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Hollow bolt: What are the advantages and operation methods of hollow bolts for mining

Hollow bolt: What are the advantages and operation methods of hollow bolts for mining

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  • Time of issue:2020-10-16 16:46
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(Summary description)Compared with traditional metal bolts, hollow bolts have irreplaceable advantages. From the characteristic point of view, the rod body is easy to be laser cut and has a maintenance effect on the shearer blade; explosion-proof and anti-static

Hollow bolt: What are the advantages and operation methods of hollow bolts for mining

(Summary description)Compared with traditional metal bolts, hollow bolts have irreplaceable advantages. From the characteristic point of view, the rod body is easy to be laser cut and has a maintenance effect on the shearer blade; explosion-proof and anti-static

  • Categories:News
  • Author:
  • Origin:
  • Time of issue:2020-10-16 16:46
  • Views:
Information

  Compared with traditional metal bolts, hollow bolts have irreplaceable advantages. From the characteristic point of view, the rod body is easy to be laser cut and has a maintenance effect on the shearer blade; explosion-proof and anti-static, not easy to cause flames in the laser cutting process, is extremely beneficial to the construction safety of the coal road construction site, and is very suitable for areas with high gas concentration; High strength corrosion resistance, light weight, easy to operate, the net weight is only 1/4 of the steel bolts of the same specification and model . Compared with metal bolts, it can be conveniently used in narrow indoor spaces, such as tunnel construction and coal mines, making engineering construction easier, thereby reducing the labor efficiency of employees, lowering the price , and reducing the cost of bolt support by 10 %.

  Hollow bolts for mines are bolts used for coal mine supports. The total length of this bolt is equal to the strength, and the length can be extracted as needed. It has good anchoring characteristics, simple and reliable, high compressive strength, and high engineering construction level. Other advantages make it suitable for lightning protection support and can also be used as support for other engineering projects.

  The operation process of hollow bolts for mining is:

  1. It is recommended to drill bolt holes, the depth of the hole should be 80-100mm shorter than the bolt body.

  2. Clean the rock dust in the bolt holes.

  3. Before loading the drug coil, the quality of the drug coil should be checked, and the drug coil that is ineffective against cracks cannot be used.

  4. Feed the epoxy resin coil into the retina, then fix the coil with an anchor rod, and then start stirring. After stirring, remove the special stirring tool. After 4-6 minutes, remove the mixing tee joint and place it on the tray. After 40 minutes, tighten the nut with a special wrench.

  Hollow bolts are the most basic component of coal roadway support in today's coal mines. In addition to hollow mine bolts for mining, they are also used for slope protection in engineering design, tunnel construction and structural reinforcement of dam foundations.

  Luoyang Xinben Machinery Equipment Co., Ltd. is a hollow bolt manufacturer that produces hollow grouting bolts. Welcome to buy!

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