CN105673013A - Exploiting method for working face to pass through cross and complex small coalpit tunnels - Google Patents
Exploiting method for working face to pass through cross and complex small coalpit tunnels Download PDFInfo
- Publication number
- CN105673013A CN105673013A CN201610030936.8A CN201610030936A CN105673013A CN 105673013 A CN105673013 A CN 105673013A CN 201610030936 A CN201610030936 A CN 201610030936A CN 105673013 A CN105673013 A CN 105673013A
- Authority
- CN
- China
- Prior art keywords
- working face
- coal mine
- small
- coalpit
- tail
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
Abstract
The invention discloses an exploiting method for a working face to pass through cross and complex small coalpit tunnels. An arrangement direction of the working face is adjusted manually according to the following steps: the arrangement direction is adjusted 30 meters away from the small coalpit, a tail propels in advance, the tail supports scraper conveyers, and a head does not support scraper conveyers; the head and the tail propel simultaneously, but the head propels in advance, so that the arrangement direction of the working face is changed again; when the small coalpit is nearly exposed during propelling, the working face is leveled, an expansion anchor pole is anchored to a coal wall. The method can effectively prevent generation of roof fall accidents near the small coalpit, so that production inconvenience due to working face coal wall caving is eliminated. Safety and high efficiency of production environment on the working face which passes through the small coalpit is guaranteed.
Description
Technical field
The present invention relates to the reoovery method of a kind of small coal mine, particularly relate to a kind of Coal Face Passing Through intersection complicated small coal mine tunnel extraction of root.
Background technology
At present, general when crossing small coal mine tunnel owing to working face oblique adjusting is apart from improper and ignore the factor such as mining height and fltting speed impact, often cause working face that clumb occurs near small coal mine, damage support. Meanwhile, the reinforcing dynamics of front rib is not enough, thus cause working face local wall caving serious, restriction safety in production.
Summary of the invention
It is an object of the invention to provide the high Coal Face Passing Through of a kind of efficiency height, security and intersect the complicated small coal mine tunnel extraction of root.
It is an object of the invention to be achieved through the following technical solutions:
The Coal Face Passing Through intersection complicated small coal mine tunnel extraction of root of the present invention, artificially adjusts working face arranged direction according to the following steps:
A, distance small coal mine 30m place start to adjust arranged direction, and tail advances in advance, tail many tops scraper conveyor, and head does not push up scraper conveyor;
B, head, tail advance simultaneously, but head place advances in advance, and working face arranged direction is changed again;
C, be advanced to fast disclose small coal mine time, working face is aligned, and beats expansion anchor rod to rib.
As seen from the above technical solution provided by the invention, the Coal Face Passing Through intersection complicated small coal mine tunnel extraction of root that the embodiment of the present invention provides, can effectively overcome the deficiency that prior art exists, significantly improve face roof condition, strengthen strength of coal wall. Effectively prevent the generation of roof fall accident near small coal mine, eliminate the inconvenience that working face wall wall caving is brought to production. Conscientiously safe and efficient through working surface production environment during small coal mine ensured.
Accompanying drawing explanation
The Coal Face Passing Through intersection complicated small coal mine tunnel distribution schematic diagram that Fig. 1 provides for the embodiment of the present invention.
Fig. 2 a to Fig. 2 c is the step schematic diagram crossing intersection face with complex small coal mine tunnel method in the embodiment of the present invention, and in figure, the direction of arrow is working face direction of propulsion.
Embodiment
The embodiment of the present invention will be described in further detail below.
The Coal Face Passing Through of the present invention intersects the complicated small coal mine tunnel extraction of root, its preferably embodiment be:
Artificially adjust working face arranged direction according to the following steps:
A, distance small coal mine 30m place start to adjust arranged direction, and tail advances in advance, tail many tops scraper conveyor, and head does not push up scraper conveyor;
B, head, tail advance simultaneously, but head place advances in advance, and working face arranged direction is changed again;
C, be advanced to fast disclose small coal mine time, working face is aligned, and beats expansion anchor rod to rib.
Mining height is reduced, with top coal cutting, if bracket base has absciss layer, then at base plate near small coal mine.
When disclosing the small coal mine being perpendicular to working face, at the advanced 1-2 cutter in the empty lane place of exposure, make working face protruding forward herein.
In described steps A, the advanced coal cutting one in return air lane segment distance, this distance is the half of the two lane discrepancy in elevation.
The Coal Face Passing Through intersection complicated small coal mine tunnel extraction of root of the present invention, it is possible to effectively overcome the deficiency that prior art exists, significantly improve face roof condition, strengthen strength of coal wall. Effectively prevent the generation of roof fall accident near small coal mine, eliminate the inconvenience that working face wall wall caving is brought to production. Conscientiously safe and efficient through working surface production environment during small coal mine ensured.
Specific embodiment:
As shown in Fig. 1 to Fig. 2 c, comprise step:
1. people is adjustment working face arranged direction:
1. being about 30m place apart from small coal mine to start to adjust arranged direction, tail advances in advance, and tail many tops scraper conveyor, head does not push up scraper conveyor.
2. head, tail advance simultaneously subsequently, but head place advances in advance, and working face arranged direction is changed again.
When being 3. advanced to fast exposure small coal mine, working face is aligned. And beat expansion anchor rod to rib.
2. suitably to be reduced mining height near small coal mine, with top coal cutting, if bracket base has absciss layer, it is possible at base plate.
3., when disclosing the small coal mine being perpendicular to working face, at the advanced 1-2 cutter in the empty lane place of exposure, make working face herein slightly toward front projection.
