The Role of Coal Mine Support Tray Anchor Rod Trays

Anchor rod trays play a crucial role in soft rock conditions. The expansion and disintegration of rocks are characteristic of soft rock formations, which often consist of soft clay layers. After the excavation of tunnels, these clay rocks can experience varying degrees of immersion or weathering, leading to increased volume and pressure. This results in a rapidly developing loosening zone and plastic deformation of the surrounding rock, significantly affecting the stability of the tunnel.
The properties of the surrounding rock have a decisive impact on the deformation and damage experienced by the tunnel. Soft rock or expansive rock can significantly influence the nature and severity of tunnel deformation. Consequently, during the excavation of soft rock tunnels, poor stability arises from the effects of loose zones and plastic deformation. The surrounding rock may become broken and loose, resulting in cracks and expansion that lead to rock fragmentation and deformation. This, in turn, causes further deformation and damage to the support structures.
Additionally, the surrounding rock may contain expansive minerals that swell upon exposure to water, further contributing to roadway deformation. The primary objective of the anchor rod tray support system is to address the fragmentation and expansion that occur during the loosening and development of the surrounding rock, effectively preventing deformation and enhancing tunnel stability.