CN210239726U - E-shaped ventilation system of fully-mechanized coal mining forward-drawing working face - Google Patents
E-shaped ventilation system of fully-mechanized coal mining forward-drawing working face Download PDFInfo
- Publication number
- CN210239726U CN210239726U CN201921099260.3U CN201921099260U CN210239726U CN 210239726 U CN210239726 U CN 210239726U CN 201921099260 U CN201921099260 U CN 201921099260U CN 210239726 U CN210239726 U CN 210239726U
- Authority
- CN
- China
- Prior art keywords
- lane
- air
- mining area
- return
- air inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a fully mechanized mining is in same direction as drawing working face E shape ventilation system, including mining area air intake lane, mining area return airway, mining area contact lane, air inlet crossheading, return air crossheading and middle lane, mining area air intake lane and mining area return airway parallel arrangement, mining area air intake lane, mining area contact lane and mining area return airway are consecutive to communicate with each other. The air inlet crossheading, the air return crossheading and the middle lane are all positioned on one side of the air inlet lane of the mining area, which is deviated from the air return lane of the mining area, and the middle lane is positioned between the air inlet crossheading and the air return crossheading. One end of the air inlet crossheading and the middle lane is communicated with the air inlet lane of the mining area, and the other end of the air inlet crossheading and the middle lane is communicated with the stope face. One end of the return air gateway is communicated with the stope face, and the other end of the return air gateway is communicated with the return air roadway of the mining area. The utility model discloses a "two advance one time" ventilation structure, the supplementary air inlet of middle lane dilutes the harmful gas of stope face, increases the amount of wind, improves the wind speed, and the lowering temperature has reduced the coal loss, improves the coal rate of recovery.
Description
Technical Field
The utility model relates to a mine ventilation technical field, concretely relates to combine and adopt in same direction as drawing working face E shape ventilation system.
Background
The ventilation system of the coal face is an important component of the ventilation system of a mine, and the comprehensive mechanized coal mining degree is higher and higher along with the continuous development of the modernization technology of the coal mine. The length of the comprehensive mechanical coal mining working face is generally 150-220 m, if the length of the working face can reach 250-300 m under the permission of mining technical conditions, the length of each working face is kept as consistent as possible. The length of a common mechanized coal mining working face is preferably 120-160 m, and the total length of a counter-pulling or forward-pulling working face is 200-300 m. The reasonable ventilation system of the coal face is designed, so that the working load of mine tunneling can be reduced, the situation of mine connection tension is relieved, high-yield and high-efficiency working face is realized, and the economic benefit is improved.
The roadway layout of the coal face and the selection of the ventilation system directly influence the mining continuation and the gas prevention and control work of the mine. At present, the main forms of ventilation systems adopted by coal mines are as follows: u-shaped, Y-shaped, Z-shaped, H-shaped, W-shaped, double U-shaped and other ventilation systems. For a longer coal face, gas is easy to accumulate at the upper corner of the U-shaped ventilation system, and the temperature of the upper rear half face of the working face flushed by airflow is higher. Three crossroads need to be tunneled in the W-shaped ventilation system, a 'one-in-two-return' or 'two-in-one-return' ventilation system is adopted, air is distributed on the working face according to two independent working faces, the air quantity requirement is large, and the air quantity balance of the two working faces is relatively difficult to adjust. Four tunnels need to be tunneled on the coal face of the double-U-shaped ventilation system, the tunneling and maintenance workload is large, the tunneling continuity is affected, a coal pillar is reserved in the middle of the tunnels, resource waste is caused, the air quantity demand is calculated according to two working faces, and the air quantity demand is large. Therefore, further improvements are needed in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to the not enough of above-mentioned prior art, the utility model aims to provide a combine to adopt in same direction as drawing working face E shape ventilation system, the working face of solving current ventilation system needs independent air distribution, and amount of wind demand is great, adjusts two working faces balanced relative difficulties of amount of wind, problem that the coal rate of recovery is low.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
a fully-mechanized coal mining forward-pulling working face E-shaped ventilation system comprises a mining area air inlet roadway, a mining area air return roadway, a mining area connecting roadway, an air inlet crossheading, a return air crossheading and an intermediate roadway, wherein the mining area air inlet roadway and the mining area air return roadway are arranged in parallel, and the mining area air inlet roadway, the mining area connecting roadway and the mining area air return roadway are sequentially connected and communicated end to end. The air inlet crossheading, the air return crossheading and the middle lane are all positioned on one side of the air inlet lane of the mining area, which is deviated from the air return lane of the mining area, and the middle lane is positioned between the air inlet crossheading and the air return crossheading. One end of the air inlet crossheading and the middle lane is communicated with the air inlet lane of the mining area, and the other end of the air inlet crossheading and the middle lane is communicated with the stope face. One end of the return air gateway is communicated with the stope face, and the other end of the return air gateway is communicated with the return air roadway of the mining area.
