CN108343439A - Coal method is put in a kind of high-order presplitting layering of super high seam low level shake - Google Patents
Coal method is put in a kind of high-order presplitting layering of super high seam low level shake Download PDFInfo
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- CN108343439A CN108343439A CN201710038984.6A CN201710038984A CN108343439A CN 108343439 A CN108343439 A CN 108343439A CN 201710038984 A CN201710038984 A CN 201710038984A CN 108343439 A CN108343439 A CN 108343439A
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- 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
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
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Abstract
High-order presplitting layering is shaken the invention discloses a kind of super high seam low level and puts coal method, is belonged to mineral engineering field, is advanced optimized drawing coal technology, improves resource recovery.The invention is characterized in that：When balance arm is in low-end trim after putting coal in the process, shake action is executed, which exacerbates the disturbance of granular media coal cinder above rear balance arm, improve and put coal efficiency；When balance arm is in high-end trim afterwards, using the very heavy pressure of rear balance arm promote middle part top coal, in the top coal of top crack development, put coal work for next bit and efficiently put coal condition is provided；To ensure that top coal uniformly declines, 1#, 2# put coal work to each holder be performed both by same number put coal cycle, put coal cycle number according to top coal thickness determine.The present invention with it is existing put coal method compared with, have the characteristics that put that coal is efficient, resource recovery is high, percentage of shale content is small.
Description
Technical field
The present invention relates to one kind putting coal method, belongs to mineral engineering field, and specially a kind of super high seam low level shake is high-order
Coal method is put in presplitting layering.
Background technology
For the working face using the exploitation of mining technique, only top coal after hydraulic support above balance arm is abundant
It is broken, it could smoothly be released after becoming granular media, the development in crack is in the vertical direction for super high seam, in top coal
Have certain range, with the releasing of the broken coal body of top coal lower part, the crack of top coal middle and upper part is gradually developed, finished breaking at
For granular media, just has releasing condition.
The technology characteristics of mining exploitation determine that top coal loss is inevitable, without reasonably putting coal method
It is one of the principal element of top coal loss, therefore, selection reasonably puts coal method and puts coal efficiency and coal recovery rate for raising
It is of great significance.
Invention content
The purpose of the present invention is put coal efficiency and coal recovery rate for further increase super high seam top-coal caving face.
The present invention is achieved by the following technical solutions：Coal is put in a kind of high-order presplitting layering of super high seam low level shake
Method, working face share three and put coal work, and number is 1#, 2#, 3# respectively, puts coal work for three and is respectively separated 8~10 holders successively
Sequence puts coal.One complete coal cycle of putting needs holder to execute following action successively：Back card/back board is withdrawn, the rear balance arm bottom to α is
65~75 °, stop 3~5s, 5~10 ° of pendulum on rear balance arm, 5~10 ° of the rear balance arm bottom, pendulum is stopped to extreme position on rear balance arm
5~10s.It is in low-end trim when the balance arm bottom to α is 65~75 ° after wherein, 5~10 ° of pendulum, 5~10 ° of the bottom are on rear balance arm
One shake action, this shake act the disturbance that can increase granular media coal cinder, and coal efficiency is put in raising；Afterwards extreme position is swung on balance arm
When be in high-end trim, using the very heavy pressure of rear balance arm promote top top coal in crack further development.To keep top coal equal
Even decline, 1#, 2# put coal work need to execute same number put coal cycle.1# put coal work executed several put coal cycle after, most
It is 35~40 ° that rear balance arm, which is put to α, afterwards, and back card/back board stretches out, and 1# is put coal work and terminated to the coal of putting of this.After certain interval of time,
2# put coal work to this execute with 1# put coal work it is identical put coal act.After certain interval of time, 3# is put coal work and is executed to this
Put coal act from 1#, 2# put coal work unlike its put coal cycle-index depending on spoil situation above rear balance arm, accomplish
" seeing that cash closes window ", putting coal work by three, sequence puts coal action to this execution successively, the coal of putting of this all terminates.
