Coal Mine Support W Type Steel Band

Features of W steel strip:

1. W steel strip is a serialized product, and different models can be selected according to different geological conditions and different requirements;

2. Compared with other types of steel strips, it is not easy to tear and has a high degree of rigidity;

3. High utilization rate of section of W steel strip, saving material and high cost performance;

4. The modulus of bending section is increased by 37 times, and the rigidity is increased by about 70 times.

Because the section modulus of the W steel strip is very different from the upward and downward (the modulus of the downward section is about 2.75 times the modulus of the upward section), so when installing, the bolt drill is used to jack up, the section modulus of the steel belt. It is small and easy to stick to the surrounding rock of the roof, but when the roof is pressed, the modulus of the bending section of the steel strip downward is very large, which makes the Rock Bolt loose the surrounding rock to form a whole.

In mine support and tunnel support, the W steel strip has become more and more popular. Through the cooperation with the rock bolt, the W steel strip can connect scattered anchors to form a bearing structure, so that the system improves the great support effect. W steel strips are generally made of Q235, Q215, and Q195 materials, of which Q235 is a commonly used specification. The W steel strip itself has huge advantages, the stiffness has been improved by more than seventy times, and the bending resistance of the cross section is strong, which has been improved by nearly 40 times.