Tunnel roof supports are mainly used for mine tunnels, secondary support of mine tunnels, and support and support of mountain tunnels. The tunnel roof support is highly praised for its high pressure resistance, long support time and easy installation and deformation. The tunnel roof support seems to be a simple structure. What parts does it consist of? Let ’s take a look at the tunnel roof support .
The tunnel roof support is composed of the following structures: top beams, column legs, connectors, inter-frame tie rods, and backing material. Among them: there are 3 types of column legs, one is a circular arc in the upper part and a straight line in the lower part; the second is all curved and has only one radius of curvature; the third is all curved, but there are two Curvature radius. A base is welded under the leg, and the size of the base depends on the hardness of the base plate. The top beam is arc-shaped, and its number depends on the section size of the roadway, the force of the support, and the transportation conditions. There are 1 or more sections. The connecting piece is a clamping device between the brace section and the intersection, which can play the role of intersection connection. It can also press the two sections of steel joints connected to provide pre-tightening force to make the U-shaped steel have frictional force, thereby ensuring The arched bracket has a certain working resistance and a certain amount of shrinkage.
The use of tunnel roof support can effectively reduce the occurrence of accidents such as roof fall and sheet gangs, which is safe and reliable, and improves the stability of the mine ventilation system. And it better solves the problem of excavation and support.
