An energy-absorbing bolt with the function of monitoring the deformation of surrounding rock and its construction method

A technology of surrounding rock deformation and energy-absorbing rods, which is applied in the installation of anchor rods, earthwork drilling, mining equipment, etc., can solve problems such as difficulty in adapting to high ground stress support requirements, and achieve the effect of ensuring stability

Active Publication Date: 2021-10-08
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiency that the existing bolt support system is difficult to adapt to the support requirements of high ground stress or large deformation of surrounding rock in deep environment, the present invention aims to provide an energy-absorbing bolt with the function of monitoring deformation of surrounding rock and Its construction method, which has deformation and compression resistance, uses high-strength energy-absorbing bolts that can monitor the deformation function of the surrounding rock to exert the self-bearing capacity of the surrounding rock, and control and monitor the deformation and destruction of the surrounding rock

Method used

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  • An energy-absorbing bolt with the function of monitoring the deformation of surrounding rock and its construction method
  • An energy-absorbing bolt with the function of monitoring the deformation of surrounding rock and its construction method
  • An energy-absorbing bolt with the function of monitoring the deformation of surrounding rock and its construction method

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Embodiment 1

[0044] First of all, it should be noted that the first side in this embodiment refers to figure 1 or Figure 4 The left side in this example refers to the second side as figure 1 or Figure 4 In the right side, the first end in this embodiment is as figure 1 or Figure 4 The end on the left side, the second end in this embodiment is as figure 1 or Figure 4 In the right end of the center, the first thread segment is as figure 1 or Figure 4 The thread segment on the left side of the center, the second thread segment is as figure 1 or Figure 4 The threaded segment on the right side of the center.

[0045] Such as figure 1 , Figure 4As shown, an energy-absorbing bolt with the function of monitoring surrounding rock deformation includes an auxiliary casing 13, an anchor head, an energy-absorbing rod body 4, a bearing 7, a tray 6, and a fastening nut 8, wherein the anchor head includes an expansion shell 1 and The anchor head body has an enlarged end 2, the anchor he...

Embodiment 2

[0061] Embodiment 2 discloses a construction method of an energy-absorbing bolt with the function of monitoring the deformation of surrounding rock, including the following steps:

[0062] 1) Use a suitable drill bit to open the hole, the hole diameter is slightly larger than the diameter of the expanded end of the bolt, and then clean the hole to ensure that there is no residue in the hole;

[0063] 2) After screwing the auxiliary sleeve and the expansion shell of the anchor rod into engagement, place it in the drill hole, fix the auxiliary sleeve outside the drill hole after adjusting the position, and rotate the anchor rod body so that the first threaded section and the expansion shell Screw into the bite, the expanded end squeezes into the expansion shell, so that the volume of the expansion shell increases, squeezes the wall of the borehole, and fixes the anchor rod;

[0064] 3) After the anchor bolt is fixed, reversely rotate the auxiliary sleeve to make the auxiliary sl...

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Abstract

The invention discloses an energy-absorbing bolt with the function of monitoring the deformation of surrounding rock, which comprises an auxiliary casing, an energy-absorbing rod body and a bearing, the first end of the energy-absorbing rod body is connected to the anchor head, and the second end of the energy-absorbing rod body is connected to the anchor head. The bearing is axially connected, and the auxiliary sleeve is sleeved on the outside of the energy-absorbing rod body; the energy-absorbing rod body is twisted when it is subjected to the tension of the surrounding rock, resulting in relative angular displacement, and the bearing is provided with a scale for displaying the size of the relative angular displacement generated ; Wherein, one end of the anchor head is expanded to form an enlarged end, the outer side of the anchor head is also sleeved with an expansion shell, and the outer side of the expansion shell is threadedly connected to the auxiliary casing. The invention uses a high-strength energy-absorbing bolt capable of monitoring the deformation function of the surrounding rock to exert the self-bearing capacity of the surrounding rock, and control and monitor the deformation and destruction of the surrounding rock.

Description

technical field [0001] The invention relates to the field of bolt support, in particular to an energy-absorbing bolt capable of monitoring deformation of surrounding rock and a construction method thereof. Background technique [0002] As the buried depth of underground engineering continues to increase, the stress of the original rock continues to increase. At this time, the surrounding rock often suffers from large deformation of the surrounding rock, rockburst, roof fall, and slabs under the condition of high ground stress. Bolt is a widely used supporting component, which has been used for more than 100 years. Bolt support can significantly improve the bearing capacity of surrounding rock and improve its stability, so it is widely used in various rocks such as mines and tunnels. field of soil engineering. [0003] At present, ordinary rigid bolts are often used in underground engineering. The inventor believes that with the gradual development of underground engineering...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D21/00
CPCE21D21/0026E21D21/0093
Inventor 薛翊国张贯达林春金周炳桦公惠民
Owner SHANDONG UNIV
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