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 […]

Several Questions During Self Drilling Rock Bolt Support

Self drilling rock bolt support has many advantages, such as instant bearing, large pretension force, good support effect, low labor strength and low cost, etc. Nowadays, self drilling rock bolt technology has become an effective way to realize high efficiency and production. While during construction process, there are several questions needs to be noticed: 1. […]

Design Parameter of Self Drilling Rock Bolt

With rapid development of economy, hydraulic engineering is more and more. Most of them exist in remote mountainous area with large drop and complicated geological condition, when encountering landslide, debris flow and other natural hazards, they will probably be destroyed. So, as an efficient anchoring method, self drilling rock bolt is widely used in many […]