Broken coal roadway reinforced anchoring type yielding grouting anchor rod anchoring device and using method thereof

A technology of grouting bolts and anchoring devices, which is applied in the direction of installation of bolts, earthwork drilling, mining equipment, etc., and can solve the problem that it is difficult to meet the yield requirements of deep large-deformed roadways, and the anchoring device is unanchored without overcoming the yield deformation. Fully consider the problems of insufficient anchoring strength to achieve the effect of making up for the insufficient anchoring strength, improving the efficiency of grouting operations, and resisting aging and corrosion failure
CN113107560AActive Publication Date: 2021-07-13内蒙古双欣矿业有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
内蒙古双欣矿业有限公司
Publication Date
2021-07-13

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Abstract

The invention discloses a broken coal roadway reinforced anchoring type yielding grouting anchor rod anchoring device and a using method thereof, and belongs to the technical field of underground engineering supporting. The broken coal roadway reinforced anchoring type yielding grouting anchor rod anchoring device comprises an elastic yielding assembly, a plastic yielding assembly and a reinforced anchoring structure, wherein the elastic yielding assembly is composed of a metal tray, positioning rods, annular vulcanized rubber air bags, metal isolation pieces and a limiting plate; the plastic yielding assembly is composed of a porous metal disc, a necking round rod and a high-strength porous extrusion plate; and the reinforced anchoring structure is composed of a hollow grouting anchor rod, a resistance increasing pawl sleeve and the like. The hollow grouting anchor rod and the resistance increasing pawl sleeve can effectively improve the anchoring strength and improve the mechanical property of the coal and rock mass, and when the coal and rock mass deforms, through coordinated work of the elastic yielding assembly and the plastic yielding assembly, good large-deformation yielding work efficiency is achieved, the anchor rod is effectively prevented from being broken due to overload, and the stability and the use safety of the coal rock mass and the supporting structure are maintained, the supporting requirement of the deep high-stress broken coal roadway is met, and the anchor rod anchoring device has the advantages of high anchoring strength, constant-resistance yielding, reasonable structure and the like.
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Description

technical field

[0001] The invention relates to the field of underground engineering support, in particular to an enhanced anchorage-type yielding grouting bolt anchorage device and a method thereof which are suitable for deep large-deformation broken coal roadways. Background technique

[0002] In recent years, as the mining depth of coal mines, metals and other mineral resources has been continuously increased, the mining environment and geological conditions are becoming more and more complex and changeable. The support of deep high-stress coal roadways is difficult, and the surrounding rock is still unstable after repeated repairs, which poses a huge threat to construction personnel and production equipment. It is an urgent technical problem to be solved for the safe and efficient development of deep coal mine resources in my country.

[0003] As an effective support form commonly used in surrounding rock control, bolt has been widely used in the field of underground engi...

Claims

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