How mining anchors are laid out to be stronger

How to layout the mining anchor rod to be stronger? Mining anchor rod is a tool applied to mine roadway and underground engineering perimeter rock support, which can ensure the stability of mine roadway and underground engineering perimeter rock. Mining anchor rod use range, can realize the end anchor, lengthening anchor; easy to operate, low price and other advantages, widely used in coal mines, railroads, hydropower and other engineering all kinds of roadway support.

Mining anchor is the basic component of the contemporary coal mine roadway support, he will roadway rock reinforcement together, so that the rock itself support itself. Nowadays, anchors are not only used in mines, but also used in engineering technology to reinforce the main body of slopes, tunnels and dams. Anchor as a deep stratum of the tensile member, it is connected with the engineering structure at one end, the other end of the deep stratum, the whole anchor is divided into the free section and anchorage section, the free section refers to the anchor head of the tensile force to the anchor solid area, and its function is to apply prestressing force to the anchor.

So in the actual construction of how to arrange the mining anchor is more reasonable?

1. The horizontal spacing of the anchor should not be less than 1.5 meters; multi-layer anchor, the vertical spacing should not be less than 2.0 meters; when the spacing of the anchor is less than 1.5 meters, according to the group anchor effect of the pull-out bearing capacity of the anchor should be discounted or adjacent anchor should be taken at a different angle; 

2. The thickness of the overlying soil layer of the anchored section of the anchor should not be less than 4.0 meters.

3. Anchor inclination should be taken 15 ° ~ 25 °, and should not be greater than 45 °, should not be less than 10 °; anchor anchoring section of the anchor should be set in the soil bonding strength of high soil layer;

4. When the anchor through the stratum above the existence of natural foundations of buildings or underground structures, it is appropriate to avoid easy to collapse holes, deformation of the stratum.