Experimental Research on In-Situ Grouting through Holes in Complex Rock Stratum in Tunnel
详细信息   
摘要
Aiming at the search of impervious technique in an engineering tunnel,in-situ grouting by boreholes was adopted for grouting experimental research.The researches indicate that most rock strata in this area leak severely.By assuming the technology of two-step grouting,pounding ratios in most rock strata with severe leakage achieved up to 80% and in some area to 100%.But some boreholes need further investigations on grouting measures for improving pounding ratios effectively.
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