Construction method for high face mining support removing passage under complicated geological condition

A construction method and working face technology, which are applied in mining equipment, earthwork drilling, pillars/supports, etc., can solve the problem that the withdrawal channel cannot be recovered and operated and connected, so as to reduce the recovery and withdrawal speed, select appropriate models, and reduce the effect of length

Inactive Publication Date: 2012-01-11
SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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Problems solved by technology

[0005] In order to solve the problem that the unloading channel constructed in advance cannot be completely connected with the mining operation in the coal mine underground mining project wi

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  • Construction method for high face mining support removing passage under complicated geological condition
  • Construction method for high face mining support removing passage under complicated geological condition
  • Construction method for high face mining support removing passage under complicated geological condition

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[0029] A construction method for the instant withdrawal channel used in the 6.2-meter mining height working face with complex geological conditions, the steps include:

[0030] 1. Preparatory work before construction of the withdrawal channel, such as figure 1 As shown, in the final mining stage, in the previous cycle of the fixed frame, the top slab is supported by the locking anchor cable 3 between the hydraulic frame 5, and the top beam telescopic beam is extended before the anchoring cable, and the first and second side protection boards are played out in time. 2 Carry out the protection and set up the work platform manually. After the support is positioned, the bottom plate is required to be flat, and the floating coal is cleaned, the protection board is punched out, and 2 single columns are supported under the top beam of each support. 4 Increase the support for the roof . Such as Figure 8 As shown in the figure, in the case of a piece of fender, when the fender 2 is unabl...

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Abstract

The invention relates to a construction method for a coal mine roadway, in particular to a construction method for a high face mining support removing passage under the complicated geological condition of 6.2m, which solves the problem that in the coal mine underground mining process, a support removing passage constructed in advance can not realize the complete butt joint with the mining operation. The construction method comprises the steps that: (1) the preparation work before support removing passage construction is carried out, at the last mining stage, counterbored anchor support and protection top plates are arranged among hydraulic support frames, and a monomer column is supported and arranged under each support frame top beam for enhancing the support force the top plates; (2) during the construction for the upper passage constructed by blasting driving, the separately layered or stepped blasting driving on coal bodies is adopted, and then, the manual coal cleaning is carried out; and (3) the lower passage is constructed, and the support and protection is carried out. The coal mine roadway construction method has the advantages that when the actual geological condition of the coal mining work surface has great deviation with the predicted geological condition, for example, the complicated geological conditions in special construction such as faultage and the like occur, the normal mining can not be carried out, and the temporary moving is really needed, the technology of the construction method for the coal mine roadway can be directly used for constructing support removing passages.

Description

[0001] technical field [0002] The invention relates to a construction method of a coal mine roadway, in particular to a construction method for a detaching channel of a working face with a large mining height under complex geological conditions. Background technique [0003] After the completion of the construction of the originally designed dismantling channel of the large mining height working face numbered 3306 in our mine, a fault with a drop of 2 to 3.3 meters was exposed in the channel. According to the analysis and prediction of the geological structure, this fault is from the dismantling channel to the inside. The impact along the direction of the working face is about 180 meters. According to the experience of the working face No. 3305 passing through the fault, when the fault affects a large area, the exposed area of ​​the mining gangue area of ​​the working face is relatively large, and mining is difficult. There are many drilling and blasting processes in the w...

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Application Information

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IPC IPC(8): E21D20/00E21D15/60
Inventor 苏清政赵建国王江峰宋斌赵建民张占杰张明延志军王联民郜建明张文根李劲松姚富强都海龙孙龙尚玮炜
Owner SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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