CN106499394A - A kind of machine gun is closed adopts the coal winning technology for improving lump coal rate - Google Patents
A kind of machine gun is closed adopts the coal winning technology for improving lump coal rate Download PDFInfo
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- CN106499394A CN106499394A CN201611004699.4A CN201611004699A CN106499394A CN 106499394 A CN106499394 A CN 106499394A CN 201611004699 A CN201611004699 A CN 201611004699A CN 106499394 A CN106499394 A CN 106499394A
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- 239000003245 coal Substances 0.000 title claims abstract description 120
- 238000005516 engineering process Methods 0.000 title claims abstract description 36
- 238000005065 mining Methods 0.000 claims abstract description 33
- 238000010276 construction Methods 0.000 claims abstract description 14
- 238000004880 explosion Methods 0.000 claims abstract description 12
- 238000005422 blasting Methods 0.000 claims abstract description 10
- 239000002360 explosive Substances 0.000 claims description 20
- 238000005553 drilling Methods 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 7
- 239000011435 rock Substances 0.000 claims description 7
- 201000010041 presbyopia Diseases 0.000 claims description 5
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 4
- 235000011613 Pinus brutia Nutrition 0.000 claims description 4
- 241000018646 Pinus brutia Species 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The coal winning technology that raising lump coal rate is adopted in a kind of machine gun conjunction includes two operations of standing and comprehensive mechanical coal mining, and described standing is referred to and adopts blasting energy, makes rib become cranny development body, carry out in the steps below：The first step, determines the technical parameter of standing；Second step, according to relaxation zone radius, determines spacing；3rd step, in conjunction with factors such as construction equipment, construction technology level and labour intensity, determines borehole turn hole depth；4th step, carries out blashole charge amount calculating；5th step, hole placing；6th step, line explosion；7th step, carries out combining testing big gun；8th step, carries out comprehensive mechanical coal mining；9th step, after standing, loosens big gun and advances two knives again.A kind of machine gun of the present invention is closed adopts the coal winning technology for improving lump coal rate, can effectively improve the rate of output of lump coal, mitigate the abrasion of plant equipment, reduce fault rate, improve the operating efficiency of staff, increase economic benefit.
Description
Technical field
The present invention relates to coal mining technique, more particularly to a kind of machine gun is closed and adopts the coal winning technology for improving lump coal rate.
Background technology
At this stage, under the trend of propulsion supply side structural reform, in " three go one benefit of a drop " five big tasks, production capacity is gone
Rank first, in coal, iron and steel, cement, five big industry of plate glass and ship, coal is the difficulty in difficulty.During " 13 ", land
Continuous some small-size coal mines of closing, upgrading colliery, coal and gas outburst mine, loss mine and resource exhaustion mine etc..?
Under the overall background of production capacity surplus, it is unworkable that simple dependence coal output improves coal enterprise income, and situation is forced, it has in coal
Make an effort in matter.On the premise of ature of coal ensures, the fuel value of lump coal is far above the fuel value of smalls again, and with good pin
Advantage is sold, most still " is shown special preference to " to lump coal with coal rich and influential family, but the mining area for " three is hard " geological conditions, by existing
Some high working faces, disposable mining full height and Sub-Level Caving fully mechanized coal winning technology, output lump coal rate is low and equipment attrition is serious,
In coal industry currently unable to make ends meet, the coalfield that causes really cannot get high profit, it is impossible to realize its value maximization, nothing
The waste of the energy is caused among shape.For the seam mining under this kind of geological conditions, maximum on the premise of coal production is kept
Limit ground improves lump coal rate, proposes and applies a kind of machine gun and close the coal winning technology for adopting raising lump coal rate.Machine gun is closed and is adopted, i.e., first put
Big gun is loosened, release and transfer part stress concentration in coal body, in the case where rib is cracked, loosened, recycle integrated machine
Tool equipment realizes comprehensive mechanical coal mining, in the hope of lump coal rate and its maximization of economic benefit.
