Safety support anchor rod in coal mine well

Abstract

The invention discloses a safety support anchor rod in coal mine well. A anchor sleeve comprises a first anchor rod sleeve section integrally arranged, a second anchor rod sleeve section and a third anchor rod sleeve section. A plurality of axial direction through grooves are formed in the first anchor rod sleeve section in axial direction of the first anchor rod sleeve section, and a plurality ofradial direction circumferential grooves are formed in the second anchor rod sleeve section in the radial direction of the second anchor rod sleeve section. The anchor rod comprises an anchor rod body integrally arranged, an anchor rod internal solid section and an anchor rod internal clamping section, the anchor rod internal solid section is used to be connected with the anchor rod internal clamping section on the inner end of the anchor rod body, and an extending strip groove is formed in the anchor rod internal solid section in the axial direction of the anchor rod internal solid section.Grooves of the first anchor rod sleeve section and the second anchor rod sleeve section can be filled with solidified slurry well, the stability of anchoring of the anchor rod sleeve is improved, andthe anchoring force in radial direction and lengthways direction of the anchor rod sleeve is ensured; at the same time, the anchor rod internal solid section and the anchor rod internal clamping section are arranged on the inner end of the anchor rod, and the stability of the anchor rod is further ensured to prevent the anchor rod from loosing after anchoring. The Safety support anchor rod in coalmine well is reliable in structure, and the safety of coal mine support can be efficiently enhanced.

Description

technical field [0001] The invention relates to a coal mine underground safety support bolt, which belongs to the technical field of coal mine support. Background technique [0002] At present, in coal mining, it is generally necessary to use bolts for support. The bolt is the most basic part of roadway support in contemporary coal mines. It reinforces the surrounding rock of the roadway so that the surrounding rock can support itself. Now anchor rods are not only used in mines, but also in engineering technology for main body reinforcement of slopes, tunnels and dams. As a tensile member that goes deep into the ground, the bolt is connected to the engineering structure at one end, and the other end goes deep into the ground. The whole bolt is divided into a free section and an anchor section. area, whose function is to apply prestress to the anchor. Current anchors include the following: [0003] (1) Wooden anchor rod. There are two types of wood anchors used in our co...

AI Technical Summary

Problems solved by technology

[0010] The above various anchors have their own advantages and disadvantages in coal mine support. However, although the above various anchors are relatively simple in anchoring, the anchoring force is small, and the anchoring reliability is difficult to guarantee, especially for soft rocks and other occasions. , it is easy to loosen after anchoring, and it is difficult to achieve a good anchoring effect

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