Underground roof support the best stress state is close-grained filling after the uniform compression, as applied to underground roof support pressure value reaches a certain value, the bracket can produce compression, the effect of surrounding rock in underground roof support, to avoid the surrounding rock pressure is greater than the bearing capacity of u-shape set and make the stents.
Main characteristics of underground roof support: bear pressure, support time, easy to install and not easy to deform. Main application: it is mainly used for secondary support of mine roadway, mine roadway and support of tunnel through mountain. The use of u-shaped steel support can effectively reduce the occurrence of roof caving and strip side accidents, which is safe and reliable and improves the stability of the mine ventilation system.
The underground roof support can be used to solve the problem of tunneling support. As the main section steel for making tunnel flexible metal support, the underground roof support is widely used at home and abroad.
