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During the construction of underground works, it is very common to encounter soft rock, fractured zone and large deformation due to high ground stress. In the case of serious collapsing, extra-long anchor is needed instead of ordinary one. Self-drilling anchor embodies drilling, grouting and anchoring as a whole. Widely used as an efficient anchoring means, in tunnel pre-support, slope, coast, mine, water conservancy projects, building foundation, roadbed reinforcement and geological diseases treatment such as landslip, crack, sink age. It’s irreplaceable in narrow construction environment.
The traditional motor anchor is replaced by Hollow Grouting Anchor, which completely solves the problems of existed in the former one and realizes full and pressured grouting. So this anchor is widely used in radial and slope reinforcement as well as pit support.

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