocyanates and aqueous alkali silicate solutions in the presence of a catalyst prompting the trimerization of the polyisocyanate. The catalyst is used in an amount of 6.0 to 14.5 mmole per mole of NCO groups in the reaction mixture. When the reaction mixture is introduced into the coal and/or rock, soil and brick formation to be consolidated and is cured, excellent consolidation results are achieved on account of the formation of an "interpermeated network" of inorganic and organic polymer.
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