Mining rock bolt have an irreplaceable advantage over traditional metal anchors. The rod is easy to cut in performance and protects the cutter head; explosion-proof and anti-static, no sparks when cutting, it is very bebeficial to the safe construction of roadway, especifically suitable for high gas concerntration area; high strength, corrosion resistance, light and easy to operate, weighing only 1/4 of the same size steel anchor. Easy to use in tight spaces such as tunnels and coal mines, make construction easier, thus reducing the labor intensity of workers, the price is lower than metal anchors, so that the cost of bolt support can be reduced by 10%.

Mine rock bolt is a kind of anchor used for coal mine underground support, this kind of bolt is the same length and the length can be intercepted as needed, the advantages of good anchoring performance, simplicity and reliability, high strength and construction make it mainly used for underground support, and can also be used for support of other projects.

The rock bolt is the most basic component of the roadway support in contemporary coal mines, it binds the surrounding rocks of the roadway and makes the surrounding rock itself support itself. Now the rock bolts are not only used in mines, but also in engineering technology, active reinforcement of slopes, tunnels and dams.

Rock bolt as a tensile member deep into the formation, one end is connected to the engineering structure and the other end is deep into the stratum, the whole anchor is divided into a free section and an anchoring section, in the free section, the pulling force at the bolt head is transmitted to the anchoring area, and its function is to apply prestress to the anchor; the anchoring section refers to the area where the cement paste bonds the prestressing tendon to the soil layer, its function is to increase the bonding friction between the anchor and the soil layer, increase the bearing pressure of the anchor, and transmit the tensile force of the free section to the depths of the soil.

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