Hollow grouting bolt

一、Product overview

Hollow grouting bolt is hot-rolled by high strength steel pipe, which is mainly composed of rod body, stopper plug, tray, nut and other parts. In the roadway support of underground coal mine, a trinity structure of end anchor, full anchor and grouting can be formed. The hollow bar body is used for pressure grouting, so as to achieve the purpose of consolidating the broken rock mass, separating the underground water body and the bar body's own anticorrosion, and the stability of surrounding rock. It can be used for both permanent support of underground roadway and advanced support of roadway.

二、Scope of application

Hollow grouting bolt is used as permanent support of surrounding rock, advance support of highway, railway, tunnel, slope protection, foundation pit support, mining and other geotechnical anchorage engineering.

三、Product characteristics

The bar body with new hollow structure realizes the function of pressure grouting

The anchor bolt body can be full length wrapped in grouting material, prevent the corrosion of the bolt body, prolong the supporting time

The physical and mechanical properties and elongation of the rod are improved by hot rolling

Large penetration range of grouting liquid, strong anchoring force, simple and convenient installation; The high pressure grouting can make the grout penetrate into the cracks in the rock strata and anchor the broken rock mass into a whole, forming deep three-dimensional anchoring

四、 Product specifications and models

Type composition and its meaning

appearance

五、 Product technical parameters