Compared with other rigid brackets, it has retractability and stable and reliable bearing capacity, adapts to the load and deformation of soft surrounding rock, high section utilization rate, convenient steel arch support, small maintenance, high bracket recovery and reuse rate, and reduces the use of pit wood. The tunnel roof support environmental protection benefit is very obvious.
1. The 40U-shaped steel arch support bears great pressure, supports a long time, and is easy to install and not easy to deform.
2. Compared with other rigid supports, the 40U-shaped support arch has a shrinkable and stable and reliable bearing capacity, and it can adapt to the load and deformation of the soft surrounding rock.
3. The 40U-shaped tunnel roof support has a high cross-section utilization rate, which is convenient to support and has a small amount of maintenance.
4. The 40U tunnel roof support has a high recycling rate, reduces the use of pit wood, and has obvious environmental benefits. The project is safe and reliable. It effectively reduces the occurrence of roof fall and slabs, and improves the stability of the mine ventilation system.
The popularization and application research of this project has improved the safe production conditions of mines and reduced production costs. It conforms to the national policy of substituting steel for wood and has good environmental and social and economic benefits.
