CN110486079A - A kind of gas pumping method of super high seam separate zone production - Google Patents
A kind of gas pumping method of super high seam separate zone production Download PDFInfo
- Publication number
- CN110486079A CN110486079A CN201910919083.7A CN201910919083A CN110486079A CN 110486079 A CN110486079 A CN 110486079A CN 201910919083 A CN201910919083 A CN 201910919083A CN 110486079 A CN110486079 A CN 110486079A
- Authority
- CN
- China
- Prior art keywords
- gas
- working face
- large diameter
- segment
- super high
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 54
- 238000005086 pumping Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000007789 gas Substances 0.000 claims abstract description 84
- 238000000605 extraction Methods 0.000 claims abstract description 44
- 239000003245 coal Substances 0.000 claims abstract description 27
- 238000005553 drilling Methods 0.000 claims abstract description 26
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000010276 construction Methods 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- 238000005065 mining Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000005728 strengthening Methods 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000007569 slipcasting Methods 0.000 claims description 2
- 240000009087 Crescentia cujete Species 0.000 claims 1
- 235000005983 Crescentia cujete Nutrition 0.000 claims 1
- 235000009797 Lagenaria vulgaris Nutrition 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 230000003245 working effect Effects 0.000 abstract description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000004047 hole gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
-
- 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)
- Lining And Supports For Tunnels (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The present invention relates to a kind of gas pumping methods of super high seam separate zone production, belong to coal mine gas drainage and Treatment process field.Gob side entry retaining is carried out using the stope drift active workings that division working face is adopted at the end of the neighbouring upper exploitation section to exploiting field section, and lays high negative pressure extraction pipeline and lower negative pressure extraction pipeline；Construction concordant drill and carries out sealing of hole, and high negative pressure extraction pipe lap, and drilled before being mined pressure relief gas pumping mining during gas pre-drainage and back production using concordant；Multi-segment of constructing shares large diameter borehole and carries out goaf gas extraction with lower negative pressure extraction pipe lap with casing guard aperture, and multi-segment is shared large diameter borehole as note nitrogen drilling, nitrogen is injected to goaf, is used for goaf fire extinguishing.This method realizes that a lane is multi-purpose, long-hole instead of roadway, a Kong Duoyong, reduces gas control construction work amount, improves the gas pumping effect of super high seam separate zone production, reach effective improvement to the Gas of super high seam separate zone production, remarkable in economical benefits.
Description
Technical field
The invention belongs to coal mine gas drainage and Treatment process field, the gas for being related to a kind of super high seam separate zone production is taken out
Mining method.
Background technique
Coal is one of main energy sources needed for meeting people's production and living, and the high quality development of Coal Industrial is state, China
The justice that should have of the economic sustainable and healthy development of the people, China's super high seam (thickness is greater than 8m) rich reserves, are the height of Coal Industrial
Quality Developing provides resource guarantee.It is incident since super high seam thickness is larger in super high seam exploitation
It is that coal seam gas-bearing capacity is higher, and with the increase of pit mining depth, coal seam gas-bearing capacity is higher and higher, part mine
Gas bearing capacity even alreadys exceed 20m3/ t, gas control difficulty increase.
Gas drainage is effective main means for solving super high seam exploitation Gas.For super high seam separate zone production
When the gas drainage that is related to, since coal seam thickness is big, original gas bearing capacity is high, gas permeability of coal seam is low etc., gas is pre- before coal seam is adopted
Pumping difficulty is big, and extraction reaching standard time is long；Being underlied to be layered gas pressure relief and gush out during back production influences, working face and goaf gas
Outburst amount is big, and gas control difficulty further increases.When face gas is taken out in advance, since coal seam thickness is especially big, using concordant
Drilling gas pumping method effect is often poor, and using bottom plate crossing-hole gas extraction method, then borehole engineering amount is big, constructs
It is at high cost；During back production when gas drainage, since working face and Gas Outflow From Worked-out Area are big, using pipe laying pumping method effect
It is poor, and control difficulty is big, pipeline laying is (each layering repeats to lay) at high cost, then can only using high drill holes extracting method
Suitable for coal seam head separate zone production.Therefore, it for super high seam separate zone production, needs to seek a kind of safe and efficient gas drainage
Method, while solving gas during super high seam separate zone production working face adopts preceding gas pre-drainage and back production and efficiently administering, realization pair
Effective control of Gas during the efficient extraction and back production of super high seam separate zone production face gas.
