There are many kinds of industrial products, as well as support, which are subdivided into anchors, and there are various types of anchors. Today, we are going to talk about FRP anchor, which is a very popular support anchor at present. It is composed of glass fiber resin rod and tray nut, and is widely used in coal mine roadway, mine support, underground tunnel engineering support and other scenes.

At present, according to the characteristics of underground coal mine operation, it is a project that relevant departments at home and abroad attach great importance to the development of non-metallic bolt with high strength and light weight and direct cutting by coal mining mechanical energy. Among them, high strength glass fiber reinforced plastic anchor is the main research direction.

FRP bolt can solve the limitation of metal bolt. It adopts rough surface or full thread rod formed by pultrusion, winding and compounding of glass fiber and reinforced resin, and is matched with bolt composed of tray, nut and other components. From the actual use effect, the support of FRP bolt has the following advantages:

1. the input cost is low

FRP bolt is light in weight and convenient in transportation, which can reduce the investment of roadway support materials in transportation and reduce the support cost in the process of coal mining. In addition, the FRP bolt can penetrate into the surrounding rock mass without occupying the roadway section, which also reduces the cost of roadway excavation. In addition, the stability of FRP bolt support is better, and the maintenance amount of roadway is less, which can reduce the maintenance cost of the project to a certain extent.

2. The use efficiency is convenient

In essence, bolt support is to use the hard structure inside the surrounding rock to reinforce the external rock mass, and make full use of the supporting force of the surrounding rock itself to form a relatively stable supporting structure, which can effectively improve the stability of the surrounding rock of the roadway and ensure the safety of construction. At present, FRP bolt has been widely used in construction industry, chemical industry, automobile and railway transportation industry, boat and water transportation industry, electrical appliance industry and communication engineering.

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