rock bolts
This method consists of making holes ranging from 40-64 mm in diameter to a depth of not more than 12 m. The distance between holes is (1.5m-2.5m) or according to the opinion of the relevant (geological engineer), and then rock bolts are planted with lengths and lengths arranged by the competent geologist, the injections are injected after processing with a (shrink-resistant concrete filler (grout)
This is done by means of a compact mechanical injection system, using special machines that have the ability to mix and pump the material in the hole, so that the rock bolts are one unit with the rock and to ensure the quality of the work a stress test is performed for a selected group of rock bolts.