Summary of the invention
In view of this, passing through the purpose of the present invention is to provide a kind of gas pumping method of super high seam separate zone production
It makes full use of existing tunnel and its positional relationship, realizes that a lane is multi-purpose, long-hole instead of roadway, a Kong Duoyong, reduce gas control construction
Project amount improves the gas pumping effect of super high seam separate zone production, reaches to the Gas of super high seam separate zone production
It effectively administers, remarkable in economical benefits.
In order to achieve the above objectives, the invention provides the following technical scheme:
A kind of gas pumping method of super high seam separate zone production, comprising the following steps:
S1. division working face is adopted using the end of the neighbouring upper exploitation section to exploiting field section of super high seam separate zone production
Stope drift active workings carry out gob side entry retaining and strengthening supporting, and laying is connected with high negative pressure extraction system in the gob side entry retaining tunnel of formation
High negative pressure extraction pipeline, and be connected with the lower negative pressure extraction pipeline of lower negative pressure extraction system；
S2. it is applied close to the lane side to exploiting field section side to each division working face that underlies to exploiting field section along gob side entry retaining tunnel
The concordants drilling that work is several to be spaced apart, drills to concordant carry out sealing of hole after the completion, and with the height that is laid in gob side entry retaining tunnel
Negative pressure extraction pipe lap；
S3. along gob side entry retaining tunnel close to exploiting field section side lane side to exploiting field section first division working face return air
The multi-segment that lane construction several groups are spaced apart shares large diameter borehole, shares in large diameter borehole and transfers to multi-segment after completion
Casing carries out complete opening section injection hole sealing, and is taken by each branched pipe with the lower negative pressure extraction pipeline laid in gob side entry retaining tunnel
It connects；
S4. it before the first division working face back production for treating exploiting field section, is drilled using concordant and carries out gas pre-drainage；
S5. it during the first division working face back production for treating exploiting field section, is drilled using concordant and carries out pressure relief gas pumping mining；
S6. during the first division working face and each division working face back production of underliing for treating exploiting field section, the every process of working face
One group of multi-segment shares large diameter borehole certain distance, and the switch for opening each branched pipe carries out goaf gas extraction；
S7. during the first division working face and each division working face back production of underliing for treating exploiting field section, the every process of working face
After one group of multi-segment shares large diameter borehole certain distance and stops goaf gas extraction, multi-segment shares large diameter borehole and makees
For note nitrogen drilling access mine nitrogen-filling system, nitrogen is injected to goaf, is used for goaf fire extinguishing.
Further, stayed in the step S1 to coal column between exploiting field section and neighbouring upper exploitation section set width as 6~
15m using frame canopy formula I-steel, U-shaped steel or soft mould supporting to gob side entry retaining tunnel strengthening supporting, and is adopting layering work close to end
Make to carry out grouting and reinforcing at the top of face side and tunnel, prevents from being connected with goaf.
Further, the concordant boring aperture constructed in the step S2 is φ 93mm or φ 113mm, and whole hole point is located at first minute
Below the bottom plate of layer working face at 3~5m, the spacing of two neighboring concordant drilling is 10~15m.
Further, the concordant drilling constructed in the step S2 carries out the depth of sealing of hole, according to gob side entry retaining region coal petrography
Physical parameter calculate coal column concentrated stress and influence sector width and determine, the depth of sealing of hole is not less than 15m, and concentrates in coal column
Stress influence area carries out guard aperture using high-intensitive flexible PEC guard aperture pipe.
Further, the step S3 includes the guide rod for cooperating 6 Φ 73mm*800mm using Φ 94mm drill bit first
Construction guidance hole, then using reaming bit, reaming forms multi-segment and shares large diameter borehole to φ 500mm step by step；2~3
It is 2m that multi-segment, which shares the spacing that large diameter borehole be the shared large diameter borehole of multi-segment in one group, each group, each group it
Between multi-segment share large diameter borehole spacing be 30~50m.
Further, the multi-segment constructed in the step S3 shares large diameter borehole, and tapping point is located at gob side entry retaining lane side
At 2.6~2.8m of gob side entry retaining roadway floor, whole hole point is located at the return air lane of first division working face apart from air return lane
At 0.2~0.5m of roadway floor.
It further, is high strength steel in the material that multi-segment shares the casing transferred in large diameter borehole in the step S3
Pipe, casing inner diameter are φ 300mm~φ 350mm, and each section casing length is 1~1.5m, between casing using band iron+bolt into
Row connection is transferred using chain block cooperation rope traction when decentralization.
