CN202745919U - Backward crossing shield type drainage system for mining face upper corner - Google Patents
Backward crossing shield type drainage system for mining face upper corner Download PDFInfo
- Publication number
- CN202745919U CN202745919U CN 201220285869 CN201220285869U CN202745919U CN 202745919 U CN202745919 U CN 202745919U CN 201220285869 CN201220285869 CN 201220285869 CN 201220285869 U CN201220285869 U CN 201220285869U CN 202745919 U CN202745919 U CN 202745919U
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- China
- Prior art keywords
- gas
- upper corner
- gas pipeline
- mining face
- threeway
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- 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.)
- Withdrawn - After Issue
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Abstract
The utility model provides a backward crossing shield type drainage system for a mining face upper corner. The drainage system comprises two gas pipelines, wherein the two gas pipelines are arranged along the area above the edge waist line of a mining face tunnel, one gas pipeline is used for draining the gas in the preset range of a goaf, the other gas pipeline is used for draining the gas absorbed into a wood plate die on the upper corner, each gas pipeline is alternatively provided with a plurality of tees, each tee is provided with a tee sealed disc, the tee sealed disc is provided with a plurality of threaded joints, each threaded joint is connected with a steel wire hose which is used for draining the gas on a leading upper corner, the two gas pipelines are connected with an drainage main pipe through control valves, and each threaded joint is also provided with a control valve. The backward crossing shield type drainage system for the mining face upper corner has the advantages that the gas on the mining face upper corner and the gas on the leading upper corner are effectively drained, the gas concentration in the tunnel air flow is reduced, and the gas safety of the mining face is ensured.
Description
Technical field
The utility model relates to the gas control technology field, relates in particular to a kind of face upper corner angle room for manoeuvre crossing screen formula extraction system.
Background technology
In process of coal mining; the protected seam work plane of down-hole can be protected the impact of the gas in layer goaf; cause the gas of part on the exploitation upper corner of work plane and the goaf thereof unusually to increase; especially when protected seam work plane initial mining and discharging; because goaf top plate fails in time to fall; so that the unsettled area in goaf is excessive; the gas that causes the goaf is along gushing out in 10 meters of face upper corner angle and the leading upper corners; this has brought hidden danger with regard to the safety of giving work plane, even causes gas accident.
In the prior art, mainly be methane gas extraction pipeline to be set to the goaf along roadway workface, directly lead to the goaf owing to the extraction pipeline in the method, therefore, can not fully effectively extraction to the gas of face upper corner angle and leading upper corner.
The utility model content
For the defects of prior art, the utility model provides a kind of face upper corner angle room for manoeuvre crossing screen formula extraction system.
The utility model provides a kind of face upper corner angle room for manoeuvre crossing screen formula extraction system, comprising:
Along two gas pipelines that are provided with more than the side stringcourse on the roadway workface, wherein a gas pipeline is for the gas in the preset range that extracts the goaf, and another gas pipeline is used for extracting upper corner and is incorporated as the interior gas of timber shuttering;
Be arranged at intervals with a plurality of threeways at each gas pipeline, be provided with the vexed dish of threeway in the described threeway, be provided with several screw thread heads on the vexed dish of described threeway, be connected with on the described screw thread head be used to the wired hose that extracts leading upper corner place gas;
Article two, gas pipeline is connected by by-pass valve control with the extraction main, also is provided with by-pass valve control on each screw thread head.
Described system, the caliber of two gas pipelines is identical.
Described system, the quantity of the screw thread head that arranges on the vexed dish of each threeway is 3 or 4; The caliber size of described wired hose is 2 cun.
Described system whenever 5 meters on each gas pipeline is arranged at intervals with a threeway.
The face upper corner angle room for manoeuvre crossing screen formula extraction system that the utility model provides can be effectively carries out extraction to the gas of face upper corner angle and leading upper corner, has reduced the gas density in the air flow in laneway, has guaranteed the gas safety of face.
Description of drawings
Fig. 1 is the face upper corner angle room for manoeuvre crossing screen formula extraction system architecture schematic diagram of the utility model embodiment.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is the face upper corner angle room for manoeuvre crossing screen formula extraction system architecture schematic diagram of the utility model embodiment, as shown in Figure 1, along being provided with the two-way gas pipeline more than the side stringcourse on work plane 303 tunnels, difference gas pipeline 103 and gas pipeline 104 as shown in FIG., article two, the caliber of gas pipeline is identical, wherein a gas pipeline is for the gas in the preset range that extracts goaf 301, another gas pipeline be used for to extract face upper corner angle and is incorporated as gas in the timber shuttering 302, and two gas pipelines are connected by by-pass valve control 102 with extraction main 101.
Whenever 5 meters on each gas pipeline, be arranged at intervals with a threeway 201, be provided with the vexed dish of threeway in the threeway 201, be provided with several screw thread heads 202 on the vexed dish of described threeway, the quantity of the screw thread head that arranges on the vexed dish of each threeway is 3 or 4, screw thread head 202 is used for connecting the wired hose 204 be used to extracting leading upper corner place gas, the caliber size of described wired hose and screw thread head is 2 cun, is provided with by-pass valve control 203 on the screw thread head 202.
