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Coated mining bolt

A technology for mines and coatings, which is used in mining equipment, bolt installation, earth-moving drilling, etc.

Inactive Publication Date: 2012-12-05
TERRASIMCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] Additionally, despite known composite materials, there is a need for alternative PET materials that are less brittle

Method used

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  • Coated mining bolt
  • Coated mining bolt
  • Coated mining bolt

Examples

Experimental program
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Embodiment Construction

[0092] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0093] look now figure 1 , shows an exemplary mining bolt 10 according to the present invention for mine roof reinforcement, in particular for fixing in rock. The mining bolt 10 includes a first end 12 and a second end 14 . An anchor head 16 having a shoulder 18 is provided proximate end 12 . The first central portion 20 extends between the ends 12, 14 and has a first specific gravity. In a preferred exemplary embodiment, the first central portion 20 is formed from steel. In another embodiment, the first central portion 20 is formed from fiberglass. On the first central portion between the ends 12, 14 is provided a second peripheral portion 22 having a second specific gravity. Although in figure 1 Not specifically shown, the second peripheral portion 22 may extend completely to the one or more shoulders 18 and ends 12, 14 of the mining bolt 10.

[0094] In a preferred exemplary embodiment, the second peripheral ...

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Abstract

A mine support includes an elongate metal member and a coating comprising post-consumer recycled thermoplastic disposed on the member.The thermoplastic may include post-consumer recycled poly(ethylene terephthalate), and the coating may be an injection molded coating. A first layer of the coating may be provided with a thickness at least about 0.1 mm and a crystallinity between about 16% and about 30%, and a second layer of the coating may be provided with a thickness at least about 0.1mm and a crystallinity between about 6% and about 14%. Either the first layer or second layer may contact the elongate metal member.

Description

field of invention [0001] The present invention relates to a mining bolt and a method of application thereof. In particular, the present invention relates to a grouted system for mine roof reinforcement comprising a mining bolt having a central portion formed of a first material, and a second material formed the surrounding part. Background of the invention [0002] The primary roof bracing system used in coal mines consists of headed rebar anchors, typically 4-6 feet in length and 3 / 4 and 5 / 8 inch diameter, used with infused resin for 1 inch hole. [0003] Grouting is usually performed using multi-compartment resin cartridges. For example, as described by Llewellyn in U.S. Patent No. 3,861,522, a divided package can be used in which a longitudinal film made of film is sealed to the inner wall of a round tubular member also made of a septum Above, at least two continuous longitudinal linear connections are formed between them in a form such that the volume of the resulti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D21/00B29C45/14B29C45/16
Inventor W·J·西蒙斯W·N·西蒙斯
Owner TERRASIMCO