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Roadway atmospheric pressure support punching judgment method and system

A technology of atmospheric pressure and discrimination method, applied in tunnels, earthwork drilling, tunnel lining, etc., can solve the problems of high labor intensity, insufficient support strength, poor support quality, etc., to increase the area and reduce the labor intensity. , the effect of improving efficiency and success rate

Active Publication Date: 2021-02-19
CCTEG COAL MINING RES INST +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the above-mentioned support method is to temporarily support the surface of the surrounding rock through metal probe beams and single hydraulic props. Poor, high labor intensity

Method used

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  • Roadway atmospheric pressure support punching judgment method and system
  • Roadway atmospheric pressure support punching judgment method and system
  • Roadway atmospheric pressure support punching judgment method and system

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Embodiment Construction

[0047] In order to better understand the above-mentioned technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0048] figure 1 It is a schematic diagram of the perforation discrimination method for roadway atmospheric pressure support disclosed in an embodiment of the present application. Wherein, the formation method of the support in the roadway includes multiple operation cycle units, such as figure 1 As shown, each operation cycle unit includes the following steps: ...

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Abstract

The invention discloses a roadway atmospheric pressure support punching judgment method and system. The roadway atmospheric pressure support perforation judgment method comprises the steps of sprayinga spraying material to the surface of a newly formed roadway, so as to form a sealing spraying layer on the surface of surrounding rock, obtaining the surrounding rock parameters of the surrounding rock, judging whether the surface of the surrounding rock needs to be punched or not according to the surrounding rock parameters, if the punching is needed, punching in an unsprayed area reserved in the surface of the surrounding rock to form gas extracting holes, and extracting the gas in surrounding rock gaps through the gas extracting holes or directly extracting the gas in the surrounding rockgaps to enable the surrounding rock to be in a negative pressure state. The sealing spraying layer forms temporary support in the negative pressure state. The pressure difference can be formed between the inner surface and the outer surface of the surrounding rock by automatically extracting gas in the surrounding rock gaps, namely the interior of the surrounding rock is in a negative pressure state, and therefore the newly-formed roadway can be effectively supported through atmospheric pressure. In addition, punching judgment can be conducted according to the situation of the surrounding rock, punching is conducted in the area needing punching, and the vacuumizing efficiency and success rate are improved.

Description

technical field [0001] The present application relates to the technical field of coal mining, and in particular to a method and system for identifying holes in roadway atmospheric pressure support. Background technique [0002] Coal is the main energy source in our country, and has played an important role in promoting the national industrial development and national economic progress. The rapid excavation of coal mine roadways has become a "stuck neck" problem that restricts the safe and efficient mining of coal. Optimizing the tunneling and support process, developing efficient, safe and reliable temporary support, and improving the efficiency of permanent support are the fundamental ways to increase the speed of roadway formation. In the related technology, in the process of mining the coal mine, the surrounding rock of the coal mine roadway, that is, the surface of the surrounding rock is effectively temporarily supported immediately after the excavation section is form...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/00E21D11/10E21F17/18
CPCE21D11/00E21D11/10E21F17/18
Inventor 刘畅孙永新赵会波姜鹏飞王子越韦尧中郭吉昌罗超曹晓明陈志良祝凌甫伊丙鼎孙晓冬
Owner CCTEG COAL MINING RES INST
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