CN108086975A - Huge thickness hard coal seam high position technique lane release draws out methane Sub-Level Caving coal-mining method - Google Patents
Huge thickness hard coal seam high position technique lane release draws out methane Sub-Level Caving coal-mining method Download PDFInfo
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- CN108086975A CN108086975A CN201711457806.3A CN201711457806A CN108086975A CN 108086975 A CN108086975 A CN 108086975A CN 201711457806 A CN201711457806 A CN 201711457806A CN 108086975 A CN108086975 A CN 108086975A
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- coal
- lane
- coal seam
- thick hard
- carbon dioxide
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- 239000003245 coal Substances 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 70
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000005065 mining Methods 0.000 title claims abstract description 21
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 55
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 27
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 27
- 238000004880 explosion Methods 0.000 claims abstract description 23
- 238000000605 extraction Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 238000010276 construction Methods 0.000 claims abstract description 4
- 238000009423 ventilation Methods 0.000 claims abstract description 4
- 230000003245 working effect Effects 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 3
- 239000003818 cinder Substances 0.000 claims description 2
- 238000005422 blasting Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 230000005012 migration Effects 0.000 abstract description 2
- 238000013508 migration Methods 0.000 abstract description 2
- 229960004424 carbon dioxide Drugs 0.000 description 18
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
- E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
- E21C37/14—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by compressed air; by gas blast; by gasifying liquids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
Draw out methane Sub-Level Caving coal-mining method the invention discloses a kind of huge thick hard coal seam high position technique lane release, belong to Sub-Level Caving coal-mining technique field, including arranging top-coal caving face along huge thick hard coal seam bottom, at the top of top-coal caving face transportation roadway and top-coal caving face the air return lane respectively sensible huge thick hard coal seam in inclination arrangement second line of a couplet lane and first line of a couplet lane, and the high-order technique lane of one group of parallel arrangement is tunneled along huge thick hard coal seam head clearance, it is penetrated through between high-order technique lane with connection roadway, in connection roadway regulation wind window is set to control ventilation, high-order gas drainage pipe and drill site are arranged in high-order technique lane, utilize the downward construction drill of drill site, liquid carbon dioxide explosion generator is arranged in the borehole, the advanced top-coal caving face arrangement of carbon dioxide explosion generator；The present invention realizes working face safe working, and production efficiency is high, while uses liquid carbon dioxide explosion, blasting process essential safety, and is conducive to gas to the migration extraction of high-order technique lane.
Description
Technical field：
The present invention relates to Sub-Level Caving coal-mining technique field more particularly to huge thick hard coal seam high position technique lane release extractions watt
This Sub-Level Caving coal-mining method.
Background technology：
China's coal seam geological condition is complicated, and top coal caving, which is used as, has a kind of high-yield and high-efficiency production technique to obtain a certain range
Popularization and application, but coal caving mining method coal mining rate is low, face gas administer difficulty be influence its develop restriction because
Element, it is particularly problematic when especially carrying out top coal caving under the conditions of huge thick hard coal seam.
At present, domestic scholars propose coal seam is anti-reflection and the technical method of release, mainly include explosive Deephole pre-splitting blasting,
Hydraulic fracturing, hydraulic flushing in hole, waterpower slotting, hydraulic slotted liner technique etc..Since the anti-reflection technology in part and process are defective, Hen Duoji
The effect of art measure is unsatisfactory.
Patent document CN201610263144.5 discloses a kind of reduction hard coal seam caving based on carbon dioxide explosion
The method of coal uses carbon dioxide explosion to weaken top hard coal, makes top coals' recovery ratio than being improved before top plate fracturing
20%~30%, but its between two hydraulic support top beams at the top plate of coal wall drilling to the Influence of production of working face
It is larger.
The content of the invention：
It is an object of the invention to provide a kind of huge thick hard coal seam high position technique lane release Sub-Level Cavings that draws out methane to mine
Method, to solve the above problems.