Though blasting process application is relatively early, lump coal yield can be improved, be only applicable to thin seam mining and ocurrence of coal seam bar
The poor coal seam of part, efficiency of producing coal are low, and security is poor, and explosion produces coal lump coal rate for 10% or so.Mechanical coal mining is suitable for geology bar
Part scope is wider, efficiency high of producing coal, but the coalfield big to hardness, and equipment attrition is more serious, and fault rate is high, and lump coal amount receives geology bar
Part affects greatly, and lump coal rate is as little as less than 20%.The patent of invention of Application No. 201310729922.1 discloses a kind of coal mine
Lower big gun is adopted and adopts unitized production method with general, although be refer to big gun and is adopted and conventionally mechanized coal winning technology, but emphasis is different, should
Patent of invention be for same coal-face for, mining thickness change is again more apparent, is drawn according to the size of mining thickness again
Be divided into single big gun and adopt and coal breakage is adopted with single machine, it is therefore an objective to solve that middle-size and small-size pit mining is relatively costly, back production is relatively low asks
Topic；And blasting process and machine excavating technology are not linked together, the problem of lump coal rate is not mentioned to yet, with the application patent machine gun
The emphasis of coal winning technology is adopted in conjunction does not have related association.
Accordingly, it would be desirable to a kind of can effectively improve lump coal rate, mitigate the abrasion of plant equipment and reduce the machine gun conjunction of fault rate
Adopt coal winning technology.
Content of the invention
It is an object of the invention to, in place of overcoming the deficiencies in the prior art, there is provided a kind of machine gun is closed to adopt and improves lump coal rate
Coal winning technology, can effectively improve the rate of output of lump coal, mitigate the abrasion of plant equipment, reduce fault rate, improve staff
Operating efficiency, increase economic benefit.
The coal winning technology that raising lump coal rate is adopted in a kind of machine gun conjunction of the present invention includes standing and comprehensive mechanical
Change two operations of mining, described standing is referred to and adopts blasting energy, makes rib become cranny development body, in the steps below
Carry out：
The first step, determines the technical parameter of standing, (forms broken circle, pine according to explosion to the destructiveness of coal (rock) body
Moving-coil and the range size of vibrations circle), in conjunction with explosive and coal body relevant parameter, calculate its relaxation zone radius；
Second step, according to relaxation zone radius, determines that spacing, spacing include level interval and vertical interval, institute
The level interval that states and vertical interval are 1.6 meters 2.0 meters；
3rd step, in conjunction with factors such as construction equipment, construction technology level and labour intensity, advances 0.8 meter to calculate according to every knife, and one
Secondary loosening big gun propulsion knife number is two knives, determines that borehole drilling depth is 1.7 meters 1.8 meters；
4th step, carries out blashole charge amount calculating, and standing is different from blasting coal mining, must control dose, both to reach
Coal body can be loosened, crack is produced, is not the effect of avalanche rock mass again, is calculated according to the first step, second step and the 3rd step
Relevant parameter and every hole explosive payload, in conjunction with coal body parameter and demolition effect, carry out suitably adjusting explosive payload, further according to ature of coal
Hardness and explosive parameter, after appropriate adjustment, determine that every hole explosive payload is 450g 500g；
5th step, hole placing, according to the related data of the first step, second step, the 3rd step and the 4th step, and working face wall
Long and mining height, is provided with borehole drilling, is provided with powder stick and detonator, and uses stemming in borehole drilling on working face under the top plate
Closure, determines that the level interval and vertical interval of borehole constitute three presbyopia formula structures；
6th step, line explosion；
7th step, carries out combining testing big gun；
8th step, carries out comprehensive mechanical coal mining using fully-mechanized mining equipment；
9th step, after standing, loosens big gun and advances two knives again.
A kind of machine gun of the present invention is closed adopts the coal winning technology for improving lump coal rate, can effectively improve the rate of output of lump coal,
Mitigate the abrasion of plant equipment, reduce fault rate, improve the operating efficiency of staff, increase economic benefit.
Description of the drawings
Accompanying drawing 1 is that a kind of machine gun of the present invention closes the coal winning technology schematic diagram for adopting raising lump coal rate, quick-fried comprising loosening
Broken and with two operations of comprehensive mechanical coal mining.
Accompanying drawing 2 is that three presbyopia formula of the coal winning technology borehole arrangement that raising lump coal rate is adopted in a kind of machine gun conjunction of the present invention is shown
It is intended to.
Accompanying drawing 3 is that the coal winning technology borehole periphery coal body damage that raising lump coal rate is adopted in a kind of machine gun conjunction of the present invention is broken
Bad distribution map.
Accompanying drawing 4 is that a kind of machine gun of the present invention closes the coal winning technology blashole charge structure for adopting raising lump coal rate.
1 top board, 2 borehole drilling 3 working face, 4 fully-mechanized mining equipment, 5 powder stick, 6 detonator, 7 big gun
Broken circle 9 relaxation zone 10 vibrations circle 11 level interval, 12 vertical interval of mud 8.
