25U Mining Support U Channel Steel
ABOUT US
Mine support U-shaped steel arch support is mainly used for mine tunnel support and has the characteristics of high-pressure steel structure.Main use: Mainly used for the support of mine tunnels, auxiliary purposes of mine tunnels, and the support of mountain tunnels.
-
With Ce Certificate
-
Safety And Environmental Protection
| Quantity: | |
|---|---|
Product Description
Mine support U-shaped steel arch support is mainly used for mine tunnel support and has the characteristics of high-pressure steel structure.
Main use: Mainly used for the support of mine tunnels, auxiliary purposes of mine tunnels, and the support of mountain tunnels.
Main features: pressure resistance, long support time, easy installation, not easy to deform and so on.
1) Specifications: U25, U29, U36;
2) Assembly: top beam, two landing legs, four clamps, two bottom plates
3) Material: 20MnK Q275
4) Grade: SS400 Q235 A36
5) Size: 50mm*37mm*4.5mm-320mm*88mm*8mm
The best stress state of the U-shaped steel bracket is that the back wall is filled and compacted to make it press evenly.
When the pressure value of the surrounding rock applied to the U-shaped steel bracket reaches a certain value, the bracket will be compressed, so that the surrounding rock acts on the U-shaped steel bracket.
The pressure on the steel bracket is reduced, so as to avoid the damage of the bracket due to the pressure of the surrounding rock being greater than the bearing capacity of the u-shaped steel bracket.
Experience summary of u-shaped steel support
1. The U-shaped U-shaped container design of U-shaped steel support is actually to achieve a better stress state. After the pipe wall is filled and compacted, it will be uniformly compressed. For the surrounding rock pressure value at a certain time on the U-shaped container, the support can be compressed to relieve the pressure from the outside and reduce the risk of mining under operation. Compared with other rigid supports, U-shaped steel supports have the characteristics of scalability and reliability, adapt to the load and deformation of soft surrounding rock, have high section utilization rate, convenient support back, small maintenance, high bracket recycling rate, reduce the use of pit materials, and have obvious environmental benefits.
2. The main characteristics of u-shaped steel support for mining: large pressure, long time of support point, easy assembly and difficult replacement.
U-shaped steel support is a kind of passive support for coal mine support.
It has high tensile strength and compressive strength, and has good toughness performance, high support force and high support strength.
It can be used many times and is widely used. In mine roadway, especially in deep complex roadway and soft coal seam roadway.
Compared with other rigid supports, U-shaped steel supports have shrinkability, stable and reliable bearing capacity, adapt to the load and deformation of soft surrounding rock, high section utilization rate, convenient support support, small maintenance, high support recovery and reuse rate, and reduce pits.
The use of wood has obvious environmental benefits.
Product Parameters
Size | Material | Theoretical weight (kg/m) | cross-sectional area (cm2) | Height | Thickness | Width | Leg thickness |
25U
| Q275B/ 20Mnk | 24.95 | 31.79 | +1.0 120 -1.5 | +0.5 15 -1.2 | +1.0 130 -3.0 | +0.8 6.3 -0.5 |
29U
| Q275B/ 20Mnk | 29.00 | 37.00 | +1.0 124 -1.5 | +0.5 16 -1.2 | +1.0 150.5 -3.0 | +0.8 7.2 -0.5 |
36U
| 20Mnk | 35.87 | 45.70 | +1.0 138 -1.5 | +0.5 17 -1.2 | +1.0 171 -3.0 | +0.8 7.8 -0.5 |
40U | 20Mnk | 40.05 | 51.02 | +1.0 149 -1.5 | +0.5 20.2 -1.2 | +1.0 171 -3.0 | +0.8 8.5 -0.5 |
