Self drilling anchor bolts--An ideal solution for weak soil
Time:2021-08-25From:sinorock View:
In the field of geotechnical engineering, there are complex geological conditions such as weak rock and soil layers, fault fracture zones, and easily collapse geology, which brings great difficulties to engineering construction. Self-drilling anchor bolt integrates the functions of drilling, grouting, and anchoring together. The construction process of simultaneously drilling and grouting is the best solution for loose and weak formations..png)
Self-drilling anchor bolts are the best solution for weak formations. They are widely used in slope engineering, ground and foundation engineering, tunnel and underground engineering. They can be used for pre-construction support and can effectively enhance the stability of soil and rock mass.

Hollow anchor bar can work as both drill rod and anchor rod, which reduces the two construction steps of retracting drill rod and inserting anchor rod. It simplifies the construction process and effectively improves construction efficiency.
Self-drilling anchor bolt can be drilled without casing when drilling in soft formations, thus it can greatly improve construction efficiency, shorten the construction period and reduce engineering costs.
Hollow anchor bar has continuous thread along the full length, which can be cut at the construction site according to the actual situation and can be extended with a coupler, which is especially suitable for limited access.
Simultaneously drilling and grouting, the cement grout can be fully filled and penetrated into the surrounding rock and soil to form a uniform filter cake with higher bonding strength.
Rotary percussion drilling method not only drills efficiently but also ensures good directional stability of the drill rod.

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