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Abstract
Sleeve valve pipe grouting plugging is the most commonly and effective method to control water leakage of subway station. The success of plugging grouting depends largely on performance indicators of grouting materials such as fluidity, setting time and slurry stone strength. In this paper, a series of experiments were carried out to study the regulation of initial setting time, final setting time, viscosity, bleeding rate, compressive strength of cement-water glass slurry under different mix ratios. Based on the analysis of the results, combined with hydrogeologic condition of Furong East Road Station of Xi 'an Metro, the optimal slurry mix ratio is 0.6 water-cement ratio and 1% water glass content. The field grouting test and numerical simulation show that the cement-water glass slurry grouting with this ratio has good grouting and waterproofing effect. The research results have great guiding significance for the water leakage treatment in subway stations.
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