Technical parameters of self-propelled anchor rod Application of anchor rod

Description :

　　Self propelled anchor rod composition

　　Alloy drill bit: Made of alloy through precision technology, it has strong hardness and toughness, and its penetration power can enable anchor rods to drill into various types of surrounding rocks

　　Anchor rod body: an important component in the assembly, playing a major role in drilling and anchoring.

　　Connection sleeve: It plays a connecting role when the anchor rod needs to be lengthened.

　　Pad: capable of withstanding greater surrounding rock stress.

　　Nut: It can concentrate the stress of the surrounding rock onto the cushion plate.

　　Construction technology of self-propelled anchor rod

　　1. Connect the alloy drill bit to one end of the anchor rod, and connect the other end of the self inserting anchor rod to the drill sleeve and drill tail, and then connect it to the trolley or handheld drilling rig. The self drilling anchor rod starts drilling at the designed depth, and cooling water must be added during drilling. If the anchor rod needs to be lengthened, the self inserting anchor rod can be connected with a connecting sleeve and then drilled

　　2. Remove the drilling rig, insert the grout stopper into the rod body, and insert it into the hole to prepare for grouting. In special circumstances where the grouting pressure is too high or the surrounding rock is too fragmented, anchoring agents can be used to seal the hole. 3. Connect the quick grouting joint to the end of the anchor rod, and connect the other end of the grouting joint to the grouting machine.

　　4. Start the grouting machine and turn off the machine when the grouting is full and the pressure reaches the design value. The grouting pressure is determined based on the design parameters and the performance of the grouting machine, with a reference value of cement sand ratio of 1:0~1:1 and a reference value of water cement ratio of 0.45~0.5:1

　　5. Install the gasket and nut, and tighten the nut

　　Parameters of self-propelled anchor rod

　　Model ZJS25 ZJS27 ZJS28 ZJS32 ZJS38 ZJS51

　　Outer diameter (mm) ￠ 25 ￠ 27 ￠ 28 ￠ 32 ￠ 38 ￠ 51

　　Tensile strength (MPa) ≥ 650 ≥ 650 ≥ 650 ≥ 650 ≥ 650 ≥ 650 ≥ 650 ≥ 650

　　Tooth height (mm) 1.5 ± 0.1 Pitch (mm) 12.7 ± 0.1

　　Thread direction left turn

　　Standard length (m) 2.0 3.0 3.5 4.0 4.5 5 6 (can be customized according to needs)

　　Length error ± 1%, drilling depth above 12 meters

　　zmjt055

AfterSalesService :

• Self advancing anchor rod