Concrete steps are:
As shown in Figure 2 a, distance small coal mine 30m place adjustment working face arranged direction: belt lane is higher than return air lane, and scraper conveyor is easily from head to tail landing, it is thus desirable to working face oblique adjusting, oblique adjusting is tail position, and the advanced coal cutting one in return air lane segment distance, this distance is generally the half of the two lane discrepancy in elevation.
In actual, see frame to, if scraper conveyor is still down altered, continue to advance forward. First from low lane, pass scraper conveyor. Beat anchor pole to the vertical blank lane place disclosed simultaneously.
Afterwards as shown in Figure 2 b to working face arrange carry out two times become to.
When disclosing soon, as shown in Figure 2 c, beat expansion anchor rod to rib, fixing broken coal.
Liquid fills mode: two rows, and the first row, faces upward 30 degree and connect top board and beat, spacing 1m; Second row, the vertical rib in middle part. Mainly beat to the place that rib is not broken.
The support caving shield that small coal mine tunnel is corresponding plays plank, plank specification 180 is thick × and 220 wide × 3000 are long
For the vertical operation Mian Kong lane disclosed, the advanced 1-2 cutter of exposure place to be made all the time. Little exploitation or high-grade conventional mining can be adopted when working face stenosis is narrow.
The above; it is only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, any it is familiar with those skilled in the art in the technical scope of present disclosure; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention. Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim book.
Claims (4)
1. a Coal Face Passing Through intersection complicated small coal mine tunnel extraction of root, it is characterised in that, artificially adjust working face arranged direction according to the following steps:
A, distance small coal mine 30m place start to adjust arranged direction, and tail advances in advance, tail many tops scraper conveyor, and head does not push up scraper conveyor;
B, head, tail advance simultaneously, but head place advances in advance, and working face arranged direction is changed again;
C, be advanced to fast disclose small coal mine time, working face is aligned, and beats expansion anchor rod to rib.
2. the Coal Face Passing Through according to claim 1 intersection complicated small coal mine tunnel extraction of root, it is characterised in that, near small coal mine, reduce mining height, with top coal cutting, if bracket base has absciss layer, then at base plate.
3. Coal Face Passing Through according to claim 2 intersects the complicated small coal mine tunnel extraction of root, it is characterised in that, when disclosing the small coal mine being perpendicular to working face, at the advanced 1-2 cutter in the empty lane place of exposure, make working face protruding forward herein.
4. Coal Face Passing Through according to claim 1,2 or 3 intersects the complicated small coal mine tunnel extraction of root, it is characterised in that, in described steps A, the advanced coal cutting one in return air lane segment distance, this distance is the half of the two lane discrepancy in elevation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610030936.8A CN105673013B (en) | 2016-01-18 | 2016-01-18 | Coal Face Passing Through intersects complicated small coal mine tunnel recovery method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610030936.8A CN105673013B (en) | 2016-01-18 | 2016-01-18 | Coal Face Passing Through intersects complicated small coal mine tunnel recovery method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105673013A true CN105673013A (en) | 2016-06-15 |
| CN105673013B CN105673013B (en) | 2018-04-06 |
Family
ID=56301372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610030936.8A Active CN105673013B (en) | 2016-01-18 | 2016-01-18 | Coal Face Passing Through intersects complicated small coal mine tunnel recovery method |
Country Status (1)
| Country | Link |
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| CN (1) | CN105673013B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236941A (en) * | 2020-02-19 | 2020-06-05 | 兖州煤业股份有限公司 | Method for fully mechanized mining face to pass through cross-layer roadway |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4265570A (en) * | 1979-06-01 | 1981-05-05 | Conoco, Inc. | Mine roof control |
| RU2057935C1 (en) * | 1993-02-03 | 1996-04-10 | Владимир Степанович Крылов | Process of development of gently dipping and inclined coal seams |
| CN102322261A (en) * | 2011-06-01 | 2012-01-18 | 山东科技大学 | Small coal pillar pressure-equalizing abandoned roadway passing method for large-mining height full-mechanized working faces |
| CN103696788A (en) * | 2013-12-17 | 2014-04-02 | 中国神华能源股份有限公司 | Abandoned roadway timbering device and construction method of fully mechanized coal mining face passed through abandoned roadway |
-
2016
- 2016-01-18 CN CN201610030936.8A patent/CN105673013B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4265570A (en) * | 1979-06-01 | 1981-05-05 | Conoco, Inc. | Mine roof control |
| RU2057935C1 (en) * | 1993-02-03 | 1996-04-10 | Владимир Степанович Крылов | Process of development of gently dipping and inclined coal seams |
| CN102322261A (en) * | 2011-06-01 | 2012-01-18 | 山东科技大学 | Small coal pillar pressure-equalizing abandoned roadway passing method for large-mining height full-mechanized working faces |
| CN103696788A (en) * | 2013-12-17 | 2014-04-02 | 中国神华能源股份有限公司 | Abandoned roadway timbering device and construction method of fully mechanized coal mining face passed through abandoned roadway |
Non-Patent Citations (1)
| Title |
|---|
| 神华集团: "《精细管理科学发展加快神华安全高效矿井建设—神华集团第三届矿长大会论文集技术篇》", 31 January 2011, 煤炭工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236941A (en) * | 2020-02-19 | 2020-06-05 | 兖州煤业股份有限公司 | Method for fully mechanized mining face to pass through cross-layer roadway |
| CN111236941B (en) * | 2020-02-19 | 2021-09-17 | 兖州煤业股份有限公司 | Method for fully mechanized mining face to pass through cross-layer roadway |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105673013B (en) | 2018-04-06 |
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