The present invention with it is existing put coal method compared with, has the following advantages：1, it when balance arm is in low-end trim after holder, executes
Shake acts, which exacerbates the disturbance of granular media coal cinder above rear balance arm, improves and puts coal efficiency.2, balance arm is in after holder
When high-end trim, promote the development in crack in middle part top coal, top top coal using the very heavy pressure of rear balance arm, coal is put for next bit
Work efficiently puts coal and provides condition.3,1#, 2# put coal work to each holder be performed both by same number put coal cycle, it is ensured that top coal
Uniformly decline, improves the rate of recovery of resource, reduces percentage of shale content.
Description of the drawings
Fig. 1 is working face and hydraulic support arrangement schematic diagram in the present invention；
Fig. 2 is hydraulic rack structure and top coal layering cranny development schematic diagram in the present invention.
In figure：A-working face；B-air inlet crossheading；C-air return way；D-goaf；E-hydraulic support；1#、2#、
3#-puts coal work number；The rear balance arms of α-and horizontal sextant angle；1-top top coal；2-middle part top coals；3-lower part top coals；4-cover
Guard beam；5-rear balance arms；6-back card/back boards；7-rearside conveyors；8-columns；9-main canopies；10-forestopes；11-top coals.
Specific implementation mode
Technical scheme of the present invention is described further below in conjunction with the accompanying drawings.
As shown in Figure 1 to Figure 2, coal method is put in the high-order presplitting layering of a kind of super high seam low level shake, and working face A shares three
Coal work is put, number is 1#, 2#, 3# respectively, puts coal work and is respectively separated 8~10 holder E for three and sequentially puts coal successively.One complete
Coal cycle of putting need holder E to execute following act successively：Back card/back board 6 withdraw, 5 bottom of rear balance arm to α be 65~75 °, stop 3~
5~10 ° are put on 5s, rear balance arm 5,5~10 ° of 5 bottom of rear balance arm, pendulum stops 5~10s to extreme position on rear balance arm 5.Wherein,
It is in low-end trim when 5 bottom of balance arm to α is 65~75 ° afterwards, 5~10 ° of pendulum, 5~10 ° of the bottom are a shake on rear balance arm 5
Action, this shake act the disturbance that can increase granular media coal cinder, and coal efficiency is put in raising；It is in when swinging to extreme position on balance arm 5 afterwards
High-end trim promotes the further development in crack in the top coal of top using the very heavy pressure of rear balance arm.To make top coal uniformly decline,
1#, 2# put coal work need to execute same number put coal cycle, top coal thickness and put coal cycle relationship be shown in Table 1.1# is put coal work and is held
It has gone after several put coal cycle, it is 35~40 ° finally to put rear balance arm 5 to α, and back card/back board 6 stretches out, and 1# puts coal work to this 's
Coal is put to terminate.After certain interval of time, 2# put coal work to this execute with 1# put coal work it is identical put coal act.When being spaced one section
Between after, 3# put coal work to this execute put coal act from 1#, 2# put coal work unlike its put coal cycle-index and put after
Depending on 5 top spoil situation of beam, accomplish " seeing that cash closes window ", putting coal work by three, sequence puts coal action to this execution successively,
The coal of putting of this all terminates.
1 top coal thickness of table and put coal recurrence relation
| Top coal thickness/m | <5 | 5~10 | 10~15 | 15~20 | >20 |
| Put coal cycle-index | 1 | 2 | 3 | 4 | 5 |
It is to carry out low level with the coal seams Xin coal mine C3-5# to Shanxi Province's Datong Coal Group Company using the method for the present invention to shake a high position below
Presplitting is layered the specific embodiment for putting coal, which is merely exemplary, and does not do any restriction to the present invention：
Shanxi Province's Datong Coal Group Company was all to carry out caving using single-wheel sequence drawing coal technology with the coal seams Xin coal mine C3-5# in the past
Coal, when putting coal after balance arm only do up and down reciprocatingly wobbling action, until there is bulk spoil, coal is put in stopping.Since 2 months 2016
Sub-Level Caving is carried out using the method for the present invention in 8207 faces, working face extraction rate reaches 93.5%, and percentage of shale content 14.5% is suitable with single-wheel
Sequence drawing coal technology compares, and the rate of extraction improves 5.4%, and percentage of shale content reduces 3.8%.
