As FRP threaded rods are used in more and more fields, they will grow stronger and stronger. To make FRP threaded rods more popular, the use of FRP threaded rods also provides a new method for the quality acceptance of roadway support projects and improves Construction Quality. Whether the selected FRP threaded rods are qualified, whether the injection angle is reasonable, whether the amount of anchoring agent is sufficient and suitable, random extraction, recycling inspection, you can know at a glance.

1. What are the main factors for the integrity and stability of FRP threaded rods support?
The hardness of the surrounding rock of the roadway determines the function of support. If the surrounding rock is soft, deformation will occur, which makes the maintenance of the roadway more difficult; if the surrounding rock is very hard, the natural surrounding rock will have a stronger load capacity. , the stability of the roadway is relatively high, and such a roadway is easy to maintain. The hardness of the surrounding rock of the roadway actually determines the load capacity of the surrounding rock, and the hardness of the load capacity is sufficient, so the maintenance effect is better.
2. FRP threaded rods ground stress
The ground stress of FRP threaded rods includes self-weight stress, geological structural stress, and mining concentrated stress. Self-gravity stress refers to the stress caused by the weight of the rock and soil itself, and the strength of this stress is determined by the weight of the rock and the burial depth. If the distance between the roadway and the surface is large, the surrounding rock will be more easily deformed, and the relative stability of the surrounding rock will be reduced, so the burial depth of the roadway has a great influence on the stability of the surrounding rock. The geological structural stress of FRP threaded rods refers to the stress required by the geological formation of a certain structural system. If the structural stress is large, the geological structure will develop faster, so the development of the surrounding rock will be lower, and the stability of the roadway surrounding rock will be worse. . Concentrated mining stress refers to the stress suffered during coal mining. When the distance between the roadway and the coal mining area is very close, the mining stress will be very large. This mining stress is directly related to the thickness of the coal seam roadway and coal mining . The roadway surrounding rock is affected by the pressure of the coal seam where it is located, and is also affected by the stress from the coal mining, and will be squeezed by two forces at the same time, which will affect the stability of the roadway.
3. FRP threaded rods roadway section shape and roadway section size
Since the stress distribution of the section will change with the change of the shape of FRP threaded rods, so in order to improve the stress distribution of surrounding rock, the effect can be achieved by changing the shape of FRP threaded rods, such as FRP threaded rods circular, oval Cross-section, its stress distribution is relatively uniform, compared with trapezoidal and rectangular. Moreover, in addition to being affected by the shape, it will also change due to the width and height of the roadway, so all the above factors must be fully considered.