Specific embodiment
Embodiment 1：
Referring now to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4, in conjunction with specific embodiments, it is described as follows：A kind of machine of the present invention
Big gun is closed adopts the coal winning technology for improving lump coal rate, includes two operations of standing and comprehensive mechanical coal mining, described loosening
Explosion is referred to and adopts blasting energy, makes rib become cranny development body, carry out in the steps below：
The first step, determines the technical parameter of standing, (forms broken circle 8, pine according to explosion to the destructiveness of coal (rock) body
Moving-coil 9 and the range size of vibrations circle 10), in conjunction with explosive and coal body relevant parameter, calculate its relaxation zone radius；
Second step, according to relaxation zone radius, determines that spacing, spacing include level interval 11 and vertical interval
12, the larger location of pressure, when rib is loose, the level interval 11 and vertical interval 12 of borehole are 2.0 meters；
3rd step, in conjunction with factors such as construction equipment, construction technology level and labour intensity, advances 0.8 meter to calculate according to every knife, and one
Secondary loosening big gun propulsion knife number is two knives, and it is two knives once to loosen big gun propulsion knife number, and pressure larger location, when rib is loose, determines
Go out borehole 2 depth are drilled for 1.7 meters；
4th step, carries out blashole charge amount calculating, and standing is different from blasting coal mining, must control dose, both to reach
Coal body can be loosened, crack is produced, is not the effect of avalanche rock mass again, is calculated according to the first step, second step and the 3rd step
Relevant parameter and every hole explosive payload, in conjunction with coal body parameter and demolition effect, carry out suitably adjusting explosive payload, further according to ature of coal
Hardness and explosive parameter, after appropriate adjustment, when ature of coal is softer, determine that every hole explosive payload is 450g；
5th step, hole placing, according to the related data of the first step, second step, the 3rd step and the 4th step, and working face wall
Long and mining height, is provided with borehole drilling 2, is provided with powder stick 5 and detonator 6 in borehole drilling 2 on the working face 3 under top board 1, and
Blocked with stemming 7, determine the level interval 11 of borehole and vertical between 12 away from constituting three presbyopia formula structures；
6th step, line explosion；
7th step, carries out combining testing big gun；
8th step, carries out comprehensive mechanical coal mining using fully-mechanized mining equipment 4；
9th step, after standing, loosens big gun and advances two knives again.
Embodiment 2：
Referring now to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4, in conjunction with specific embodiments, it is described as follows：A kind of machine of the present invention
Big gun is closed adopts the coal winning technology for improving lump coal rate, includes two operations of standing and comprehensive mechanical coal mining, described loosening
Explosion is referred to and adopts blasting energy, makes rib become cranny development body, carry out in the steps below：
The first step, determines the technical parameter of standing, (forms broken circle 8, pine according to explosion to the destructiveness of coal (rock) body
Moving-coil 9 and the range size of vibrations circle 10), in conjunction with explosive and coal body relevant parameter, calculate its relaxation zone radius；
Second step, according to relaxation zone radius, determines that spacing, spacing include level interval 11 and vertical interval
12, pressure section smaller, when rib is tight, the level interval 11 and vertical interval 12 of borehole are 1.6 meters；
3rd step, in conjunction with factors such as construction equipment, construction technology level and labour intensity, advances 0.8 meter to calculate according to every knife, and one
Secondary loosening big gun propulsion knife number is two knives, and it is two knives once to loosen big gun propulsion knife number, pressure section smaller, when rib is tight, determines
Go out borehole 2 depth are drilled for 1.8 meters；
4th step, carries out blashole charge amount calculating, and standing is different from blasting coal mining, must control dose, both to reach
Coal body can be loosened, crack is produced, is not the effect of avalanche rock mass again, is calculated according to the first step, second step and the 3rd step
Relevant parameter and every hole explosive payload, in conjunction with coal body parameter and demolition effect, carry out suitably adjusting explosive payload, further according to ature of coal
Hardness and explosive parameter, after appropriate adjustment, when ature of coal is harder, determine that every hole explosive payload is 500g；
5th step, hole placing, according to the related data of the first step, second step, the 3rd step and the 4th step, and working face wall
Long and mining height, is provided with borehole drilling 2, is provided with powder stick 5 and detonator 6 in borehole drilling 2 on the working face 3 under top board 1, and
Blocked with stemming 7, determine that the level interval 11 and vertical interval 12 of borehole constitute three presbyopia formula structures；
6th step, line explosion；
7th step, carries out combining testing big gun；
8th step, carries out comprehensive mechanical coal mining using fully-mechanized mining equipment 4；
9th step, after standing, loosens big gun and advances two knives again.