Preferably, the air inlet crossheading, the air return crossheading and the middle roadway are parallel to each other and perpendicular to the air inlet roadway of the mining area, and the air return crossheading, the middle roadway and the air inlet crossheading are sequentially arranged at intervals along the flowing direction of air in the air inlet roadway of the mining area.
Preferably, a first damper is arranged inside the mining area connecting lane, and a second damper is arranged inside the middle lane.
Preferably, the inside of return air cistron is equipped with the regulation wind window.
Preferably, the mining area air inlet lane and the return air gateway are communicated through an inclined lane, a third air adjusting door is arranged in the inclined lane, and the air adjusting window is positioned between the joint of the inclined lane and the return air gateway and the joint of the mining area air return lane and the return air gateway.
By adopting the technical scheme, the utility model discloses a beneficial technological effect is:
1. three crossroads are arranged on the working face, a 'two-in one-back' ventilation system is adopted, when the air quantity required by the coal face is calculated, calculation is carried out according to a long working face, air is assisted in a middle lane, and the air quantity distribution of the coal face is saved.
2. The working face adopts a 'two-in one-back' ventilation system, and the auxiliary air inlet of the middle lane can dilute the harmful gas of the air flow on the stope face, increase the air quantity of the working face, improve the air speed of the working face and reduce the temperature of the working face.
The 3 three crossroads correspond to the two stope faces, so that the tunneling engineering amount can be reduced, the maintenance cost of a roadway is saved, the situation of mine connection shortage is relieved, and the production capacity and the stope efficiency of the working faces are improved.
4. Two stope faces are arranged by the three crossheading, and a protective coal pillar is not reserved between the two stope faces, so that the stope face stopable reserve is increased from the aspect of design, the coal loss is reduced, and the coal recovery rate is improved.
5. The installation and the withdrawal of the two stope faces can be completed at one time, and the procedures of installation and withdrawal at one time are reduced compared with the procedure of respectively arranging the two stope faces, so that the production flow is simplified, and the installation period is shortened.
Drawings
Fig. 1 is a schematic structural principle diagram of an E-shaped ventilation system of a fully mechanized coal mining face.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
with reference to fig. 1, the fully-mechanized coal mining downdraft working face E-shaped ventilation system comprises a mining area air inlet lane 1, a mining area air return lane 2, a mining area connection lane 3, an air inlet gateway 4, an air return gateway 6 and a middle lane 5, wherein the mining area air inlet lane 1 and the mining area air return lane 2 are arranged in parallel, the mining area connection lane 3 is located between the mining area air inlet lane 1 and the mining area air return lane 2, the mining area air inlet lane 1, the mining area connection lane 3 and the mining area air return lane 2 are sequentially communicated end to end, specifically, the outlet end of the mining area air inlet lane 1 is communicated with the inlet end of the mining area connection lane 3, and the outlet end of the mining area connection lane 3 is communicated with the inlet end of the mining area air return lane 2. In a working state, wind enters the mining area air inlet lane 1 from the inlet end of the mining area air inlet lane 1, circulates to the mining area connecting lane 3 along the mining area air inlet lane 1, enters the mining area air return lane 2 through the mining area connecting lane 3, and is discharged from the outlet end of the mining area air return lane 2.
