Coal mine underground airbridge construction method

A construction method and wind bridge technology, applied in mine/tunnel ventilation, mining equipment, earthwork drilling and mining, etc., can solve problems such as low efficiency, large amount of engineering, long construction period, etc., and achieve high safety factor, low cost, The effect of short construction period

Active Publication Date: 2012-03-21
SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of low efficiency, large engineering quantity and long construction period of the exis

Method used

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  • Coal mine underground airbridge construction method
  • Coal mine underground airbridge construction method
  • Coal mine underground airbridge construction method

Examples

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Example Embodiment

[0019] Such as figure 1 As shown, the underground air bridge construction method in the coal mine, the return air roadway 2 is directly excavated along the roof of the coal seam by machine tunneling and intersects with the horizontal roadway 1, and then digs forward to the maintenance site, forming the entire roadway system, roadway 1 and return air The intersection of the roadway 2 is the wind bridge section, and then the blasting and roofing are carried out at the wind bridge section to form a wind bridge.

[0020] The wind bridge formed by the construction of the invention has a rectangular section, with a gross section of 12.22 square meters and a net section of 11.25 square meters. The roadway is supported by bolts, metal meshes and metal belts and reinforced with anchor cables.

[0021] The roof part of the roadway adopts Φ18mm, 2.0m long non-ribbed steel screw type resin bolt metal rod, model: MSGLW-400; the top bolt uses MSK2335 resin cartridge and MSZ2360 resin cartridge e...

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Abstract

The invention relates to a coal mining process, in particular to a coal mine underground airbridge construction method which solves the problems of low efficiency, large engineering quantity, long construction period and the like of the existing airbridge construction method. An air return roadway is tunneled directly along a roof of a coal bed by adopting a mechanical tunneling mode and is crossed with a horizontal roadway, and then is tunneled forward continuously to a horizontal plain so as to form a whole roadway system. An airbridge section is formed in the crossing position of the horizontal roadway and the air return roadway, and then the blasting, top brushing and building are conducted on the airbridge section so as to form an airbridge. Compared with the prior art, the coal mine underground airbridge construction method has the advantages that a semi coal rock roadway is tunneled directly to form the roadway, and then subjected to top brushing and building so as to form the airbridge. The construction is simple and easy, the workload is reduced, the cost is low, the construction period is short, and the safety coefficient is high. The work intensity of workers is reduced, the management of the roof is facilitated, the airbridge construction time is shortened, and the linkage arrangement of production groups is facilitated.

Description

technical field [0001] The invention relates to a coal mine mining technology, in particular to a construction method for an underground air bridge in a coal mine. Background technique [0002] Such as Figure 5 As shown, the roadway in a coal panel area of ​​our group mine is arranged in three lanes. During the coal mining process, the original wind bridge construction method is as follows: Image 6 As shown, the return air roadway in the coal panel area is excavated along the roof of the coal seam to 5 meters away from the Hengchuan mouth of the working face. °The rock roadway was excavated 52 meters down the slope, and the construction of the wind bridge was finally completed. [0003] The finally formed wind bridge has an arched section, with a gross section of 15.81㎡ and a net section of 17.37㎡. It is supported by anchor, mesh and spray joints. The support adopts Φ16mm, 1.6m-long twist-shaped resin anchor metal rod body. The model is: MSGM-235 , use one MSK3538 drug c...

Claims

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Application Information

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IPC IPC(8): E21F1/00E21D9/14
Inventor 李俊福晋新林李永斌张向阳杨成栋高贵君
Owner SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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