Purpose to realize the present invention, the technical solution used for：A kind of huge thick hard coal seam high position technique lane release is taken out
Methane Sub-Level Caving coal-mining method, including along huge thick hard coal seam bottom arrangement top-coal caving face, being transported from top-coal caving face
Defeated lane and top-coal caving face air return lane be respectively at the top of the sensible huge thick hard coal seam in inclination arrangement second line of a couplet lane and first line of a couplet lane, and along huge
Thick hard coal seam head clearance tunnels the high-order technique lane of one group of parallel arrangement, is penetrated through between high-order technique lane with connection roadway, gets in touch with
In lane regulation wind window is set to control ventilation, high-order gas drainage pipe and drill site are arranged in high-order technique lane, it is downward using drill site
Construction drill arranges liquid carbon dioxide explosion generator, the advanced Sub-Level Caving work of carbon dioxide explosion generator in the borehole
Face arranges, the gas of the high-order gas drainage pipe extraction in each high position technique lane stops adopting the connection roadway of line side and come together in by being located at
Total extraction pipeline, and pass through the first line of a couplet lane and enter movable gas pumping station.
Further, the huge thick hard coal seam thickness is 9~25m, and hardness factor is 1.5 ＜ f ＜ 5.0.
Further, the first line of a couplet lane, second line of a couplet lane tilt 25 ° of sensible high-order techniques along bottom stope drift active workings
Lane.
Further, the high-order technique lane and top-coal caving face stope drift active workings spacing L1=40m, high-order technique lane it
Between spacing L2=30m.
Further, the high-order gas drainage pipe extraction end perforate, aperture segment length L5=12m+r, wherein r are two
Coal wall distance L is stretched out at carbonoxide blast disturbance radius, high-order gas drainage pipe extraction end3=12m.
Further, the carbon dioxide explosion generator buried depth is equal to its blast disturbance radius r, explosion first advance
Distance L4=r, wherein r are carbon dioxide blast disturbance radius.
Further, depending on carbon dioxide explosion dosage is with stope specific environment, carbon dioxide explosion dosage b is disturbed with explosion
Functional relation between dynamic radius r is that r=aln (cb+1), wherein a and c are constant, coal thickness H and carbon dioxide blast disturbance
The functional relation that radius r and advanced bearing stress are broken between coal height s is：
f1- coal cinder coefficient of internal friction, h-bottom mining height, l-stent distance of face roof under control,- coal body internal friction angle.
The invention has the advantages that by huge thick hard coal seam top layout high position technique lane and connection roadway, both may be used
It with to in-place blasting out coal body Gas pre-drainage in front of working face, and realizes working face top and rear portion goaf gas drainage, realizes
Working face safe working, production efficiency is high, while use liquid carbon dioxide explosion does not generate airborne dust and carbon monoxide etc. and has
Malicious harmful substance, blasting process essential safety, and carbon dioxide density is big, is conducive to gas and is taken out to the migration of high-order technique lane
It puts.
Description of the drawings：
Fig. 1 is that huge thick hard coal seam high position technique lane release draws out methane Sub-Level Caving coal-mining method arrangement schematic diagram；
Fig. 2 is that the huge thick hard coal seam high position technique lane release Sub-Level Caving coal-mining method top coal that draws out methane emits and puts preceding coal and rock
Structure diagram；
Fig. 3 is that the huge thick hard coal seam high position technique lane release Sub-Level Caving coal-mining method top coal that draws out methane emits and puts rear coal and rock
Structure diagram.
In figure：1st, high-order technique lane, 2, connection roadway, 3, high-order gas drainage pipe, 4, drill site, 5, drilling, 6, carbon dioxide
Explosion generator, 7, first line of a couplet lane, 8, regulation wind window, 9, second line of a couplet lane, 10, top-coal caving face transportation roadway, 11, Sub-Level Caving work
Face, 12, goaf, 13, tailentry, 14, broken coal body.
Specific embodiment：
The present invention is described in further detail below by specific embodiment and with reference to attached drawing.
