Sinorock rock bolt system

Sinorock drill rock bolt is a kind of self-drilling rock bolt system that is fully threaded on the surface. rock bolt can be simultaneously drilled and grouted into loose or collapsing soils and brittle rock, but the casing is not necessary. The feature of the rock bolt is that it has left-thread for standard rotary percussive drilling.

rock bolt system is manufactured from high grade steel tubing. The standard rope thread can be formed after the cold rolled process. The rolling process refines the grain structure of the steel. The structure increases the yield strength and produces a robust drill steel that is suitable for a range of drilling and grouting applications.

rock bolt system is consist of a various kind of drill bit, adapter sleeves, couplers, nuts and bearing plates. With the injection adapters and drill tooling, the rock bolt can be used with many types of drilling equipment. 

Features of rock bolt system

1. Casing is not necessary. rock bolt can be drilled into loose or collapsing soils without the need for a casing to support the borehole.

2. Simultaneous drill and grout installation. Grout is injected at all points of the borehole as drilling is advanced, permeating the local strata for increased bond performance and producing bulbing between the strata and the rock bolt in the softer sections of the soil.

3. Rotary percussive drilling
This drilling technique is highly efficient, ensures fast progress of drilling as well as good directional stability of the drill string and helps to consolidate the grout within the borehole.