The air inlet crossheading 4, the air return crossheading 6 and the middle lane 5 are all positioned at one side of the mining area air inlet lane 1, which is far away from the mining area air return lane 2, and the air inlet crossheading 4, the air return crossheading 6 and the middle lane 5 are all channels dug in a working face 8, and can convey personnel and equipment and be used for ventilation. The air inlet crossheading 4, the air return crossheading 6 and the middle lane 5 are all parallel to each other and perpendicular to the mining area air inlet lane 1, the middle lane 5 is a crossheading for assisting air inlet, three crossheadings divide the whole stope 7 into two parts, one part of the two parts is positioned between the air inlet crossheading 4 and the middle lane 5, the other part of the two parts is positioned between the middle lane 5 and the air return crossheading 6, the three crossheadings, the mining area air inlet lane 1 and the mining area air return lane 2 form an E-shaped underground ventilation system, according to the air volume calculation of the working surface, the air inlet volume of the air inlet crossheading 4 is 70% of the air volume required by the working surface, and the air inlet volume of the middle lane 5 is 30% of the air volume required by the working surface. The middle lane 5 is positioned between the air inlet gateway 4 and the air return gateway 6, the middle lane 5 and the air inlet gateway 4 are sequentially arranged at intervals along the circulation direction of the air in the air inlet lane 1 of the mining area.
One end of the air inlet crossheading 4 and one end of the middle lane 5 are communicated with the air inlet lane 1 of the mining area, and the other end of the air inlet crossheading 4 and the other end of the middle lane 5 are communicated with the stope face 7. Wind enters the air intake roadway 1 of the mining area from the inlet end of the air intake roadway 1 of the mining area, respectively enters the stope face 7 from the middle roadway 5 and the air intake gateway 4, fresh wind flow enters and washes the stope face 7 on one side from the air intake gateway 4, the middle roadway 5 assists in air intake, the wind flow washing the stope face 7 is mixed with partial fresh wind flow, and the stope face 7 on the other side is washed. One end of the return air gateway 6 is communicated with a stope face 7, the other end of the return air gateway is communicated with the stope return air lane 2, and ventilation air of the stope face 7 enters the return air gateway 6, is converged into the stope return air lane 2 through the return air gateway 6 and is discharged from the outlet end of the stope return air lane 2.
The mining area connecting lane 3 is internally provided with a first damper 31, and the middle lane 5 is internally provided with a second damper 51. The air intake of the stope face 7 is controlled through a first air damper 31, the air volume required by the stope face 7 is obtained by calculating the length of the stope face 7, redundant air can enter the stope return airway 2 through the stope connecting airway 3, the first air damper 31 is used for controlling the air volume passing through the stope connecting airway 3, namely the air volume of the stope inlet airway 1 is equal to the sum of the air volume of the air inlet gateway 4, the air volume of the middle airway 5 and the air volume of the stope connecting airway 3, and the sum of the air volume of the air inlet gateway 4 and the air volume of the middle airway 5 is equal to the air volume required by the stope face 7. The air inlet crossheading 4 is used as a main air inlet channel of the stope working face 7, and the middle lane 5 is used as an auxiliary air inlet channel of the stope working face 7.
During the production of the working face 8, the air volume of the middle lane 5 is adjusted through the second air adjusting door 51, the air inlet volume of the middle lane 5 is reasonably adjusted and controlled, the air volume of the middle lane 5 is allocated according to the lowest wind speed of the lane, and the air volume can be properly increased according to the 7-gas emission situation and the temperature change situation of the stope working face. The fresh air flow entering the middle lane 5 is mixed with the air flow of the stope face, the air quantity of the stope face is increased, the air speed of the stope face is increased, the temperature of the face is reduced, and the current operation environment is improved. The mining area air inlet lane 1 and the return air gateway 6 are communicated through an inclined lane 9, a third air adjusting door 91 is arranged in the inclined lane 9, the mining area air inlet lane 1 can enter the return air gateway 6 through the inclined lane 9 and reach the stope face 7, the distance from the mining area air inlet lane 1 to the stope face 7 is reduced, and equipment transportation and personnel passing are facilitated.
