Mine anchor rock bolt is used as a tensile member deep into the stratum. One end is connected to the engineering structure and the other end is deep into the stratum. The entire mine anchor rock bolt is divided into a free section and an anchor section. In the free section, the head of the mine anchor is used. The tensile force is transmitted to the anchor area. Its function is to apply pre-stress to the anchor bolt for mining. The anchor section refers to the area where the cement slurry binds the pre-stressed tendons to the soil layer. Its function is to bond the anchor to the soil layer. The increased friction of the knot increases the pressure-bearing effect of the anchor body and transmits the tensile force of the free section to the depth of the soil.

According to the anchoring method, it is divided into: extended anchoring, end anchoring and full length anchoring.
1. Anchors for wood mining. There are two types of anchor rock bolts used in China's wood mines, namely ordinary wood mine anchors and compressed wood mine anchors.

2. Anchors for steel or steel wire rope mortar. The cement sand paddle is used as the binder of the anchor rock bolt and the surrounding rock for the mine.

3. Resin mine anchor. Using resin as a binder for mining anchors has a higher cost.
4. Pipe seam type anchor bolt. It is a full-length friction anchoring mine anchor rock bolt. This type of mining anchor has the characteristics of simple installation, reliable anchoring, large initial anchoring force, and long-term anchoring force increasing with the movement of surrounding rocks.

5. Anchor for inverted wedge metal mine. This mining anchor was once one of the most widely used forms of mining anchors. Because it is simple to process, easy to install, and has a certain anchoring force, this mine anchor is still in use to a certain extent.

6. Anchors for fast hardening cement mines. It is made of ordinary portland cement or slag portland cement with additives, which has the characteristics of rapid setting, early strength, water reduction and expansion.

7. Shuangkuai cement anchor bolt. It is made from finished early strength cement and Shuangkuai Cement in a certain proportion. It has the characteristics of fast hardening, fast setting and early strength.

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