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Safe and fast driving method for large-section open-off cut time-by-time tunneling

A large-section, roadway-forming technology, which is applied in ground mining, earthwork drilling, underground mining, etc., can solve the problems of low efficiency and achieve the effects of increasing the operating rate, saving recovery time, and reducing labor intensity

Inactive Publication Date: 2012-06-20
SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem of low efficiency existing in the existing large-section cutout construction, the present invention provides a safe and rapid excavation method for large-section cutouts in stages

Method used

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  • Safe and fast driving method for large-section open-off cut time-by-time tunneling
  • Safe and fast driving method for large-section open-off cut time-by-time tunneling
  • Safe and fast driving method for large-section open-off cut time-by-time tunneling

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Embodiment Construction

[0020] Such as figure 2 As shown in Fig.

[0021] In a coal mining area, the design working face 5 is 180 meters long. The right side of the working face 5 is the air inlet lane, and the left side is the return air lane 8 which is under design but not excavated. One side of the air inlet lane 1 begins to excavate along the cut-out guide tunnel 4, which is 4.0 meters wide. At the same time, follow up the laying track and slide 3 to transport the coal out. After the cut-out guide tunnel 4 is dug in place , to the larger side of the cutting hole to be constructed at the grinding angle 7, the coal cutter 6 turns at the grinding angle 7 and adjusts the machine to cut coal at 90 degrees so that the tunneling unit enters the return airway at position 8, and adjusts the machine again to cut at 90 degrees Coal makes the unit enter the left end of the large side 2 of the eye brush to be cut. The width of the large side 2 of the eye brush is 2.2 meters, and then start to excavate the l...

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Abstract

The invention relates to a coal mining method, in particular to a safe and fast driving method for large-section open-off cut time-by-time tunneling. The safe and fast driving method can solve the problem of low efficiency in existing large-section open-off cut construction and comprises the following steps: enabling a coal cutter to start to drive along an open-off cut pilot tunnel from one side of a wind inlet lane of a designed working face, simultaneously laying tracks and a scraper-trough conveyer for transporting out coal cinders, grinding an angle on one side of open-off cut enlargement (the expanded side) to be constructed after the open-off cut pilot tunnel is driven in place, enabling the coal cutter to turn and adjust the machine with 90 degrees for cutting coal in the angle grinding position so as to enable a coal cutter unit to enter into a wind return lane, further adjust the machine with 90 degrees for cutting the coal so as to enable the unit to enter into the side end to be enlarged, then starting to drive the open-off cut enlargement side, transporting out the coal cut during the driving process by utilizing the well laid scraper-trough conveyer, and merging the open-off cut enlargement side with the open-off cut pilot tunnel for performing open-off cut on the working face after the end of driving of the open-off cut enlargement side.

Description

technical field [0001] The invention relates to a coal mining method, in particular to a safe and rapid excavation method for large-section incisions into lanes in stages. Background technique [0002] The construction method of the large section (150-200 meters) of the Gushuyuan Mine of Shanxi Coal Group is as follows: figure 1 As shown, the left side of the working face is the designed air return lane (unconstructed), and the right side is the air inlet lane (constructed). The fully mechanized excavator enters from the pre-excavated gap on the right side of the designed cutout position, and then excavates At the same time, the track and the slide are laid correspondingly during the excavation. After the excavation reaches the position to form a guide tunnel, then start to reverse the original road to the starting point, then remove the slide and track, and then open the gap on the brush side, and then put the fully mechanized excavator into the gap Start the excavation co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/16
Inventor 晋新林李永斌李俊福张向阳杨成栋高贵君
Owner SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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