Further, the multi-segment constructed in the step S3 shares large diameter borehole and is equipped with control valve, for watt
This extraction parameter is precisely controlled.
Further, when carrying out goaf gas extraction in the step S6, the passed through multi-segment of working face shares major diameter
The distance of drilling is 3~5m.
The beneficial effects of the present invention are:
(1) present invention makes full use of existing stope drift active workings to carry out gob side entry retaining, alternative bottom plate gas control lane and watt
This administers connection roadway, only realizes gas pre-drainage, pressure relief gas pumping mining to super high seam separate zone production simultaneously by a tunnel,
And goaf gas extraction, realize that a lane is multi-purpose, reduce the construction work amount in gas control tunnel, save gas control at
This, improves super high seam gas pumping effect, provides guarantor for the efficient extraction of safety coal extraction and gas of super high seam separate zone production
Barrier.
(2) pressure relief gas pumping mining during gas pre-drainage and back production, effective solution before the present invention is adopted using concordant drilling
The problem that bottom plate layer-through drilling roadway construction is at high cost, project amount is big is realized whole to the working face of super high seam separate zone production
It takes out in advance and the release extraction for each division working face that underlies, realization long-hole instead of roadway increases drainage from coal seam channel, improve gas pumping
Adopt effect.
(3) present invention shares large diameter borehole substitution gas control connection roadway with multi-segment, and multi-segment shares major diameter and bores
Hole is also used to carry out goaf gas extraction during back production, is precisely controlled by the control valve of installation to extraction parameter
System, goaf is completely isolated with methane gas extraction pipeline space, solve air return lane pipe laying extracting result it is poor, manage difficulty greatly,
Each layering repeats laying pipeline problem at high cost, realizes that the gas progress to face upper corner angle and goaf deep is continuous
Extraction and reliable control, reduce goaf gas effusion intensity, effectively control the face upper corner angle of super high seam separate zone production
Gas.In addition, multi-segment shares large diameter borehole as note nitrogen drilling and is used for goaf after goaf gas extraction
Nitrogen realizes a Kong Duoyong, realizes to effective pre-control of spontaneous combustion in goaf, achievees the purpose that goaf fire extinguishing.
Detailed description of the invention
To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention provides the following figures to illustrate:
Fig. 1 is a kind of plan view of the mash gas pumping drilling of super high seam separate zone production provided by the invention；
Fig. 2 is diagrammatic cross-section of the mash gas pumping drilling along the direction I-I of super high seam separate zone production shown in FIG. 1.
Appended drawing reference: division working face 3, stope drift active workings 4, high negative pressure are adopted to exploiting field section 1, neighbouring upper exploitation section 2, end
Extraction pipeline 5, lower negative pressure extraction pipeline 6, each division working face 7 that underlies, concordant drilling 8, first division working face 9, air return lane 10,
Multi-segment shares large diameter borehole 11.
Specific embodiment
Below in conjunction with attached drawing, a preferred embodiment of the present invention will be described in detail.
As depicted in figs. 1 and 2, the present embodiment provides a kind of gas pumping methods of super high seam separate zone production, including with
Lower step:
S1. it is stayed to coal column between exploiting field section 1 and neighbouring upper exploitation section 2 and sets width as 10m, be layered using super high seam
The stope drift active workings 4 that division working face 3 is adopted at the end of the neighbouring upper exploitation section 2 to exploiting field section 1 of exploitation carry out gob side entry retaining, adopt
With frame canopy formula I-steel to gob side entry retaining tunnel strengthening supporting, and close to end adopt at the top of 3 side of division working face and tunnel into
Row grouting and reinforcing prevents from being connected with goaf；Laying is connected with high negative pressure extraction system in the gob side entry retaining tunnel of formation
High negative pressure extraction pipeline 5, and it is connected with the lower negative pressure extraction pipeline 6 of lower negative pressure extraction system；
S2. along gob side entry retaining tunnel close to exploiting field section 1 side lane side to exploiting field section 1 each stratified operation that underlies
Face 7 is constructed several concordants drillings 8 being spaced apart, and the aperture of concordant drilling 8 is φ 113mm, and whole hole point is located at first stratified operation
Below the bottom plate in face 9 at 3m, the spacing of two neighboring concordant drilling 8 is 10m；Sealing of hole, sealing of hole are carried out to concordant drilling 8 after the completion
Depth coal column concentrated stress calculated according to the physical parameter of gob side entry retaining region coal petrography influence sector width and determine, the present embodiment
In, the depth of sealing of hole and the coal column concentrated stress zone of influence are of same size, are not less than 15m, and in the coal column concentrated stress zone of influence
Guard aperture is carried out using high-intensitive flexible PEC guard aperture pipe；Concordant drilling 8 and the high negative pressure drainage tube laid in gob side entry retaining tunnel
