Unloading, anchoring and buffering regulation and control method for underground engineering dynamic disasters

A technology for dynamic disasters and underground engineering, which is applied in the direction of earth drilling, bolt installation, mining equipment, etc., can solve the problems of limited power prevention and control effects, and achieve the effects of reducing the possibility, simple analysis of monitoring data, and simple operation process

Active Publication Date: 2021-06-29
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Construction pressure release holes and water injection are commonly used local hazard relief technologies, but the effect of dynamic prevention and control is very limited. Bolt support is a commonly used surrounding rock control technology, but there are still many problems in the prevention and control of dynamic disasters

Method used

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  • Unloading, anchoring and buffering regulation and control method for underground engineering dynamic disasters
  • Unloading, anchoring and buffering regulation and control method for underground engineering dynamic disasters

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Embodiment Construction

[0028] Figure 1~2 It is the best embodiment of the present invention, below in conjunction with attached Figure 1~2 The present invention will be further described.

[0029] Such as figure 1 As shown, an unloading, anchoring and buffering control method (hereinafter referred to as the control method) for dynamic disasters in underground engineering includes the following steps:

[0030] Step 1001, opening a pressure relief hole 4;

[0031] Carry out drilling operations in the surrounding rock 1 in the dynamic disaster area of ​​the underground engineering, form a number of pressure relief holes 4, and clean the pressure relief holes 4, the diameter of the pressure relief holes 4 is more than 90mm, and the hole depth is more than 1m;

[0032] Step 1002, opening anchor holes 2;

[0033] At the end of the pressure relief hole 4, the anchor hole 2 is continuously opened along the axial direction of the pressure relief hole 4, and the anchor hole 2 is cleaned. The diameter of...

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Abstract

The invention provides an unloading, anchoring and buffering regulation and control method for underground engineering dynamic disasters, and belongs to the technical field of safety prevention and control of mining industry and geotechnical engineering. The method is characterized by comprising the following steps that a-b, a pressure relief hole (4) and an anchoring hole (2) are formed; c, an anchor rod (3) is fixed; d, an expansion material is filled; e, a regulation and control system is installed; f, pressure monitoring is carried out on surrounding rock (1); g, whether the pressure value of the surrounding rock (1) exceeds a threshold value or not is judged; and h, pressure is applied to the surrounding rock (1) through a regulation and control nut (12). According to the unloading, anchoring and buffering regulation and control method for the underground engineering dynamic disasters, the energy of the surrounding rock is dissipated through the pressure relief hole, end anchoring is carried out through the anchoring hole, and damping and buffering are achieved through the expansion material. Under the monitoring of a force measuring sensor, a driving mechanism drives the regulation and control nut to rotate to adjust the pre-pressure of the surrounding rock in an unloading crushing area, and the dynamic disasters can be effectively avoided.

Description

technical field [0001] The invention relates to an unloading, anchoring and buffering control method for dynamic disasters in underground engineering, which belongs to the technical field of safety prevention and control of mining and geotechnical engineering. Background technique [0002] Surrounding rocks of underground engineering have hazards such as slabs, roof caving, water inrush, and rockburst dynamic disasters, which not only cause support failure, affect the progress of the project, and even cause earthquakes, posing a direct threat to staff and equipment. With the continuous increase of underground space development and mining depth, the ground pressure is getting higher and higher, the frequency and intensity of dynamic disasters such as rockbursts have increased significantly, engineering disasters have become increasingly serious, and safety issues need to be solved urgently. The key problem to be solved urgently in engineering disaster prevention and mitigation...

Claims

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Application Information

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IPC IPC(8): E21D20/02E21F17/00E21F17/18
CPCE21D20/003E21D20/02E21F17/00E21F17/18
Inventor 张晓君王宇晨刘啸
Owner SHANDONG UNIV OF TECH
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