A kind of machine gun of the present invention is closed adopts the coal winning technology for improving lump coal rate, can effectively improve the rate of output of lump coal,
Mitigate the abrasion of plant equipment, reduce fault rate, improve the operating efficiency of staff, increase economic benefit.
Claims (7)
1. a kind of machine gun is closed and adopts the coal winning technology for improving lump coal rate, includes two works of standing and comprehensive mechanical coal mining
Sequence, it is characterised in that：Described standing refers to and adopts blasting energy, makes rib become cranny development body, in the steps below
Carry out：
The first step, determines the technical parameter of standing, (forms broken circle, pine according to explosion to the destructiveness of coal (rock) body
Moving-coil and the range size of vibrations circle), in conjunction with explosive and coal body relevant parameter, calculate its relaxation zone radius；
Second step, according to relaxation zone radius, determines that spacing, spacing include level interval and vertical interval, institute
The level interval that states and vertical interval are 1.6 meters 2.0 meters；
3rd step, in conjunction with factors such as construction equipment, construction technology level and labour intensity, advances 0.8 meter to calculate according to every knife, and one
Secondary loosening big gun propulsion knife number is two knives, determines that borehole drilling depth is 1.7 meters 1.8 meters；
4th step, carries out blashole charge amount calculating, the relevant parameter that calculated according to the first step, second step and the 3rd step and per hole
Explosive payload, determines that every hole explosive payload is 450g 500g；
5th step, hole placing, according to the related data of the first step, second step, the 3rd step and the 4th step, and working face wall
Long and mining height, is provided with borehole drilling, is provided with powder stick and detonator, and uses stemming in borehole drilling on working face under the top plate
Closure, determines that the level interval and vertical interval of borehole constitute three presbyopia formula structures；
6th step, line explosion；
7th step, carries out combining testing big gun；
8th step, carries out comprehensive mechanical coal mining using fully-mechanized mining equipment；
9th step, after standing, loosens big gun and advances two knives again.
2. a kind of machine gun according to claim 1 is closed and adopts the coal winning technology for improving lump coal rate, it is characterised in that：Described
Two steps, according to relaxation zone radius, determine that spacing, spacing include level interval and vertical interval, and pressure is larger
Location, when rib is loose, the level interval and vertical interval of borehole are 2.0 meters.
3. a kind of machine gun according to claim 2 is closed and adopts the coal winning technology for improving lump coal rate, it is characterised in that：Described
Three steps, in conjunction with factors such as construction equipment, construction technology level and labour intensity, advance 0.8 meter of calculating according to every knife, once loosen
Big gun propulsion knife number is two knives, and pressure larger location, when rib is loose, determines that borehole turn hole depth is 1.7 meters.
4. a kind of machine gun according to claim 3 is closed and adopts the coal winning technology for improving lump coal rate, it is characterised in that：Described
Four steps, carry out blashole charge amount calculating, the relevant parameter that calculated according to the first step, second step and the 3rd step and per hole powder charge
Amount, determines that every hole explosive payload is 450g.
5. a kind of machine gun according to claim 1 is closed and adopts the coal winning technology for improving lump coal rate, it is characterised in that：Described
Two steps, according to relaxation zone radius, determine that spacing, spacing include level interval and vertical interval, and pressure is less
Location, when rib is tight, the level interval and vertical interval of borehole are 1.6 meters.
6. a kind of machine gun according to claim 5 is closed and adopts the coal winning technology for improving lump coal rate, it is characterised in that：Described
Three steps, in conjunction with factors such as construction equipment, construction technology level and labour intensity, advance 0.8 meter of calculating according to every knife, once loosen
Big gun propulsion knife number is two knives, pressure section smaller, when rib is tight, determines that borehole turn hole depth is 1.8 meters.
7. a kind of machine gun according to claim 6 is closed and adopts the coal winning technology for improving lump coal rate, it is characterised in that：Described
Four steps, carry out blashole charge amount calculating, the relevant parameter that calculated according to the first step, second step and the 3rd step and per hole powder charge
Amount, determines that every hole explosive payload is 500g.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611004699.4A CN106499394A (en) | 2016-11-16 | 2016-11-16 | A kind of machine gun is closed adopts the coal winning technology for improving lump coal rate |
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| CN201611004699.4A CN106499394A (en) | 2016-11-16 | 2016-11-16 | A kind of machine gun is closed adopts the coal winning technology for improving lump coal rate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506001A (en) * | 2018-03-27 | 2018-09-07 | 兖矿集团有限公司 | A kind of efficient method for improving hypotonicity coal seam lump coal rate |
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Application publication date: 20170315 |