Mining anchor cable is a widely used support material in mining engineering, which enhances the stability of tunnels by applying active pressure to the surrounding rock. The following is a detailed introduction to mining anchor cables:
1, Definition and composition
Mining anchor cables are composed of multiple components, mainly including the spear head (anchor section or anchor root), anchor body, and external anchor head (external anchor section). Specifically, mining anchor cables consist of steel strands, anchoring agents, trays, anchors, and other anchoring accessories. Among them, the spear head is the foundation of anchor cables anchored in the rock mass to provide pre-stress; The anchor body is the main part for transmitting prestress; The external anchor head is the part where the anchor cable provides tensioning tonnage and locking, and it has a variety of types, including anchor plug type, threaded type, reinforced concrete cylindrical anchor pier type, pier head anchor type, and steel frame type.
2, Type and classification
According to different materials and uses, mining anchor cables can be divided into various types, such as steel anchor cables, fiberglass anchor cables, prestressed steel strand anchor cables, etc. In addition, mining anchor cables can also be classified according to specific models and specifications, such as SKP15-1/1860, SKP18-1/1860, SKP22-1/1770, etc. These models usually include information such as the nominal diameter, number of strands, and tensile strength of the anchor cables.
3, Application field
Mining anchor cables have been widely used in various fields such as coal mine roadway support, dam reinforcement, and landslide control in China. Especially in the construction of coal industry tunnels, anchor support has been widely applied and developed due to its unparalleled technical superiority, support strength, and high safety and reliability. This technology is not only applicable to complex geological conditions such as soft rock tunnels, goaf tunnels, and deep tunnels, but also maximizes the improvement and expansion of the stress conditions and application scope of the new anchor mesh support technology.
4, Advantages and advantages
Mining anchor cables have multiple significant advantages and advantages. Firstly, anchor cable support has a large anchoring force and depth, which can effectively control the subsidence of the roof and deformation of the roadway. Secondly, anchor support materials have a small volume and light weight, reducing auxiliary transportation and material consumption, and lowering the labor intensity of workers. In addition, all anchor support operations are carried out using mechanized and rapid construction, which improves construction efficiency and quality. Finally, the anchor supported roadway simplifies the end support process of the mining face during the mining process, improves the maintenance status of the end area, and ensures safe production.
5, Production process and quality control
The production process of mining anchor cables can be roughly divided into several stages, including raw material procurement, material pretreatment, steel strand weaving, production molding, and durability testing. In the production process, it is necessary to strictly control the quality and processing technology of raw materials to ensure that the anchor cables have sufficient strength and durability. At the same time, strict durability testing is also required to verify whether the performance indicators of the anchor cables meet the design requirements.
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