Method for arranging gas extraction drill hole in deep-buried water-containing coal seam
A technology for coal seam gas extraction and drilling, which is applied in gas discharge, mining fluid, safety devices, etc., can solve problems such as unsatisfactory gas control effect, reduce the number of drilling and sealing holes, reduce the risk of hole collapse, and solve the problem of The effect of gas overrun
Inactive Publication Date: 2018-10-09
LIAONING TECHNICAL UNIVERSITY
View PDF11 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In recent years, coal mines often use the same gas drainage methods for deep buried high water content coal seams as the same gas control methods for shallow buried low water content coal seams, which makes the gas control effect not ideal
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
[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0029] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.
[0030] In addition, the ...
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 method for arranging a gas extraction drill hole in a deep-buried water-containing coal seam. The method comprises the following steps that 1, a drilling site is arranged ona working area between an air inlet lane and an air return lane in the axial direction of the working area; 2, the drilling site is supported; 3, the gas extraction drill hole is constructed in the coal seam of the drilling site, and the gas extraction drill hole comprises a main hole channel and a plurality of branch hole channels distributed on both sides of the main hole channel; 4, the wholemain hole channel is laid with antistatic flame retardant polyethylene pipes with sieve openings; and 5, the main hole channel is sealed, and the main hole channel is connected to a gas extraction system. The location and trajectory of the drill hole are limited, the influences of deep-buried water-containing coal seam drill hole surrounding rock stress and coal seam water are fully considered, the number of drill hole sealing and the danger of hole collapse are reduced, the efficiency of gas extraction is improved, the mine gas emission is reduced, and the problem of gas transfinite during working face recovery is solved.
Description
Technical field: [0001] The invention relates to the technical field of mine gas control and utilization, in particular to a method for arranging boreholes for gas drainage in deeply buried water-bearing coal seams. Background technique: [0002] Coal seam gas is a double-edged sword. On the one hand, it can bring safety hazards to coal production, and on the other hand, it is also a clean energy. If the efficient development and utilization of coal seam gas can not only alleviate the energy pressure to a certain extent, but also have great significance for environmental protection and safe production of coal enterprises. [0003] With the continuous deepening of coal mining depth, the coal structure, drilling surrounding rock stress and gas extraction environment tend to be more complex, the cost of using ground drilling for gas extraction is getting higher and higher, and the danger of drilling hole collapse in underground gas drainage Keep increasing. Water accumulated ...
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 Applications(China)
IPC IPC(8): E21B43/00E21B43/30E21F7/00
CPCE21B43/006E21B43/30E21F7/00
Inventor 王雪峰褚歌邓存宝凡永鹏方博郭晓阳王娟
Owner LIAONING TECHNICAL UNIVERSITY