Water Expansion Anchors
Product Description
The water swelling anchor is composed of seamless steel pipes. Its working principle is to first press the steel pipe into a flat shape and then form a circle. When using it, first insert the anchor into the anchor hole, and then inject high-pressure water into the flat and circular steel pipe to force The steel pipe expands and becomes a round shape, and the friction between the expansion pressure of the steel pipe and the squeeze of the hole wall serves as anchoring force for support. It is suitable for soft rock, broken zones, etc.
Product Aarameters
| JIUFU Swellex Bolt | PM12 | PM16 | PM24 |
| Minimum Breading Load (kN) | 110 | 160 | 240 |
| Minimum Elongation A5 | 10% | 10% | 10% |
| Minimum Yield Load (kN) | 100 | 130 | 130 |
| Inflation Water Pressure | 300bar | 240bar | 240bar |
| Hole Diameter (mm) | 32-39 | 43-52 | 43-52 |
| Profile Diameter (mm) | 27 | 36 | 36 |
| Tube Thickness (mm) | 2 | 2 | 2 |
| Original Tube Diameter (mm) | 41 | 54 | 54 |
| Upper BushingDiameter (mm) | 28 | 38 | 38 |
| Bushing Head Diameter (mm) | 30/36 | 41/48 | 41/48 |
| Length(m) | Weight(kg) | ||
| 1.2 | 2.5 | ||
| 1.5 | 3.1 | ||
| 1.8 | 3.7 | 5.1 | 7.2 |
| 2.1 | 4.3 | 5.8 | 8.4 |
| 2.4 | 4.9 | 6.7 | 9.5 |
| 3.0 | 6.0 | 8.2 | 10.6 |
| 3.3 | 6.6 | 8.9 | 12.9 |
| 3.6 | 7.2 | 9.7 | 14.0 |
| 4.0 | 8.0 | 10.7 | 15.6 |
| 4.5 | 9.0 | 12.0 | 17.4 |
| 5.0 | 9.9 | 13.3 | 19.3 |
| 6.0 | 11.9 | 15.9 | 23.1 |
Product Installation
The anchor rod is installed in the anchor hole and high-pressure water is injected. After the water pressure exceeds the elastic limit of the pipe wall material, the rod body undergoes permanent plastic expansion and deformation along with the geometry of the anchor hole, making it firmly embedded in the surrounding rock. Generates great friction; in addition, when the rod body expands, the anchor rod puts greater pressure on the surrounding rock mass, forcing the surrounding rock to strain and increasing the stress of the surrounding rock. In turn, the surrounding rock also squeezes the anchor rod body accordingly. Stress, and during the process of water-filled expansion of the hydraulic expansion anchor, its diameter changes from thin to thick, and there is a certain amount of shrinkage along the longitudinal direction, which causes the anchor plate to be pressed tightly against the surface of the surrounding rock, generating upward supporting force. , thereby applying prestress to the surrounding rock.
Product Advantages
What are the advantages of water-rising anchor rods?
1.Fewer parts, simple to use, easy to operate, not only saves labor costs, but also saves time for other processes and reduces the cost of composite materials.
2.The materials used will not suffer loss, waste, or deterioration, and will not cause environmental pollution during the construction process.
3.Applicable to various complex geological conditions.
4.Compared with other anchor rods, the safety factor of the anchor rod is higher.
5.High shear resistance.
Product Applications
