Analysis of Grouting Technical Measures for Water Diversion Tunnel Project
The rock mass of consolidation grouting section of water diversion tunnel project is hard and brittle,and the rock type is mainly Class Ⅲ.The grouting adopts full-section consolidation grouting and plum-shaped arrangement.In order to provide construction parameters,the grouting test was carried out.The results showed that the water permeability decreased obviously with the increase of grouting sequence,which accorded with the general grouting law and had good grouting effect.The amount of ash injected per unit in the first sequence hole was 100-1 000 kg/m.With the implementation of grouting sequence,the amount of ash injected per unit in the second sequence hole all decreased to less than 100 kg/m,and the proportion of ash injected per unit ranging from 10 to 50 kg/m was 83.3%.
water diversion tunnelgroutingpermeability rateash injection amount
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