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Self-drilling anchor baris a bolt which combined drilling with grouting .The features of Self-drilling anchor bar are reliable, efficient and convenient , adapted to different construction site conditions,the requirements of engineering geological conditions that has to adapt to the more perfect with the matching system that can ensure the anchoring effect in a variety of geological environments, self-drilling anchor bar emphasis on flexible support system construction close to the rock surface to be bettered play their own strength of surrounding rock and to maintain suppression rock stress balance.The construction method of self-drilling anchor bar are: the self-drilling anchor bar crusher is mainly used in complicated conditions, weak surrounding rock, highland stress large deformation, were support, rescue, landslides and other self-governance Drilling and Grouting in all cases, for a wide range of higher functions.After it is installed in the hollow bolt head on the body of carbide drill bits, drill pipe with the bolt body instead of drilling shank connected to the connecting rod bolt body and drilling machine, drilling machine with a bolt hole to the depth to the design, installation pulp stopper, plate, after nut, grouting, when the slope support or hydropower construction, can also be used instead of the large-diameter bolt hole drilling drill pipe, drilling grouting,and play more powerful role than anchor,it is stronger, quicker and more convenient and lower construction costs.
