Application of chemical grouting in a intake tunnel works

The article introduces a diversion tunnel work which maintains bad geological conditions,and after the procedure of pouring,backfill grouting,consolidation grouting been completed in it,flexible stitch,construction stitch and some grouting parts became leaking.The polyurethane chemical grout slurry was adopted in construction,the CN2000A was also used for sealing,and CN2000B water-proof materials was used for coating,the results are proved to be good.