Anchoring is widely used in tunnel for pre-support, slope, coast, mine, water conservancy projects, Building foundation, roadbed reinforcement and geological faulty treatment such as landslip, crack, and sink age, it’s irreplaceable in narrow construction environment.
ADVANTAGES
Self Drilling Hollow Bar Anchor System:
Comprised of a hollow threaded bar attached with a drill bit that performs drilling. The hollow bar allows air and water to freely pass through the bar during drilling to remove debris, after drilling at the required depth is completed, grout fills the hollow bar through the pressure for their requirement and completely covers the entire bolt.
Coupler:
The coupler can be used to join hollow bars and extend the bolt length, it means the anchor can be elongated with the couplers.
Plate and nut :
The plate and nut are installed according to their design requirement.
Drill bit:
The drill bit would be selected at the choice of ground condition.
Hollow Anchor Bar | |||||
Size | Outer Dia. | Inner Dia. | Ultimate Load | Yield Load | Weight |
(mm) | (mm) | (kN) | (kN) | (Kg/m) | |
S-T30/16 | 30 | 16 | 220 | 180 | 2.9 |
S-T30/14 | 30 | 14 | 260 | 220 | 3.35 |
S-T30/11 | 30 | 11 | 320 | 260 | 3.6 |
E-T30/14 | 30 | 14 | 320 | 260 | 3.35 |
Coupler | ||||
Size | Outer Dia. | Length | Weight | Note |
(mm) | (mm) | (Kg/pc) | ||
S-T30 | 38 | 105 | 0.39 | With sealing structure |
E-T30 | 38 | 105 | 0.45 | Without sealing structure |
Drill Bit | |||
Type | Outer Dia. | Weight | Application Range (Advice) |
(mm) | (Kg) | ||
Hardened cross bit | 42mm | 0.30kg | Hardened cross bit for loose to medium dense ground conditions |
46mm | 0.32kg | ||
51mm | 0.40kg | ||
76mm | 0.56kg | ||
TC cross bit | 42mm | 0.30kg | TC cross bit for soft to medium rock formations |
46mm | 0.32kg | ||
51mm | 0.40kg | ||
Hardened button bit | 42mm | 0.30kg | Hardened button bit for unconsolidated rock with boulders |
46mm | 0.32kg | ||
51mm | 0.40kg | ||
TC button bit | 46mm | 0.45kg | TC button bit for medium rock formations |
51mm | 0.69kg | ||
Hex Nut | ||||
Size | Key Size | Length | Weight | Hardness |
(mm) | (mm) | (Kg/pc) | (HRC) | |
S-T30 | 46 | 35 | 0.31 | 25-30 |
Spherical Collar Nut | ||||
Size | Dimensions | Thickness | Hole Dia. | Weight |
(mm) | (mm) | (mm) | (Kg/pc) | |
S-T30 | 46 | 35 | 0.33 | 290-340 |
Anchor plate | ||||
Size | Dimensions | Thickness | Hole Dia. | Weight |
(mm) | (mm) | (mm) | (Kg/pc) | |
S-T30 | 150×150 | 25 | 40 | 4.2 |
200×200 | 8 | 36 | 2.43 | |