Technical measures for improving pulling force of self drilling rock bolt

1. Choose reasonable drilling technology 1) Drilling hole is strictly prohibited water, which should use high-pressure wind piercing, slag discharge, cooling operation; 2) For determine the diameter of drill bit, it’s should adopt drilling machine when drilling with self drilling rock bolt, check the verticality of the drill pipe, the anchor hole deflection, with footage […]

Safe soil nails from Sinorock ensure the quality of construction

The development of vertical and sub-vertical elements to standard soil nail system has increased the use and application of soil nail earth retention and slope stabilization. Advances in material such as fibre glass pipe which improves mechanical interaction with injected grout is used in the tunnel face. The use of double corrosion protection and durable […]