Road 5 overlaps；
S3. along gob side entry retaining tunnel close to exploiting field section 1 side lane side to exploiting field section 1 first division working face 9
The multi-segment that is spaced apart of several groups of constructing of air return lane 10 share large diameter borehole 11, first using Φ 94mm drill bit cooperation 6
The guide rod construction guidance hole of root Φ 73mm*800mm, then using reaming bit, reaming forms more points to φ 500mm step by step
The shared large diameter borehole 11 of layer, multi-segment shares large diameter borehole 11 and is equipped with control valve, for gas drainage parameter
It is precisely controlled；2 multi-segments share large diameter borehole 11 between the shared large diameter borehole 11 of multi-segment in one group, each group
Away from for 2m, the spacing that the multi-segment between each group shares large diameter borehole 11 is 30m；Multi-segment shares large diameter borehole 11
Tapping point is located at gob side entry retaining lane side at gob side entry retaining roadway floor 2.6m, and whole hole point is located at returning for first division working face 9
10 lane side of air way is at 10 roadway floor 0.2m of air return lane；It is shared in large diameter borehole 11 after completion to multi-segment and transfers material
For the casing of high tensile steel tube, casing inner diameter is φ 300mm, and each section casing length is 1m, uses band iron+bolt between casing
It is attached, is transferred using chain block cooperation rope traction when decentralization；Complete opening section slip casting envelope is carried out after transferring casing
Hole, and the lower negative pressure extraction pipeline 6 by laying in each branched pipe and gob side entry retaining tunnel overlaps；
S4. before 9 back production of first division working face for treating exploiting field section 1, gas pre-drainage is carried out using concordant drilling 8；
S5. during 9 back production of first division working face for treating exploiting field section 1, pressure relief gas pumping is carried out using concordant drilling 8
It adopts；
S6. during the first division working face 9 and each 7 back production of division working face of underliing for treating exploiting field section 1, the every warp of working face
Cross one group of multi-segment share large diameter borehole 11 up to 3m apart from when, the switch for opening each branched pipe carries out goaf gas pumping
It adopts；
S7. during the first division working face 9 and each 7 back production of division working face of underliing for treating exploiting field section 1, the every warp of working face
It crosses one group of multi-segment and shares large diameter borehole 11 up to the distance of 35m and after stopping goaf gas extraction, multi-segment shares big straight
Diameter drilling 11 injects nitrogen to goaf, is used for goaf fire extinguishing as note nitrogen drilling access mine nitrogen-filling system.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of the technical program, should all be covered in the present invention
Scope of the claims in.
Claims (9)
1. a kind of gas pumping method of super high seam separate zone production, which comprises the following steps:
S1. the back production of division working face is adopted using the end of the neighbouring upper exploitation section to exploiting field section of super high seam separate zone production
Tunnel carries out gob side entry retaining and strengthening supporting, and laying is connected with the height of high negative pressure extraction system in the gob side entry retaining tunnel of formation
Negative pressure extraction pipeline, and it is connected with the lower negative pressure extraction pipeline of lower negative pressure extraction system；
S2. along gob side entry retaining tunnel close to exploiting field section side lane side to exploiting field section each stratified operation surface construction that underlies
Several concordant drillings being spaced apart, drill to concordant carry out sealing of hole after the completion, and bear with the height laid in gob side entry retaining tunnel
Press extraction pipe lap；
S3. along gob side entry retaining tunnel close to exploiting field section side lane side to exploiting field section first division working face air return lane
The multi-segment that construction several groups are spaced apart shares large diameter borehole, shares after completion to multi-segment and transfers set in large diameter borehole
Pipe carries out complete opening section injection hole sealing, and the lower negative pressure extraction pipe lap by laying in each branched pipe and gob side entry retaining tunnel；
S4. it before the first division working face back production for treating exploiting field section, is drilled using concordant and carries out gas pre-drainage；
S5. it during the first division working face back production for treating exploiting field section, is drilled using concordant and carries out pressure relief gas pumping mining；
S6. during the first division working face and each division working face back production of underliing for treating exploiting field section, working face is every to pass through one group
Multi-segment shares large diameter borehole certain distance, and the switch for opening each branched pipe carries out goaf gas extraction；
S7. during the first division working face and each division working face back production of underliing for treating exploiting field section, working face is every to pass through one group
After multi-segment shares large diameter borehole certain distance and stops goaf gas extraction, multi-segment shares large diameter borehole as note
Nitrogen drilling access mine nitrogen-filling system, injects nitrogen to goaf, is used for goaf fire extinguishing.
