Introduce the maintenance knowledge of the rock bolt: mining anchors 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 beneficial to the safe construction of roadway, especially suitable for high gas concentration area; high strength, corrosion resistance, light and easy to operate, weighing only 1/4 of the same size steel anchor. It can be easily used in narrow spaces such as tunnels and cola mines, making construction easier, thus reducing the labor intensity of workers. The price is lower than that of metal anchors, which can reduce the cost of bolt support by 10%.

The mine rock bolt is a kind of anchor used for coal mine underground support. The length of the bolt is strong and the length can be intercepted according to demand. The anchoring performance is good, simple and reliable, high strength, construction and other advantages make it mainly used. The support in the underground can also be used for the support of other projects.

The rock bolt is the most basic component of the roadway support in the contemporary coal mine. He binds the surrounding rock of the roadway together, so that the surrouding rock itself supports itself. Now the rock bolts are not only used in mines, but also in engineering technology. Active reinforcement of slopes, tunnels and dams.

As a tensile member deep into the stratum, the rock bolt is connected to the engineering structure at one end and deep into the stratum at the other end. The whole rock bolt is divided into a free seciton and an anchoring section. In the free section, the pulling force at the anchor head is transmitted to the anchor. Zone, the function of which 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.