FRP rock bolt can better play a role in the support of Mining
With the popularization of bolting and shotcrete support technology in coal system, the use of is increasing. Especiallycan better play a role in the support of Mining.Because the steel rock bolt is heavy, and the installation of steel rock bolt is of
great strength, and the operation efficiency is low. According to the characteristics of underground coal mine, the development of high
strength and light weight, coal mining machine can directly cut the non metal rock bolt,t. The high strength glass fiber reinforced plastic
rock bolt is the main research direction.
Fiberglass is a new kind of all thread bolt, which is specially suitable for fully-mechanized coal mining.
Fiberglass anchor bolt is made of high quality pultrusion resin, alkali-free glass fiber yarn and other auxiliary materials. It’s a new kind
of all thread bolt, which consists fiberglass anchor bar, high strength composite plate and nut.The use of FRP rock bolt in underground coal
mine has the following advantages:
(1) the glass fiber reinforced glass fiber reinforced rock bolt is light weight with high strength: the relative weight is only 1.5-2.0, and
the strength can be close to the level of the steel, and the supporting strength of the FRP bolt is close to that of the steel material, and
its weight is only about 1/5 of the same size.
(2) glass fiber reinforced plastic rock bolt is easy to cut, it won't produce sparks, glass steel is not a metal material, easy to cut, and
will not produce sparks, especially suitable for "fully mechanized". It can not only ensure the safety of underground coal mine, but also
solve the mine anchor supporting function, and it can greatly improve the efficiency of coal mining, reduce the cut coal machine cut tooth
damage to reduce the production cost.
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