2. the gas pumping method of super high seam separate zone production as described in claim 1, which is characterized in that in the step S1
It is stayed to coal column between exploiting field section and neighbouring upper exploitation section and sets width as 6~15m, using frame canopy formula I-steel, U-shaped steel or soft
Mould supporting adds to gob side entry retaining tunnel strengthening supporting, and adopting progress slip casting at the top of division working face side and tunnel close to end
Gu preventing from being connected with goaf.
3. the gas pumping method of super high seam separate zone production as described in claim 1, which is characterized in that in the step S2
The concordant boring aperture of construction is φ 93mm or φ 113mm, and whole hole point is located at below the bottom plate of first division working face at 3~5m,
The spacing of two neighboring concordant drilling is 10~15m.
4. the gas pumping method of super high seam separate zone production as claimed in claim 2, which is characterized in that in the step S2
The concordant drilling of construction carries out the depth of sealing of hole, calculates coal column concentrated stress shadow according to the physical parameter of gob side entry retaining region coal petrography
Sector width is rung to determine, the depth of sealing of hole is not less than 15m, and in the coal column concentrated stress zone of influence using high-intensitive flexibility
PEC guard aperture pipe carries out guard aperture.
5. the gas pumping method of super high seam separate zone production as described in claim 1, which is characterized in that the step S3 packet
The guide rod construction guidance hole for cooperating 6 Φ 73mm*800mm using Φ 94mm drill bit first is included, reaming bit is then used
Reaming forms multi-segment and shares large diameter borehole to φ 500mm step by step；It is one group that 2~3 multi-segments, which share large diameter borehole,
The spacing that multi-segment in each group shares large diameter borehole is 2m, and the multi-segment between each group shares between large diameter borehole
Away from for 30~50m.
6. the gas pumping method of super high seam separate zone production as described in claim 1, which is characterized in that in the step S3
The multi-segment of construction shares large diameter borehole, tapping point be located at gob side entry retaining lane side apart from gob side entry retaining roadway floor 2.6~
At 2.8m, whole hole point is located at the return air lane of first division working face at 0.2~0.5m of air return lane roadway floor.
7. the gas pumping method of super high seam separate zone production as described in claim 1, which is characterized in that in the step S3
It is high tensile steel tube in the material that multi-segment shares the casing transferred in large diameter borehole, casing inner diameter is φ 300mm~φ
350mm, each section casing length are 1~1.5m, are attached between casing using band iron+bolt, using pulling calabash when decentralization
Lu Peihe rope traction is transferred.
8. the gas pumping method of super high seam separate zone production as described in claim 1, which is characterized in that in the step S3
The multi-segment of construction shares large diameter borehole and is equipped with control valve, for being precisely controlled to gas drainage parameter.