The crossheading on one side of the working face 8 is an air inlet crossheading 4, ventilation facilities built in the middle lane 5 regulate air volume to assist air inlet, the crossheading on the other side is a return air crossheading 6 to form a 'two-in-one-return' ventilation system, a regulating air window 61 is arranged in the return air crossheading 6, the regulating air window 61 is positioned between the joint of the inclined lane 9 and the return air crossheading 6 and the joint of the mining area return air lane 2 and the return air crossheading 6, the regulating air window 61 regulates the return air volume of the working face 8 and is matched with the first regulating air door 31 and the second regulating air door 51, the air volume of the mining working face 7 is ensured to meet production requirements, and the working face 8 is ensured to be stable and reliable.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.
Claims (5)
1. A fully-mechanized coal mining downdraft working face E-shaped ventilation system comprises a mining area air inlet lane, a mining area air return lane, a mining area connection lane, an air inlet crossheading, an air return crossheading and an intermediate lane, and is characterized in that the mining area air inlet lane and the mining area air return lane are arranged in parallel, and the mining area air inlet lane, the mining area connection lane and the mining area air return lane are sequentially connected and communicated end to end; the air inlet gateway, the air return gateway and the middle lane are all positioned on one side of the mining area air inlet lane, which is far away from the mining area air return lane, and the middle lane is positioned between the air inlet gateway and the air return gateway; one end of the air inlet crossheading and the middle lane is communicated with the air inlet lane of the mining area, and the other end of the air inlet crossheading and the middle lane is communicated with the stope face; one end of the return air gateway is communicated with the stope face, and the other end of the return air gateway is communicated with the return air roadway of the mining area.
2. The fully mechanized coal mining face E-shaped ventilation system according to claim 1, wherein the air intake gateway, the air return gateway and the middle lane are parallel to each other and perpendicular to the air intake lane of the mining area, and the air return gateway, the middle lane and the air intake gateway are sequentially arranged at intervals along the circulation direction of the wind in the air intake lane of the mining area.
3. The fully mechanized coal mining face E-shaped ventilation system according to claim 1, wherein a first damper is arranged inside the mining area connecting roadway, and a second damper is arranged inside the middle roadway.
4. The fully-mechanized coal mining face E-shaped ventilation system according to claim 1, wherein the return air gateway is internally provided with a regulating air window.
5. The fully-mechanized coal mining face E-shaped ventilation system according to claim 4, wherein the mining area air inlet lane and the return air gateway are communicated through an inclined lane, a third damper is arranged in the inclined lane, and the damper window is positioned between the connection position of the inclined lane and the return air gateway and the connection position of the mining area air return lane and the return air gateway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921099260.3U CN210239726U (en) | 2019-07-15 | 2019-07-15 | E-shaped ventilation system of fully-mechanized coal mining forward-drawing working face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921099260.3U CN210239726U (en) | 2019-07-15 | 2019-07-15 | E-shaped ventilation system of fully-mechanized coal mining forward-drawing working face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210239726U true CN210239726U (en) | 2020-04-03 |
Family
ID=69991073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921099260.3U Active CN210239726U (en) | 2019-07-15 | 2019-07-15 | E-shaped ventilation system of fully-mechanized coal mining forward-drawing working face |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210239726U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456794A (en) * | 2020-04-20 | 2020-07-28 | 北京中矿创新联盟能源环境科学研究院 | Ventilation method for coal mining area |