As shown in Figs. 1-3, along huge thick hard coal seam bottom arrangement top-coal caving face 11, from top-coal caving face transportation roadway
10 and top-coal caving face air return lane 13 respectively at the top of the sensible huge thick hard coal seam in inclination arrangement second line of a couplet lane 9 and first line of a couplet lane 7, and edge
Huge thickness hard coal seam head clearance tunnels the high-order technique lane 1 of one group of parallel arrangement, is penetrated through between high-order technique lane 1 with connection roadway 2,
In connection roadway 2 regulation wind window 8 is set to control ventilation, high-order gas drainage pipe 3 and drill site 4 are arranged in high-order technique lane 1, is utilized
4 downward construction drill 5 of drill site arranges liquid carbon dioxide explosion generator 6 in drilling 5, and carbon dioxide explosion generator 6 surpasses
Preceding top-coal caving face 11 arranges that 6 advanced top-coal caving face 11 of carbon dioxide explosion generator is arranged, each high position technique lane 1
In the gas of 3 extraction of high-order gas drainage pipe stop the connection roadway for adopting line side 2 by being located at and come together in total extraction pipeline, and pass through
The first line of a couplet lane 7 enters movable gas pumping station.
By taking certain colliery as an example, huge thickness hard coal seam thickness is 23m, and hardness factor f=4.5 is calculated according to field condition
Required blast disturbance radius r is 8m, and through field test, the function between carbon dioxide explosion dosage b and blast disturbance radius r closes
It is that formula is r=5.4ln (0.224b+1), can be calculated required carbon dioxide explosion dosage b as 15kg, first line of a couplet lane, second line of a couplet lane edge
Bottom stope drift active workings tilt 25 ° of sensible high-order technique lanes, between high-order technique lane and top-coal caving face stope drift active workings
Away from L1=40m, spacing L between high-order technique lane2=30m, the high position gas drainage pipe extraction end perforate, aperture segment length
L5Coal wall distance L is stretched out at=20m, high-order gas drainage pipe extraction end3=12m.
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the invention, for those skilled in the art
For member, the invention may be variously modified and varied, within the spirit and principles of the invention, any modification for being made,
Equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (7)
- The Sub-Level Caving coal-mining method 1. a kind of huge thick hard coal seam high position technique lane release draws out methane, which is characterized in that along huge thickness Hard coal seam bottom arrangement top-coal caving face (11), from top-coal caving face transportation roadway (10) and top-coal caving face air return lane (13) respectively at the top of inclination arrangement second line of a couplet lane (9) and first line of a couplet lane (7) sensible huge thick hard coal seam, and along at the top of huge thick hard coal seam The high-order technique lane (1) of one group of parallel arrangement is tunneled at interval, is penetrated through between high-order technique lane (1) with connection roadway (2), connection roadway (2) Middle setting regulation wind window (8) controls ventilation, the high-order gas drainage pipe (3) of arrangement and drill site (4), profit in high-order technique lane (1) With the downward construction drill (5) of drill site (4), arrangement liquid carbon dioxide explosion generator (6) in drilling (5), carbon dioxide is quick-fried Broken generator (6) in advance arrange by top-coal caving face (11), high-order gas drainage pipe (3) extraction in each high position technique lane (1) Gas stop the connection roadway for adopting line side (2) by being located at and come together in total extraction pipeline, and pass through the first line of a couplet lane (7) into movement Gas pumping station.
- 2. huge thick hard coal seam high position technique lane release according to claim 1 draws out methane Sub-Level Caving coal-mining method, special Sign is：The huge thick hard coal seam thickness is 9~25m, and hardness factor is 1.5 ＜ f ＜ 5.0.
- 3. huge thick hard coal seam high position technique lane release according to claim 1 draws out methane Sub-Level Caving coal-mining method, special Sign is：The first line of a couplet lane (7), second line of a couplet lane (9) tilt 25 ° of sensible high-order technique lanes (1) along bottom stope drift active workings.
- 4. huge thick hard coal seam high position technique lane release according to claim 1 draws out methane Sub-Level Caving coal-mining method, special Sign is：The high position technique lane (1) and top-coal caving face stope drift active workings spacing L1=40m, spacing between high-order technique lane (1) L2=30m.
- 5. huge thick hard coal seam high position technique lane release according to claim 1 draws out methane Sub-Level Caving coal-mining method, special Sign is：Described high position gas drainage pipe (3) extraction end perforate, aperture segment length L5=12m+r, wherein r are quick-fried for carbon dioxide Broken disturbance radius, coal wall distance L is stretched out at high-order gas drainage pipe (3) extraction end3=12m.
