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Method for constructing underground coal mine chamber of large cross section

A construction method and large-section technology, applied in mining equipment, earthwork drilling, blasting, etc., can solve problems such as low efficiency, achieve the effects of reducing labor intensity, ensuring support safety, and improving work efficiency

Active Publication Date: 2010-06-02
SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD +1
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Problems solved by technology

[0003] In order to solve the problem of low efficiency of the existing coal mine large-section chamber blasting construction method, the present invention provides a coal mine large-section chamber construction method

Method used

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  • Method for constructing underground coal mine chamber of large cross section

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Embodiment Construction

[0011] Take the Sihe Mine in Jincheng, Shanxi as an example. As a high-gas mine, the Sihe Mine has successively built two chambers for gas drainage pumping stations. meters, with a sectional area of ​​68M2. Net section: 7.5 meters wide, 8.5 meters high, sectional area 61M2, design and construction length 62 meters. The construction method of the large-section chamber in the coal mine is realized by using the following construction method: a. The chamber is selected in the area where the upper layer is gangue layer 1 and the lower layer is coal seam 2; b. The upper layer adopts blasting technology; c. The large gangue 3 produced in the end is crushed; d, the lower layer adopts a fully mechanized excavator 4 to cut coal, and the coal and the crushed gangue are discharged by the chute. The blasting process is specifically the process of drilling first and then blasting. The depth of the blasting holes is 1.6 meters (or 1.7 meters, or 1.8 meters). , 5 volumes of cutting holes, 4...

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Abstract

The invention relates to a method for constructing an underground coal mine chamber, in particular to a method for constructing an underground coal mine chamber of large cross section, aiming at solving the problem that the prior method for digging and blasting the underground coal mine chamber of large cross section has low efficiency. The method for constructing the underground coal mine chamber of large cross section comprises the following steps: a, selecting an area having gangue on the upper layer and coal on the lower layer to construct the underground coal mine chamber; b, digging and blasting the upper layer of the area; c, breaking the large gangue generated from digging and blasting the upper layer of the area into pieces; and d, cutting the coal in the lower layer of the area with a fully-mechanized coal winning machine and conveying the coal and the broken gangue out. The method for constructing the underground coal mine chamber of large cross section integrates the digging by blasting with the digging by the machine, omits the procedures of perforating the coal layer, blasting and the like, effectively increase the production efficiency, reduces the labor intensity of the worker, adopts the machine unit to cut the coal layer, causes less vibration to the coal side, obviously improves the forming and supporting effect and ensures the safety of supporting two sides of the high tunnel.

Description

technical field [0001] The invention relates to a construction method for a coal mine underground chamber, in particular to a construction method for a coal mine large-section underground chamber. Background technique [0002] In order to meet the needs of gas drainage in the East Fourth Panel of Jincheng Sihe Mine, a permanent gas drainage pumping station was selected and constructed near the bottom of Xiaodongshanfeng Mine to solve the problem of the long distance of the underground drainage pumping station of Dongfeng Mine. Insufficient negative pressure, so as to achieve the purpose of improving the negative pressure of the four-panel extraction, shortening the extraction time, and increasing the excavation footage. The Xiaodongshan Gas Drainage Pumping Station is a complex reconstruction project with 7 different roadway sections, the core part of which is the large-section chamber of the Drainage Pumping Station, which is a difficult point in construction. With the acc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/01E21D9/12F42D3/00
Inventor 徐玉胜薛军政赵彬秦天太成小勇刘军锋郑志军马飞
Owner SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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