Connectable super-long anchor rod

A bolt and super-long technology, which is applied in the installation of bolts, mining equipment, earthwork drilling and mining, etc., can solve the problems of small anchor cable elongation, low anchor cable elongation, and roof drop, etc., and achieve large anchoring depth and extensive The effect of high practicality and carrying capacity

Pending Publication Date: 2019-03-19
LIAOCHENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in large-deformation roadways, the deformation of the surrounding rock of the roadway is serious. Due to the low elongation rate of the anchor cable, it cannot adapt to the deformation of the surrounding rock and is easy to break. very good support effect

Method used

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  • Connectable super-long anchor rod
  • Connectable super-long anchor rod
  • Connectable super-long anchor rod

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] The anchor rod of the present invention not only has the advantages of large anchoring depth and high bearing capacity, but also has the characteristics of high elongation; the anchor rod can increase or decrease the size of the anchor rod according to the actual situation of the roadway to achieve the effect of stable support; Compared with the anchor rod, it has a large length and is not limited by the space of the roadway; compared with the anchor cable, it has a high elongation rate, can effectively maintain the stability of the roadway, and has a wide range of practicability.

[0029] The application principle o...

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Abstract

The invention belongs to the field of coal mine tunnel surrounding rock supporting devices and discloses a connectable super-long anchor rod. The connectable super-long anchor rod is provided with a first steel rod body, the first steel rod body is provided with a first connector and a second connector, the first connector is provided with a first steel rod-first connector outer thread, and the second connector is provided with a second steel rod body-second connector inner thread. The second steel rod bod is provided with a first connector and a second connector, the first connector is provided with a second steel rod-first connector outer thread, and the second connector is connected with an anchorage device. The anchor rod has the advantages of large anchorage depth and high bearing capability, also has the advantage of high extension rate. The size of the anchor rod can be increased and decreased according to the actual situation of a tunnel, and a stable supporting effect is achieved. Compared with a common anchor rod, the length of the connectable super-long anchor rod is large and is not limited by tunnel space. Compared with an anchor rope, the extension rate is high, the tunnel stability can be effectively maintained, and the connectable super-long anchor rod has wide practicability.

Description

technical field [0001] The invention belongs to the field of support devices for surrounding rocks in coal mine roadways, in particular to a super-long bolt for connection. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] Bolts are widely used in coal mine roadway support. At present, the length of bolts in my country generally does not exceed 3.0m. When the roadway roof is broken and thick, the original short bolts cannot meet the support requirements, and roof fall accidents are prone to occur. The height of the underground roadway is generally 2-3m, and the anchor rod of 4-5m cannot be constructed due to the limitation of the roadway space, and the roof can only be controlled by the anchor cable. However, the elongation rate of the anchor cable is low, and it is easy to fail when the deformation of the roadway is large. The elongation rate of the long anchor rod is larger than that of the anchor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D21/00
CPCE21D21/0046E21D21/0006E21D21/0026
Inventor 刘万荣
Owner LIAOCHENG UNIV
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