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A Coordinated Control Method of Pressure Relief Support in Deep High Stress Roadway Based on Drilling Pressure Relief

A drilling pressure relief and coordinated control technology, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve problems affecting popularization and application, control of unfavorable roadway surrounding rock creep, disturbance of roadway surrounding rock primary support structure, etc. , to achieve the effect of reducing cost, reducing repair rate and labor intensity of workers, and reducing large deformation

Active Publication Date: 2018-03-13
HENAN POLYTECHNIC UNIV
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Problems solved by technology

However, the application of this method will undoubtedly cause certain disturbances to the strength of the roadway surrounding rock and the primary support structure, which is not conducive to the control of the creep of the roadway surrounding rock in the later stage of excavation. There are certain limitations in roadways with long service life (big alleys, up and down hills, etc.), which affect the popularization and application of this technology

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  • A Coordinated Control Method of Pressure Relief Support in Deep High Stress Roadway Based on Drilling Pressure Relief
  • A Coordinated Control Method of Pressure Relief Support in Deep High Stress Roadway Based on Drilling Pressure Relief
  • A Coordinated Control Method of Pressure Relief Support in Deep High Stress Roadway Based on Drilling Pressure Relief

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Embodiment

[0036] Refer to the following figure 1 , figure 2 , image 3 , Figure 4 , Figure 5To further illustrate the specific implementation of the present invention, a coordinated control method for deep high-stress roadway pressure relief and support based on drilling pressure relief, the method is divided into primary pressure relief support, drilling pressure relief and two There are three steps of sub-high-strength anchor-grouting support, the key point of which is to grasp the timing of drilling pressure relief and the timing of secondary anchor-grouting support. The concrete implementation steps of this method are as follows:

[0037] a. The test roadway is excavated by smooth blasting method. After the roadway is excavated, the floating gangue is quickly cleaned, and the working face is followed by a support. The high-strength yield anchor 1 and the high-strength yield anchor cable 2 are used to complete the deep high-stress roadway. initial support.

[0038] The imple...

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Abstract

The invention discloses a pressure-relief support coordination control method for a deep high-stress tunnel based on borehole pressure relief. The method comprises three steps according to a time sequence, and the three steps are respectively a primary pressure relief support step, a borehole pressure relief step and a secondary high-strength anchor grouting support step. According to the pressure-relief support coordination control method for the deep high-stress tunnel based on borehole pressure relief, surrounding rock deformation in each stage is controlled by adopting different support and reinforcement methods according to difference of surrounding rock deformation ways in different stages after the tunnel is excavated, the support performances of surrounding rocks and supporting structures are fully played, and large deformation of the surrounding rocks of a deep high-stress tunnel is reduced, so the stability of the tunnel can be maintained for a long time. Meanwhile, the method disclosed by the invention is capable of effectively reducing the repair rate of the tunnel, alleviating the labor intensity of workers and lowering the comprehensive support cost of a mine.

Description

technical field [0001] The invention relates to the field of roadway surrounding rock control, in particular to a deep roadway surrounding rock stability control method, in particular to a deep high-stress roadway pressure relief support coordination control method based on drilling pressure relief. Background technique [0002] With the continuous development of society, especially the strong dependence on resources, the development of resources is becoming wider and deeper; among many energy sources, the use of coal has made great contributions to the development of society in many fields. Outstanding contribution, and the safety of coal development has always been the top priority of many parties. [0003] After the coal mine enters deep mining, the coal rock mass is under the action of high ground stress, high and low temperature, high osmotic pressure and strong time effect for a long time. long-term stability. Surrounding rock stress, lithology and support are the ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F17/00E21D20/00E21D11/10E21D9/00
CPCE21D9/006E21D11/10E21D20/00E21F17/00
Inventor 王猛褚廷湘肖同强石亚康刘恩来
Owner HENAN POLYTECHNIC UNIV
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