The tunnel roof support can effectively reduce the occurrence of roof caving and strip side accidents, and improve the stability of mine ventilation system. The research on the popularization and application of the tunnel roof support improves the safety production conditions of the mine, reduces the production cost, conforms to the national policy of replacing wood with steel, and has better environmental protection and social and economic benefits.
1. The tunnel roof bracket has the characteristics of high pressure bearing, long supporting time, easy installation and not easy deformation, etc.
2. The application of vertical wall semicircular arch support to lift the roof of tunnel in the intersection point of mining roadway has achieved remarkable results.
3. Compared with other rigid supports, the tunnel roof supports have the flexible, stable and reliable bearing capacity, which can adapt to the load and deformation of soft surrounding rocks. It has high utilization rate of section, convenient support and return, high reuse rate of supports, and obvious environmental benefits.
4. The connection of tunnel roof support is safe and reliable, which can improve the service life of roadway, reduce the maintenance rate of roadway, reduce the occurrence of safety accidents, and ensure the safe production of coal mine.
Tunnel roof support is mainly a kind of passive support for coal mine support, with high tensile strength and compressive strength, good toughness performance, high supporting force and large support strength. It can be used for many times and is widely used in mine roadway.