- 6. huge thick hard coal seam high position technique lane release according to claim 1 draws out methane Sub-Level Caving coal-mining method, special Sign is：Carbon dioxide explosion generator (6) buried depth is equal to its blast disturbance radius r, explosion first advance distance L4= R, wherein r are carbon dioxide blast disturbance radius.
- 7. huge thick hard coal seam high position technique lane release according to claim 1 draws out methane Sub-Level Caving coal-mining method, special Sign is：Functional relation between carbon dioxide explosion dosage b and blast disturbance radius r is r=aln (cb+1), wherein a and c For constant, the functional relation that coal thickness H and carbon dioxide blast disturbance radius r and advanced bearing stress are broken between coal height s is：f1- coal cinder coefficient of internal friction, h-bottom mining height, l-stent distance of face roof under control,- coal body internal friction angle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711457806.3A CN108086975A (en) | 2017-12-27 | 2017-12-27 | Huge thickness hard coal seam high position technique lane release draws out methane Sub-Level Caving coal-mining method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711457806.3A CN108086975A (en) | 2017-12-27 | 2017-12-27 | Huge thickness hard coal seam high position technique lane release draws out methane Sub-Level Caving coal-mining method |
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| CN108086975A true CN108086975A (en) | 2018-05-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183138A (en) * | 2021-10-12 | 2022-03-15 | 安徽理工大学 | Coal seam end mining drilling hole presplitting blasting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1133422A1 (en) * | 1983-04-25 | 1985-01-07 | Донецкий Ордена Трудового Красного Знамени Политехнический Институт | Method of degassing a suit of coal beds |
| RU2108464C1 (en) * | 1996-04-08 | 1998-04-10 | Институт угля СО РАН | Method for sealing of degassing well |
| CN103016047A (en) * | 2012-12-20 | 2013-04-03 | 大同煤矿集团有限责任公司 | Method of draining gas in gob through long drill hole in roof trend on fully mechanized caving face |
| CN103437803A (en) * | 2013-08-22 | 2013-12-11 | 山西晋城无烟煤矿业集团有限责任公司 | Structure and method for gas drainage of drill holes of high-drainage drill field of coal mine |
| CN204609883U (en) * | 2015-05-05 | 2015-09-02 | 国家安全生产监督管理总局信息研究院 | A kind of carbon dioxide blasting excavation device |
| CN105804788A (en) * | 2016-05-16 | 2016-07-27 | 中国矿业大学 | Method for managing coalbed gas roadway |
-
2017
- 2017-12-27 CN CN201711457806.3A patent/CN108086975A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1133422A1 (en) * | 1983-04-25 | 1985-01-07 | Донецкий Ордена Трудового Красного Знамени Политехнический Институт | Method of degassing a suit of coal beds |
| RU2108464C1 (en) * | 1996-04-08 | 1998-04-10 | Институт угля СО РАН | Method for sealing of degassing well |
| CN103016047A (en) * | 2012-12-20 | 2013-04-03 | 大同煤矿集团有限责任公司 | Method of draining gas in gob through long drill hole in roof trend on fully mechanized caving face |
| CN103437803A (en) * | 2013-08-22 | 2013-12-11 | 山西晋城无烟煤矿业集团有限责任公司 | Structure and method for gas drainage of drill holes of high-drainage drill field of coal mine |
| CN204609883U (en) * | 2015-05-05 | 2015-09-02 | 国家安全生产监督管理总局信息研究院 | A kind of carbon dioxide blasting excavation device |
| CN105804788A (en) * | 2016-05-16 | 2016-07-27 | 中国矿业大学 | Method for managing coalbed gas roadway |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183138A (en) * | 2021-10-12 | 2022-03-15 | 安徽理工大学 | Coal seam end mining drilling hole presplitting blasting method |
| CN114183138B (en) * | 2021-10-12 | 2023-10-20 | 安徽理工大学 | Coal bed non-mining drilling pre-splitting blasting method |
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Application publication date: 20180529 |