| 摘要 |
Before injecting a flowable hardenable mass for anchoring a fastening member in a borehole, a coating solution is sprayed into the borehole for securing any drilling dust remaining on the borehole surface. A device for introducing the hardenable mass into the borehole includes a feed duct for injecting the mass. A container holding a coating solution is provided in the device. Another duct laterally surrounds the feed duct and forms an annular passage and a tube extends from the container to the annular passage for spraying the solution onto the borehole surface.
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