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Hollow grouting bolt

Hollow grouting bolt
Click:  Update:2016-12-12 21:15:53  【Print】  【Close

The hollow grouting bolt is made of a metal rod body and its accessories, and the metal rod body is made of seamless steel tube cold rolling. Hollow grouting anchor is a kind of drilling, grouting, anchoring function be made one product. Hollow grouting bolt is suitable for the medium of geological conditions of permanent support and advanced support. Through the pressure grouting of the anchor rod body, can achieve the purpose of the consolidation of broken rock, cut off gas or groundwater and rod body corrosion, can quickly form a supporting force, control the stability of surrounding rock. Hollow design enables the bolt to achieve the function of the grouting pipe, not only to avoid the traditional construction process caused by the loss of mortar. And the grouting is full, and can realize the pressure grouting, improve the engineering quality. Because of the role of various parts, the center of the rod body is good, the mortar can be the full length of the rod, to avoid the corrosion, to achieve the purpose of long-term support.

Hollow grouting anchor related technical standards

Project

MZGK110-42/25

MZGK210-50/32

Rod diameter mm

25

32

Rod diameter mm

15

18

Wall thickness mm

5

7

Straightness mm/m

2

2

Screw distance mm

12.5

12.5

Thread height mm

1.5

1.5

Rod length mm

14002600)±10

14002800)±10

Minimum anchorage length mm

1000

1000

Applicable bore diameter mm

42

50

Pole body kN

  110

210

Elongation at break %

        6.0

       6.0

Anchoring force kN

80

130

Screw nut bearing capacity kN

80

130

Tray bearing capacity kN

80

130