In the field of mine support, we all know that bolting and shotcreting support is an advanced way of coal mine roadway support. Among them, FRP bolt, a new functional material made by composite technology of glass fiber and synthetic resin, has the characteristics of high strength, corrosion resistance and low cost, which is more suitable for underground use in coal mines.

The support effect of FRP bolt is good. Relevant data show that the steel bolt used for underground support in coal mine generally begins to weaken the support effect in 8 months after installation, and will basically lose the support effect in about two years. FRP bolt has good corrosion resistance, is not exposed to ultraviolet rays when used underground, has slow aging speed and long service life, and can completely maintain the support effect during the service time in coal mine.

At present, the research and development of FRP anchor rod has achieved initial results, breaking through the three major problems of overall tensile strength, large-scale production of molding technology and equipment, and reduction of comprehensive production cost. FRP anchor rod products have been accepted by more and more users. The performance of FRP bolt is due to the same kind of steel bolt, but its price is lower than that of the same kind of steel bolt, so it has been widely used in domestic coal system.

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