Claims (3)
1. coal method is put in a kind of high-order presplitting layering of super high seam low level shake, it is characterised in that：Working face shares three and puts coal work,
It puts coal work for wherein preceding two and coal cycle is put to each holder execution same number, it is true according to top coal thickness to put coal cycle-index
It is fixed, it is ensured that top coal uniformly declines.
2. according to the method described in claim 1, it is characterized in that：When balance arm is in low-end trim after holder, it is dynamic to execute shake
Make, which exacerbates the disturbance of granular media coal cinder above rear balance arm, improves and puts coal efficiency.
3. according to the method described in claim 1, it is characterized in that：When balance arm is in high-end trim after holder, rear balance arm is utilized
Very heavy pressure promote middle part top coal, in the top coal of top crack development, put coal work for next bit and efficiently put coal condition is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710038984.6A CN108343439A (en) | 2017-01-21 | 2017-01-21 | Coal method is put in a kind of high-order presplitting layering of super high seam low level shake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710038984.6A CN108343439A (en) | 2017-01-21 | 2017-01-21 | Coal method is put in a kind of high-order presplitting layering of super high seam low level shake |
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| Publication Number | Publication Date |
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| CN108343439A true CN108343439A (en) | 2018-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710038984.6A Pending CN108343439A (en) | 2017-01-21 | 2017-01-21 | Coal method is put in a kind of high-order presplitting layering of super high seam low level shake |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404028A (en) * | 2018-10-15 | 2019-03-01 | 河南工程学院 | Coal method is put in a kind of starting of the more coal discharge outlets of fully mechanized coal face |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1786420A (en) * | 2004-12-10 | 2006-06-14 | 兖州煤业股份有限公司 | Electric hydraulic controlled caving coal method and it hydraulic supporter |
| CN1888390A (en) * | 2006-07-12 | 2007-01-03 | 山西潞安矿业(集团)有限责任公司 | High gas yoke thick coal seam quasi-large-scale mining and high comprehensive mining low-level caving technique |
| CN101592035A (en) * | 2009-06-25 | 2009-12-02 | 中煤北京煤矿机械有限责任公司 | Big mining height shield type low caving coal hydraulic support |
| WO2012162720A1 (en) * | 2011-05-31 | 2012-12-06 | Yancoal Australia Ltd | Coal saver |
-
2017
- 2017-01-21 CN CN201710038984.6A patent/CN108343439A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1786420A (en) * | 2004-12-10 | 2006-06-14 | 兖州煤业股份有限公司 | Electric hydraulic controlled caving coal method and it hydraulic supporter |
| CN1888390A (en) * | 2006-07-12 | 2007-01-03 | 山西潞安矿业(集团)有限责任公司 | High gas yoke thick coal seam quasi-large-scale mining and high comprehensive mining low-level caving technique |
| CN101592035A (en) * | 2009-06-25 | 2009-12-02 | 中煤北京煤矿机械有限责任公司 | Big mining height shield type low caving coal hydraulic support |
| WO2012162720A1 (en) * | 2011-05-31 | 2012-12-06 | Yancoal Australia Ltd | Coal saver |
Non-Patent Citations (1)
| Title |
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| 杨振复等: "《放顶煤开采技术与放顶煤液压支架》", 31 July 1995 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404028A (en) * | 2018-10-15 | 2019-03-01 | 河南工程学院 | Coal method is put in a kind of starting of the more coal discharge outlets of fully mechanized coal face |
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Application publication date: 20180731 |