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Big underground chamber tunneling method

A chamber and reverse technology, which is applied in the direction of earthwork drilling, mining equipment, tunnels, etc., can solve problems such as difficulty in climbing ladders, difficulty in manual slag removal, and unsafety. The effect of sexual problems

Inactive Publication Date: 2010-04-28
CHINA HUAYE GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a new type of excavation method for large chambers, which solves the difficulty of exhausting smoke and the difficulty and unsafety of construction workers climbing up and down ladders. , the technical solution is specifically:

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Embodiment Construction

[0021] The specific construction steps of the invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] figure 1 It is the flow chart of the specific embodiment of this invention, and in a large amount of underground engineering practices, it is generally recognized that, tunnel and underground cavern engineering, its core problem, all boils down on the two key processes of excavation and support, namely How to excavate can be more conducive to the stability and support of the cave; if support is required, how to support can more effectively ensure the stability of the cave and facilitate excavation.

[0023] The above two factors determine that in the excavation construction of the chamber, it is necessary to adopt a corresponding construction method according to the characteristics of the chamber. In the embodiment, the large chamber described has a large span, a high height, and poor safety , if the whole s...

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Abstract

The invention relates to a big underground chamber tunneling method, comprising the following steps: 101.cross section is tunneled from the floor at one side along the setting slope until being tunneled to the top plate of the underground chamber; 102.top brushing at two sides is carried out after tunneling is carried out to the top plate, and the top part of a ramp road is knocked through at the same time; 104. after the cross sections are painted, the presetting length of the underground chamber is brushed by gradually brushing the cross sections from the top part along the reverse direction of the underground chamber; 105.after the vault is brushed, the top part of the underground chamber is supported; 106. after supporting is carried out, brushing is carried out from top to bottom in a step way, brushing is carried out while supporting is carried out in the construction, thereby finally achieving the scheduled design effect; in the method, as small cross section tunneling is adopted until to the top plate of the underground chamber, and then step construction method is carried out, so as to be capable of improving the construction condition remarkably.

Description

technical field [0001] The invention relates to a large chamber excavation method, which belongs to the field of mine underground construction. Background technique [0002] At present, large chambers are more and more widely used in mine underground and other fields of operation. Since most of the large chambers are constructed underground, they are often in complex geological conditions and are subject to natural geological conditions. Factors such as ground stress, geophysical parameters, groundwater, geological faults, and manual excavation operations. [0003] In addition, the large chambers of mines generally have large sections, some of which are relatively short in length, and require a long service life. Therefore, various difficulties are often encountered in the excavation construction of large chambers, and according to different According to the characteristics of the chamber, there are also different chamber tunneling construction methods. [0004] So far, mo...

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Application Information

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IPC IPC(8): E21D9/01
Inventor 刘东申李振峰刘国栋
Owner CHINA HUAYE GROUP
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