Tanrimine Metal Support Co., Ltd.

What steps should we know during the mining bolt construction?

To make the mining way safe, there needs the product such as Split Set, Friction Bolt , Split Set Washer, Mining Mesh, Combi Plate, Strata Bolt, Rock Bolt, Mine Rock Bolt, friction stabilizer, and so on.

what steps of mining bolt construction we need to know? The following five points are the main points of mining bolt construction. Welcome your comments.
1. Positioning: After the section is excavated and qualified, draw the hole position of the anchor bolt on the rock face, according to the design requirements.
2. Drilling: drilling technical requirements: aperture 38~42 mm; The opening deviation is less than 2%, and the hole depth is 3~ 5cm longer than the insertion part of the bolt.
3. Installing the combi plate: are added to the tail of the anchor rod after the grouting is completed. After grouting 24 hours, tighten the nut, fastening force in 10KN/m~20KN/m is preferable.
4. Insert the mine bolt slowly 3 to 5 centimeters away from the bottom of the hole. After the rod body is inserted, the hole should be plugged tightly with cement slurry or other materials in time, and the exhaust hole should be set up.
5. Mining bolt grouting: the grouting pressure should be around 0. 5 to 0. 8Mpa, so that the grout slowly injection, when there is grout out of the vent hole of mining bolt, close the vent hole, stable pressure injection 3~5 minutes after the stop grouting.

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Post time: Feb-16-2023
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