| CN111456742A (en) * | 2020-04-20 | 2020-07-28 | 北京中矿创新联盟能源环境科学研究院 | High-grade common mining opposite-drawing working face roadway of thin coal seam and forming method thereof |
| CN112922657A (en) * | 2021-01-19 | 2021-06-08 | 库车县科兴煤炭实业有限责任公司 | 110-construction-method roof-cutting pressure-relief roadway-forming U-shaped to W-shaped ventilation method |
| CN115075864A (en) * | 2022-06-24 | 2022-09-20 | 长沙矿山研究院有限责任公司 | Controllable series ventilation and intelligent monitoring alarm system thereof |
-
2019
- 2019-07-15 CN CN201921099260.3U patent/CN210239726U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456794A (en) * | 2020-04-20 | 2020-07-28 | 北京中矿创新联盟能源环境科学研究院 | Ventilation method for coal mining area |
| CN111456742A (en) * | 2020-04-20 | 2020-07-28 | 北京中矿创新联盟能源环境科学研究院 | High-grade common mining opposite-drawing working face roadway of thin coal seam and forming method thereof |
| CN111456794B (en) * | 2020-04-20 | 2020-12-18 | 北京中矿创新联盟能源环境科学研究院 | Ventilation method for coal mining area |
| CN111456742B (en) * | 2020-04-20 | 2020-12-25 | 北京中矿创新联盟能源环境科学研究院 | High-grade common mining opposite-drawing working face roadway of thin coal seam and forming method thereof |
| CN112922657A (en) * | 2021-01-19 | 2021-06-08 | 库车县科兴煤炭实业有限责任公司 | 110-construction-method roof-cutting pressure-relief roadway-forming U-shaped to W-shaped ventilation method |
| CN115075864A (en) * | 2022-06-24 | 2022-09-20 | 长沙矿山研究院有限责任公司 | Controllable series ventilation and intelligent monitoring alarm system thereof |
| CN115075864B (en) * | 2022-06-24 | 2023-10-24 | 长沙矿山研究院有限责任公司 | Controllable series ventilation and intelligent monitoring alarm system thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210239726U (en) | E-shaped ventilation system of fully-mechanized coal mining forward-drawing working face | |
| CN207420614U (en) | A kind of working face in the pit dash system | |
| CN111622795B (en) | Three-dimensional ventilation method and system for mining by 110-method coal and gas outburst mine | |
| CN102226413A (en) | Gas extraction method of cross hole drilling area of gas discharge laneway | |
| CN201723246U (en) | Ventilating structure for pumping and exhausting gas at coal face | |
| CN101749018A (en) | Coal mining method with direct coal pillar recovery | |
| CN104196554A (en) | U-U-type ventilation method and system for coalfaces | |
| CN102182460A (en) | High-gas multi-roadway no-coal-pillar mining method | |
| CN110700831A (en) | Coal mine production system under intelligent mining condition | |
| CN102720518B (en) | Double-U ventilation system for fully-mechanized caving coal working face | |
| CN109252860B (en) | High-degree mechanical mining method for thin coal seam continuous mining machine | |
| CN111502729A (en) | Assembled special-shaped air duct for long-distance tunnel construction ventilation and construction method | |
| CN107829736A (en) | A kind of colliery Striping noise and filling displacement coal column method | |
| CN212225295U (en) | Assembled special-shaped air duct for long-distance tunnel construction ventilation | |
| CN100406676C (en) | Underground gasification production mine | |
| CN104975857A (en) | Full well work area section non-pillar goaf-side-drift-free coal mining method | |
| CN101769160A (en) | Y+auxiliary H-shaped ventilation system | |
| CN107725093A (en) | It is a kind of can rapid build local air return system | |
| CN109915198B (en) | Full-wind-pressure gas discharge method for advanced drilling of coal face | |
| CN209742942U (en) | Stage ventilation network for multi-layer parallel dense vein-shaped deposit mining | |
| CN109882230B (en) | Stage ventilation method and network for mining multilayer parallel dense vein-like ore deposit | |
| CN113944464B (en) | Coal mining method of corner coal full-negative-pressure continuous miner | |
| CN211115991U (en) | Coal mine production system under intelligent mining condition | |
| CN112030773B (en) | Construction method for bridging between open pit coal mine stope and refuse dump | |
| CN109538275A (en) | The forced ventilation method and ventilating system of a kind of longwall mining working face tail portion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |