Rebar Bolt

Synopsis:

Twist anchors are the most basic component of roadway support in contemporary underground mines. They bind the roadway rock together and enable the rock to support itself in Anchors are used not only in mines, but also in engineering to actively reinforce slopes, tunnels, dams, and so on.

Specifications and parameter：

Product Details：

Twist anchor is divided into two kinds, one is rebar twist anchor, that is, in the head of the anchor screw part of the twist, than ordinary twist anchor preload, the other is to make use of various specifications of round steel made of round steel head to make a section of the twist.

Its characteristics: fast growth of strength, high strength, after installation, not only can withstand the load in time, but also a large anchoring force. Easy installation and operation, low labor intensity of workers, high support efficiency. The cost of tons of coal support is low.

Product Advantage:

1.Twist anchor is a kind of anchor used for underground support in coal mine, full-length iso-strength, the length can be intercepted at will, good anchorage.

2.Large pre-tensioning force:Reasonable structure, large pre-tensioning force, can automatically adjust the direction of force, enhance the binding force on the surrounding rock, simple operation, low price.

3, has good anti-skid: because the front section of the twist type structure makes it has good anti-skid, and has the advantages of easy installation, long service life, high reliability, it is widely used in mining, industry, bridges and other projects.

Installation and use：

The use of installation in strict accordance with the technical specifications for the construction of coal mine prestressing anchorage, the implementation of MT/T879-2000 standard anchoring agent must be consistent with the People's Republic of China coal industry standards MT146.1-2011 standards, the tray must use GB700-2006 carbon structural steel materials.

a. The metal rod body of resin anchor with required specification is transported and placed at the roof plate in the coal mine.

b. At the center point of the resin anchor to be installed at the roof plate, use the wind drill to drill a certain specification depth of the anchor hole, the diameter of the hole is the anchor head of the anchor + (4-6) mm, and the depth is the total length of the anchor - (10-20) mm.

c. One end of the anchor shear head will be loaded with resin medicine roll, using 1.2kw coal electric drill as power, with a connecting device (special casing) and the anchor threaded connection, while rotating and stirring to advance the bottom of the hole. Stirring time for super fast resin volume 8-15s, other resin volume 20-35s. stirring stops, should wait for gelation, before loosening the electric drill and connecting device anchor body according to the geological conditions of the layout, threaded end will be installed tray, plastic washers, hexagonal nuts with a force wrench to tighten.