Gas drainage method in gob of coal mine
A technology of gas drainage and goaf, which is applied in the direction of gas discharge, mining equipment, earthwork drilling, etc., can solve the problems of small drainage volume and low concentration of gas drainage technology, and improve the concentration of gas drainage As well as the amount of gas drainage, improving the safe working environment, and promoting the effect of construction
Active Publication Date: 2013-01-02
SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
View PDF1 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] In order to solve the problems of low drainage concentration and small drainage volume in existing goaf gas drainage technology, the present invention provides a method for gas drainage in coal mine goaf
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0009] The method of gas drainage in the goaf of a coal mine is realized by the following steps: (1) Select the drilling location according to the rock properties of the goaf; (3) After the construction, insert the casing into the hole; (4) Connect the casing to the vacuum pump, and use the vacuum pump for gas drainage; (5) Collect Gas extraction data for vacuum pumps.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a gas drainage technology, in particular to a gas drainage method in the gob of a coal mine, which is used for solving the problems of low drainage concentration and small drainage quantity of the existing gas drainage technology of the gob. The gas drainage method comprises the following steps: (1) selecting borehole positions according to the rock property of the gobs; (2) drilling holes on an arc roof of the gob by a three-section drilling mode after the borehole positions are selected; (3) inserting sleeves into the boreholes after the construction is finished; (4) connecting the sleeves with a vacuum pump and carrying out gas drainage by the vacuum pump; and (5) collecting gas drainage data of the vacuum pump. The gas drainage method can be used for effectively solving the problems of low drainage concentration and small drainage quantity of the existing gas drainage technology of the gob, thus being applicable to gas drainage in the gob during the back production of the coal mine.
Description
technical field [0001] The invention relates to gas drainage technology, in particular to a method for gas drainage in goafs of coal mines. Background technique [0002] When carrying out coal mine recovery, it is necessary to drain the gas from the mined-out area first; at present, the return air contacting Hengchuan intubation pipe is generally used to drain the gas in the mined-out area. Practice has shown that when using this drainage technology for gas drainage, The drainage concentration is low, the drainage volume is small, the gas concentration in the tail alley remains high, and the gas concentration is as high as 2.22%, which restricts the construction of a high-yield and efficient working face to a certain extent, and the daily advance rate of the working face is only 8 cycles; The tail roadway is affected by the secondary mining of the working face, the roadway deformation is serious, and the minimum section of the effective ventilation section is only 4m The t...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): E21F7/00
Inventor 王锁奎赵学斌宋军彭业晋刘运青张学亮张拴强赵亮张树岗
Owner SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD