MGSL20 Mining Anchor Bolt
ABOUT US
The total length of the full thread of the bolt is equal to the full length of the bolt of the same specification, and the bearing capacity of the bolt is increased by 40%. The use range of bolts is expanded, and end anchors, extended anchors and full anchors can be realized; the operation is simple and the price is low.
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Underground Explosion-proof
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No Pollution And No Emission
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Product Description
The total length of the full thread of the bolt is equal to the full length of the bolt of the same specification, and the bearing capacity of the bolt is increased by 40%. The use range of bolts is expanded, and end anchors, extended anchors and full anchors can be realized; the operation is simple and the price is low.
The whole length of the rod body has continuous thread compression, and the strength of the whole length is equal; the prestressed washer and the spherical nut are installed on the tightening end. Fiber reinforced plastic FRP mine bolt is made of glass fiber yarn, resin and curing agent through extrusion, stretching and high temperature curing. The shape of the FRP bolt is full thread, and the thread can be left-handed or right-handed.
The bolt has the properties of high tensile strength, easy cutting, no damage to teeth, no sparks, safe mining efficiency, light weight, corrosion resistance, flame retardant, antistatic and other properties. It can be permanently supported and can replace the metal bolt reinforced composite material.
There must be several factors to constitute the anchor rod:
① A bar whose tensile strength is higher than that of rock and soil mass.
② One end of the rod can form friction (or bond) resistance in close contact with the rock and soil mass.
③ The rod body located at the other end of the rock and soil mass can form radial resistance to the rock and soil mass.
Action principle: as a tension member penetrating into the stratum, the anchor rod is connected with the engineering structure at one end and is penetrated into the stratum at the other end. The whole anchor rod is divided into free section and anchor section. The free section refers to the area where the tension at the anchor head is transmitted to the anchor solid, and its function is to apply prestress to the anchor rod; Anchorage section refers to the area where the cement paste will bond the prestressed reinforcement with the soil layer. Its function is to increase the bond friction between the anchor solid and the soil layer, increase the bearing capacity of the anchor solid, and transfer the tension of the free section to the soil depth.
As an integral engineering structure, the track is laid on the roadbed, which plays a guiding role in the operation of the train, and directly bears the huge pressure of the rolling stock and its load.
Under the power of the train's operation, its various components must have sufficient strength and stability to ensure that the train runs safely, smoothly and uninterruptedly according to the specified maximum speed.
Anchor Bolts: A type of fastener consisting of a head and a screw (a cylinder with an external thread), which needs to be matched with a nut to fasten and connect two parts with through holes.
Because Anchor Bolts is also a kind of railway accessories, railway accessories are an integral part of the railway line, the track referred to here includes steel rails, sleepers, connecting parts, ballast beds, anti-climbing equipment, rail braces and turnouts.
A bolt is a type of fastener consisting of a head and a screw.
It is used to fasten and connect two parts with through holes. It is an anchoring component that anchors the connected parts to the hardened concrete substrate.
Anchor rod is a member system structure of rock and soil reinforcement.
Through the longitudinal tension of the bolt body, the disadvantage that the tensile capacity of rock and soil mass is far lower than the compressive capacity can be overcome.
On the surface, it limits the separation of rock and soil from the original.
Macroscopically, it increases the cohesiveness of rock and soil mass.
From the mechanical point of view, it mainly improves the cohesion C and internal friction angle of surrounding rock mass φ。
In fact, the anchor bolt is located in the rock soil body and forms a new complex with the rock soil body. The bolt in this complex is the key to solve the low tensile capacity of surrounding rock mass. Thus, the bearing capacity of rock and soil mass itself is greatly enhanced.
Bolt is the most basic component of roadway support in contemporary underground mining mines. It binds the surrounding rock of the roadway to support itself.
Anchor bolts are not only used in mines, but also used in engineering technology to actively reinforce slopes, tunnels, dams, etc.
Product Parameters
Bolt type | MGSL18 | MGSL20 | MGSL22 | MGSL24 | MGSL27 | ||
Appearance | Uniform texture, no bubbles, cracks | ||||||
Nominal diameter(mm) | 18 | 20 | 22 | 24 | 27 | ||
Stretch strength(MPa) | 500 | 500 | 500 | 500 | 500 | ||
Shear strength（MPa) | 100 | 100 | 100 | 100 | 100 | ||
Torque（Nm） | 45 | 55 | 70 | 90 | 120 | ||
Antistatic property（Ω) | ≤3×107 | ||||||
Flame retardant performance | Flaming | 6 root sum(s) | ≤30 | ||||
The biggest single value(s) | ≤15 | ||||||
Flameless combustion | 6 root sum(s) | ≤120 | |||||
The biggest single value(s) | ≤60 | ||||||
The anchoring force(KN) | 60 | 70 | 80 | 90 | 100 | ||
Pallet capacity(KN) | 60 | 70 | 80 | 90 | 100 | ||
Nut capacity(KN) | 60 | 70 | 80 | 90 | 100 | ||
