The anchor bolt of Metis with good application value

IMT Bolt is composed of hollow anchor bar, expansion shell, anchor nut & anchor plate, which is widely used in the medium or hard rock for temporary support and permanent support.

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An anchor bolt is used to attach objects or structures to concrete. There are many types of anchor bolts, consisting of designs that are mostly proprietary to the manufacturing companies. All consist of a threaded end, to which a nut and washer can be attached for the external load. Anchor bolts are extensively used on all types of projects, from standard buildings to dams and nuclear power plants. They can also be used to firmly affix embed plates to a concrete foundation when used with a structural steel element. 

IMT Bolt is composed of hollow anchor bar, expansion shell, anchor nut & anchor plate, which is widely used in the medium or hard rock for temporary support and permanent support. It is more safety and efficient through the friction of the open expansion shell & drill hole.

This anchor bolt allows for a quick and easy grouting operation, where grout enters through the center hole of the bolt from the bottom and covers it completely. A plastic sealing element is used to seal the drill hole and prevent leakage of grout or resin, ensuring a complete filled hole.

MTS bolt is a typical combination mechanical bolt, including rebar, expansion shell, corrugated tubing, hemispherical dome, anchor plate and nut. And the rebar adopts two corrosion-prevention measurements on the bolt surface, hot-dip galvanizing and epoxy coating. 

It is installed as a temporary rock support and later grouted to become permanent. For its better anchoring effect and antiseptic property, It has been widely used on projects such as sub-sea tunnels, road and rail tunnels, sewer tunnels and mining, etc.

Expansion shell anchor bolt is applied for temporary and permanent support in relatively good geological conditions, especially for hard rock, horizontal bedding and jointing fissures with mud. The operation process is as following:

1. Put the expansion shell anchor bar into rock hole.

2. Rotate the expansion shell anchor bar until the expansion shell fully expanded to make friction resistance between the expansion shell and drill hole.

3. Prestress the plate and nut to make expansion shell anchor bar form a rapid anchoring force prestressing.

The prestressing on the expansion shell will form the supporting force to control the deformation of surrounding rock. It can make permanent support effect by grouting.

Large diameter anchor bolt is a type of self drilling anchor bolt, which has a larger diameter than other common sizes. It is usually applied to pipe shed and micropile.Large diameter anchor bolt is applied for constructions of shallow buried parts of tunnel portal, fault zones and sand belt in tunnel, collapsed tunnel and urban tunnel. During the construction, it will increase the safety of tunnel portal and improve the stability of tunnel because of the advanced support.

Friction rock bolt is a new kind of bolt with full length anchorage and active reinforcement function. It’s considered as the simplest supporting bolt in metal mining and tunneling industry. Its unique shape enlarges the contact area between rock and steel tube, offering higher pulling-out force than other common anchor bolt.

Duplex coating rock bolt adopts two corrosion-prevention measurements on the bolt surface. That are hot-dip galvanizing and epoxy coating, which can prevent corrosion very well.

Duplex coating rock bolt is applied to conditions which are influenced by underground water such as road, railway tunnel and subsea tunnel and which are corroded by seawater such as harbor, wharf and buildings on the sea affected.

Anchor bolts are a vital link between equipment and the foundation.So it is very important of the selection for choosing which type of anchor bolt.

Since self drilling anchor bolt is mainly used in the fault fracture zone advanced support construction, under the complex geological conditions instead of ordinary catheter, overcoming the problems such as hole collapse, unable to plug rod, grouting is not full,ect. which played a supporting role in advance, ensuring the overall stability of the surrounding rock, and the safety of construction personnel and tunnel, with good application value.Specific features are as follows:

1.High-performance grouting, filling, consolidation of rock and soil, groundwater control, it has the good quality of grouting diffusion radius and reliable anchorage.

2.Drill pipe of the self drilling anchor bolt body does not have to pull out, its empty channel can be used as grouting, grouting from inside to outside.

3.Since before self drilling anchor bolt has strong penetrating power, in general, under the action of drilling machinery can easily penetrate all kinds of rocks.

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