Rock Bolts

Product Description:

Our resin anchor products, known as Rock Bolts, are manufactured with High Strength Rebar and designed specifically for Mining Rock Anchor to provide superior performance and reliability. These anchors excel in a wide range of geological conditions, ensuring the safety and stability of mine support.High Strength Rebar has excellent tensile strength and durability to withstand high stresses and harsh environments, effectively preventing rock movement and collapse.

Unique resin bonding technology is one of the core strengths of these Rock Bolts. The resin is able to cure in a short period of time, creating a strong bond that holds the anchor firmly in the rock and significantly improves anchoring effectiveness. This efficient bonding not only enhances the overall stability of the structure, but also dramatically shortens construction time and reduces maintenance costs.

In addition, our Rock Bolts are designed to be simple and easy to install, making them suitable for a wide range of mining environments. Whether it's an underground mine or an open pit, these anchors provide a reliable support solution. Choosing our resin anchors means choosing a safe, efficient and long-lasting mine support system.

Product Parameters

Introduction:

Right-hand anchor, also known as equal-strength threaded steel anchor, is a kind of tool for determining the anchoring force, which has the features of small size, light weight, easy to carry, simple operation and safety, etc. It is widely used in many kinds of trenching operations, such as coal, national defense, tunneling and transportation. Right-hand anchor is a very practical geo-engineering support material, which has good tensile strength and corrosion resistance. When it is used, attention should be paid to the maintenance and care in terms of safety, stability and durability to ensure its long-term and effective function.

Anchor development:

At present, the design method of mining anchor support still stays in the stage of empirical design, and the newly developed on-site monitoring method helps to make further scientific judgment, and it is also developing towards the scientific theoretical calculation. Theoretical calculation methods have some problems, and are still generally used only as a design reference basis, but there has been great progress in the last decade or so. The following engineering analogies to empirical means, to test as a means of on-site monitoring method and to calculate as a means of “theoretical analysis method” for a brief introduction.

The engineering analogy method is a widely used method, which directly proposes the design parameters of the anchor spray support based on the experience of similar projects that have been constructed. Usually, the engineering analogy method is based on the anchor spray support type and parameter table in the anchor spray support specification.

Site monitoring design method is a kind of information design construction method according to the principle of Neo method, which is generally divided into two stages: pre-design stage and final design stage. The final design is based on the site monitoring data, after analyzing or calculating the proposed design.

Field monitoring and measurement usually include section convergence measurement, surrounding rock deformation measurement, anchor stress measurement and other items, for section project also need to carry out spray layer surface contact stress and spray layer stress measurement.

Theoretical analysis method is divided into two categories: one is the analytical method, and the other is the numerical calculation method. The following mining anchor manufacturers to anchor suspension theory calculation as an example, to illustrate the essence of the theoretical analysis method.

When the strength calculation of anchor rods supporting individual dangerous rocks is carried out, the connection between the unstable rock mass block and the stable rock mass block needs to be ensured for the locally arranged anchor rods. Usually, the top arch anchors are commonly used in the “suspension theory” calculation, and the anchors on the side arch and side wall should ensure that the dangerous rocks do not slip, and the effect of anchor prestress and the shear strength of the sliding surface and are generally taken into account in the calculation. In general, only the effect of gravity is considered, and the following formula is usually used to determine the spacing of anchors and the depth of anchors into the stabilized rock.

Main technical performance index:

     Yield strength: ≥335Mpa

     Tensile strength ≥490 Mpa

     Elongation rate: ≥15%

     Anchoring force: Φ16>75kN,

                                Φ18>85kN,

                                Φ22>125kN

Installation conditions.

l, Determine the anchor hole position according to the design requirements, use eye drill, anchor drilling machine or coal electric drill to drill the eye, the depth is 80-100mm shorter than the length of the anchor. 

2、Extend into the bottom of the eye with pressure air pipe, and blow the rock dust in the hole through compressed air. 

3、Diameter of drilling hole should be 6-12mm larger than the diameter of anchor rod. 

4、Feed the medicine roll into the bottom of the eye with the anchor, start the mixing device for mixing, and strictly control the mixing time according to the requirements of resin anchor fixing agent. 

5、After reaching the curing time, put on the tray and tighten the nut.