In high-slope protective engineering of railway, it is easy to occur slip and destruction along shearing surface. To keep stable of slope, there are two ways: one is to cut slopes for reaching stable; the other one is to install retaining structures. While the first way is not economical or practical, so self drilling hollow bolt is a quite convenient and safe method for reinforcement.

Self drilling anchor is a structural system transferring tension to stable stratum or soil layer. It consists of anchor head, free segment and anchorage section, which can effectively control slide, collapse and destruction. In high-slope protective engineering of railway, self drilling anchor’s install position, inclination should be designed correctly to resist slope’s instability and destruction.

Adopting the method of self drilling anchor with sprayed concrete, drilling, grouting and anchoring function can combine together, safe, high-efficient and easy to operate.

Building railway network, tunnel construction is quite convenient for saving cost. And self drilling rock anchor is an efficient way to reinforce structures. It combines drilling, grouting and anchoring together, bonds to soil layer, stabilizes stratum and then reaches to the effect of supporting projects.

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