grouted rock bolt

Presently, rock reinforcement technique (rock-bolting) is used in almost all types of underground structures due to its performance, cost-effectiveness, and safety. The structures reinforced by grouted rock bolts are, in general, very reliable and long lasting. In general, rock bolts reinforce rock masses through restraining the deformation within rock masses and reduces the yield region around the excavation boundary.

Small displacements are normally sufficient to mobilize axial bolt tension by shear stress transmission from the rock mass to the bolt surface. Grouted bolts have been successfully applied in a wide range of rock mass qualities especially in poor rock mass and found to be often more economical and more effective than mechanical rock bolts. Owing to their grouting effect on improvement of rock mass, grouted rock-bolts have been widely used in tunneling and mining applications under difficult ground condition.

Sinorock produces a range of standard and high capacity self drilling rock bolt suited for various uses including: micropiles, tension rods, nailing, slope stabilization, etc.

Sinorock self drilling rock bolt offers an excellent choice for micro piles in difficult ground conditions where open-hole drilling isn’t possible. The continuously threaded bar profile lends itself perfectly for restricted headroom applications because the bar can be cut and coupled at any length.

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