Underground roadways are important passageways for transportation, ventilation, and personnel in coal mines. Support is an effective way to ensure mine safety. Mine cable bolts and new technologies for cable bolts further optimize support design, compensating for the shortcomings of traditional support technologies, such as low support strength, high labor intensity, and poor stability.

Advantages of mine cable bolt support technology:

1. Significantly improves roadway support effectiveness

(1) Mine cable bolts bond with the rock mass to improve the integrity of the rock mass.

(2) Mine cable bolts play a suspension role on unstable rock layers. Due to preloading, a compression rock beam is formed, preventing the separation of layered rock masses and increasing the frictional force between rock layers. In addition to the shear resistance of the mine cable bolts themselves, it can prevent relative sliding between rock layers and improve the bearing capacity of the rock layers.

(3) Mine cable bolts change the stress state of the rock mass on the roadway surface from a biaxial stress state to a triaxial stress state, improving the bearing capacity of the rock mass.

2. Changes "passive protection" to "active protection"

After the surrounding rock deforms and is damaged, support and loading are carried out on the shed-type support. Mine cable bolt support uses anchoring agents, rods, support plates, and various components or spray layers to give the surrounding rock a certain support strength, forming a support system together with the surrounding rock, and the support force increases with the deformation of the surrounding rock.

3. Reduces road maintenance

Mine cable bolt support can promptly consolidate the surrounding rock, reduce surrounding rock deformation, and prevent early delamination of the roof and slopes.

4. Simplifies the support and advance support at the working face end

It creates good conditions for the rapid advancement of the coal mining working face, improving production and efficiency.

5. Eliminates safety hazards

There are gaps between the shed and the roof coal seam, which can easily cause coal spontaneous combustion; when installing, removing, and moving up and down along the working face trench during the installation and removal of large-section cutting eyes, large-scale collapses or casualties are prone to occur.

6. Reduces support costs

Mine cable bolt support can save a large amount of steel, wood, and other materials, reduce support costs, reduce worker labor intensity, and reduce auxiliary transportation volume.

Application and product characteristics of mine cable bolt support: It can significantly improve the support effect of roadways. Mine cable bolts bond with the rock mass to improve the integrity of the rock mass.

Collapses in tunnel construction may be caused by geological conditions or construction methods. In the event of a collapse, it should be dealt with promptly to avoid unnecessary casualties and losses. Mine cable bolts Support is one of the effective methods for dealing with collapses.

Introduce the characteristics of mine cable bolts.

1. Hollow design achieves grouting function.

2. Full grouting, pressure grouting can be achieved.

3. The rod is well neutral, and the mortar can wrap Mine cable bolts the entire length, avoiding rust and achieving long-term support.