The gas pumping method that the utility model provides comprises:
Intubate, an end that is specially wired hose 204 plugs on the screw thread head 202 of gas pipeline, and the other end is connected with treating extraction point;
Be interval with a plurality of threeways 201 on every gas pipeline, therefore can divide to pick out a lot of wired hoses 204, can set up a plurality of extraction negative pressure points separately in maneuverability ground, make the gas of gushing out obtain fully effectively extraction.
Pinch pipe, when moving after the back production of pipeline with work plane 303, in order to guarantee the continuity of gas pumping, a certain in two gas pipelines is removed, be specially in the given time one in two described gas pipelines is removed, and keep another normal extraction;
Gas pipeline can then move with the back production of work plane, has guaranteed to have all the time in two gas pipelines the gas in extraction goaf 301, and extraction face upper corner angle is incorporated as the gas in the plank 302.
Close a batch extraction, after being specially a end with described wired hose 204 and inserting the large position of leading upper corner gas, the other end of described wired hose is closed stubble with corresponding screw thread head 202, and gas pipeline 103 is connected with gas pipeline is connected with extraction main 101, carry out gas pumping.
The face upper corner angle room for manoeuvre crossing screen formula extraction system that the utility model provides, by laying two gas pipelines along work plane windward tunnel, and guarantee all the time an extraction in the goaf of described gas pipeline, the extraction in the timber shuttering that is incorporated as at face upper corner angle.Reserve a plurality of threeways on the described gas pipeline and process a plurality of screw thread heads at the vexed dish of described threeway, article two, all be provided with by-pass valve control on gas pipeline and the screw thread head, wired hose is connected to the screw thread head and treats between the extraction point, makes the gas of gushing out can obtain fully effectively extraction.The extraction system drops back with the passing of work plane, and has guaranteed continuity, reliability and the stability of extraction.
Based on above-mentioned, the face upper corner angle room for manoeuvre crossing screen formula extraction system that the utility model provides can be effectively carries out extraction to the gas of face upper corner angle and leading upper corner, reduce the gas density in the air flow in laneway, guaranteed the gas safety of face.
It should be noted that at last: above each embodiment is not intended to limit only in order to the technical solution of the utility model to be described; Although with reference to aforementioned each embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of each embodiment technical scheme of the utility model.
Claims (4)
1. a face upper corner angle room for manoeuvre crossing screen formula extraction system is characterized in that, comprising:
Along two gas pipelines that are provided with more than the side stringcourse on the roadway workface, wherein a gas pipeline is for the gas in the preset range that extracts the goaf, and another gas pipeline is used for extracting upper corner and is incorporated as the interior gas of timber shuttering;
Be arranged at intervals with a plurality of threeways at each gas pipeline, be provided with the vexed dish of threeway in the described threeway, be provided with several screw thread heads on the vexed dish of described threeway, be connected with on the described screw thread head be used to the wired hose that extracts leading upper corner place gas;
Article two, gas pipeline is connected by by-pass valve control with the extraction main, also is provided with by-pass valve control on each screw thread head.
2. system according to claim 1 is characterized in that, the caliber of two gas pipelines is identical.
3. system according to claim 1 and 2 is characterized in that, the quantity of the screw thread head that arranges on the vexed dish of each threeway is 3 or 4; The caliber size of described wired hose is 2 cun.
4. system according to claim 1 and 2 is characterized in that, whenever 5 meters on each gas pipeline is arranged at intervals with a threeway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220285869 CN202745919U (en) | 2012-06-18 | 2012-06-18 | Backward crossing shield type drainage system for mining face upper corner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220285869 CN202745919U (en) | 2012-06-18 | 2012-06-18 | Backward crossing shield type drainage system for mining face upper corner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202745919U true CN202745919U (en) | 2013-02-20 |
Family
ID=47705334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220285869 Withdrawn - After Issue CN202745919U (en) | 2012-06-18 | 2012-06-18 | Backward crossing shield type drainage system for mining face upper corner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202745919U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877880A (en) * | 2012-06-18 | 2013-01-16 | 淮南矿业(集团)有限责任公司 | Setback crossed shield extraction system on upper corner of working face and extraction method |
| CN104100291A (en) * | 2014-07-25 | 2014-10-15 | 太原理工大学 | Gob gas extraction device and method |
| CN106979030A (en) * | 2017-04-07 | 2017-07-25 | 煤科集团沈阳研究院有限公司 | A kind of variable load extraction pipeline and pumping method based on catalyzing denaturing principle |
-
2012
- 2012-06-18 CN CN 201220285869 patent/CN202745919U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877880A (en) * | 2012-06-18 | 2013-01-16 | 淮南矿业(集团)有限责任公司 | Setback crossed shield extraction system on upper corner of working face and extraction method |
| CN102877880B (en) * | 2012-06-18 | 2015-04-29 | 淮南矿业(集团)有限责任公司 | Setback crossed shield extraction system on upper corner of working face and extraction method |
| CN104100291A (en) * | 2014-07-25 | 2014-10-15 | 太原理工大学 | Gob gas extraction device and method |
| CN106979030A (en) * | 2017-04-07 | 2017-07-25 | 煤科集团沈阳研究院有限公司 | A kind of variable load extraction pipeline and pumping method based on catalyzing denaturing principle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130220 Effective date of abandoning: 20150429 |