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Roof reinforcement grouting equipment and grouting method

A technology for grouting and equipment, applied in the direction of drilling equipment and methods, mining equipment, drilling equipment, etc., can solve the problems of increasing the amount of grout used, increasing the amount of engineering and operating costs, etc., to achieve reduced engineering, simple structure, and guaranteed The effect of stability

Active Publication Date: 2020-09-18
哈密豫新能源产业研究院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it needs to re-drill the ordinary bolt holes for anchoring after grouting, which increases the amount of engineering and operating costs, and increases the amount of grout used

Method used

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  • Roof reinforcement grouting equipment and grouting method
  • Roof reinforcement grouting equipment and grouting method
  • Roof reinforcement grouting equipment and grouting method

Examples

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Effect test

Embodiment 1

[0024] Such as figure 1 As shown in -4, a roof reinforcement grouting equipment includes a funnel-shaped grouting cutter head 5, an inner sleeve 8 and an outer sleeve 10, the inner sleeve 8 and the outer sleeve 10 are both open at the top, and the inner sleeve 8 is located The inside of the tube 10, and the top of the inner sleeve 8 and the top of the outer sleeve 10 are welded and fixed by a circular steel plate 11; the inner wall of the inner sleeve 8 is bonded with an inner air bag 6, and both sides of the inner air bag 6 are provided with mounting holes 13 The 5 heads of the funnel-shaped grouting knife include a bucket bottom 501 and a grouting pipe 502, the bucket bottom 501 is bonded to the inner wall of the inner airbag 6, and the grouting pipe 502 passes through the installation hole 13 and extends to the outside of the outer wall of the inner airbag The position corresponding to the installation hole 13 on the outer sleeve 10 is provided with a through hole 12 for th...

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Abstract

The invention discloses roof reinforcement grouting equipment and a grouting method. The grouting equipment comprises a funnel grouting cutter head, an inner sleeve tube and an outer sleeve tube, theinner sleeve tube and the outer sleeve tube are all opened at the top ends, the inner sleeve tube is located in the outer sleeve tube, and the top ends of the inner sleeve tube and the top end of theouter sleeve tube are fixedly connected through a ring-shaped steel plate; an inner air bag is pasted on the inner wall of the inner sleeve tube, and mounting holes are formed in the two sides of theinner air bag; the funnel grouting cutter head comprises a funnel body bottom and a grouting pipe, the funnel body bottom is pasted on the inner wall of the inner air bag, the grouting pipe penetratesthrough the mounting holes and extends to the outer side of the outer wall of the inner air bag, and a through hole for penetrating of the grouting pipe is arranged on the position, corresponding tothe mounting holes, of the outer sleeve tube; an outer air bag is pasted on the outer side of the upper end of the outer sleeve tube; and vent holes are formed in the bottom of the outer sleeve tube,the vent holes are covered with a breathable blocking cloth, and the breathable blocking cloth is pasted on the outer wall of the bottom of the outer sleeve tube. The roof reinforcement grouting equipment is simple in structure and convenient to operate, regular bolt holes are not needed to be punched after grouting is conducted, and the engineering quantity is lowered.

Description

technical field [0001] The invention belongs to the technical field of mine roadway support, and in particular relates to roof reinforcement grouting equipment and a grouting method. Background technique [0002] In the engineering application of bolt support, the failure mode of the bolt is mainly the sliding between the bolt and the hole wall when encountering the coal ash adhered to the hole wall or the broken and soft surrounding rock during the anchoring process. In order to solve the problem of bolt slipping and instability, the bolt hole reaming method is often used in the prior art to solve such problems, such as the prior art CN 109779662 A which discloses a soft coal rock roadway bolt The method of reaming and filling support at the bottom of the hole is to ream the hole at the bottom of the anchor hole, and then perform grouting. After the grouting, re-drill the ordinary anchor hole for anchoring. Rock properties, increase the bolt anchoring performance. However...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D20/00E21D20/02E21B7/28
CPCE21B7/28E21D20/003E21D20/02
Inventor 南华南龙飞吉永辉高康睿刘娜
Owner 哈密豫新能源产业研究院有限责任公司
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