9. the gas pumping method of super high seam separate zone production as described in claim 1, which is characterized in that in the step S6
When carrying out goaf gas extraction, the distance that the passed through multi-segment of working face shares large diameter borehole is 3~5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910919083.7A CN110486079B (en) | 2019-09-26 | 2019-09-26 | Gas extraction method for layered mining of ultra-thick coal seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910919083.7A CN110486079B (en) | 2019-09-26 | 2019-09-26 | Gas extraction method for layered mining of ultra-thick coal seam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110486079A true CN110486079A (en) | 2019-11-22 |
| CN110486079B CN110486079B (en) | 2020-11-06 |
Family
ID=68544261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910919083.7A Active CN110486079B (en) | 2019-09-26 | 2019-09-26 | Gas extraction method for layered mining of ultra-thick coal seam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110486079B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965964A (en) * | 2019-12-16 | 2020-04-07 | 临沂矿业集团菏泽煤电有限公司 | Gas extraction method for ultra-thick coal seam |
| CN111577282A (en) * | 2020-05-26 | 2020-08-25 | 内蒙古福城矿业有限公司 | High-low negative pressure separate source coal mine gas drainage process |
| CN112012782A (en) * | 2020-07-15 | 2020-12-01 | 陕西麟北煤业开发有限责任公司 | Advanced closed area gas prevention and control technology for air inlet and return roadway of fully mechanized caving face |
| CN114562232A (en) * | 2022-01-24 | 2022-05-31 | 中国矿业大学 | Stepped large-diameter drill hole pressure relief and permeability increase gas extraction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1469029A (en) * | 2002-07-19 | 2004-01-21 | 罗崇福 | Coal cutting method for inclined thick and very thick coal bed |
| CN103670496A (en) * | 2013-12-12 | 2014-03-26 | 中国矿业大学 | Gob-side entry retaining and sectional coal seam gas pre-extracting method for single low-permeability outburst coal seam |
| CN106939789A (en) * | 2017-03-20 | 2017-07-11 | 中国神华能源股份有限公司 | A kind of separate zone production technique that separate zone production is carried out to super high seam |
| CN108798758A (en) * | 2017-04-28 | 2018-11-13 | 煤科集团沈阳研究院有限公司 | Along top major diameter concordant hole pumping and mining goaf and gas at upper corner technique |
| CN109026132A (en) * | 2018-09-07 | 2018-12-18 | 永城煤电控股集团有限公司 | Coal mine single coal bed protective layer release transmission increasing concordant extraction anti-burst method |
-
2019
- 2019-09-26 CN CN201910919083.7A patent/CN110486079B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1469029A (en) * | 2002-07-19 | 2004-01-21 | 罗崇福 | Coal cutting method for inclined thick and very thick coal bed |
| CN103670496A (en) * | 2013-12-12 | 2014-03-26 | 中国矿业大学 | Gob-side entry retaining and sectional coal seam gas pre-extracting method for single low-permeability outburst coal seam |
| CN106939789A (en) * | 2017-03-20 | 2017-07-11 | 中国神华能源股份有限公司 | A kind of separate zone production technique that separate zone production is carried out to super high seam |
| CN108798758A (en) * | 2017-04-28 | 2018-11-13 | 煤科集团沈阳研究院有限公司 | Along top major diameter concordant hole pumping and mining goaf and gas at upper corner technique |
| CN109026132A (en) * | 2018-09-07 | 2018-12-18 | 永城煤电控股集团有限公司 | Coal mine single coal bed protective layer release transmission increasing concordant extraction anti-burst method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965964A (en) * | 2019-12-16 | 2020-04-07 | 临沂矿业集团菏泽煤电有限公司 | Gas extraction method for ultra-thick coal seam |
| CN110965964B (en) * | 2019-12-16 | 2021-10-12 | 临沂矿业集团菏泽煤电有限公司 | Gas extraction method for ultra-thick coal seam |
| CN111577282A (en) * | 2020-05-26 | 2020-08-25 | 内蒙古福城矿业有限公司 | High-low negative pressure separate source coal mine gas drainage process |
| CN112012782A (en) * | 2020-07-15 | 2020-12-01 | 陕西麟北煤业开发有限责任公司 | Advanced closed area gas prevention and control technology for air inlet and return roadway of fully mechanized caving face |
| CN114562232A (en) * | 2022-01-24 | 2022-05-31 | 中国矿业大学 | Stepped large-diameter drill hole pressure relief and permeability increase gas extraction method |
| CN114562232B (en) * | 2022-01-24 | 2022-10-18 | 中国矿业大学 | Stepped large-diameter drill hole pressure relief and permeability increase gas extraction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110486079B (en) | 2020-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110486079A (en) | A kind of gas pumping method of super high seam separate zone production | |
| CN106907175B (en) | The efficient extraction coal roadway stripe gas of bottom plate concordant long drilled holes staged fracturing and region outburst elimination method | |
| CN106285477B (en) | Underground coal mine adopt gas pumping top plate face upward wear layer orientation hole construction method | |
| WO2018171255A1 (en) | Networked preferential gas migration passage construction and gas diversion drainage method | |
| CN103161480B (en) | Initiatively support the method for roadside packing gob side entry retaining | |
| CN106223967B (en) | A kind of great burying rectangle or class rectangle tunneling shield constructing device and method | |
| CN110529151A (en) | A kind of fully mechanized workface Grading And Zoning integrative consolidation passing sunk pillars on full method | |
| CN105351001B (en) | A kind of method based on gob side entry retaining region reinforcement gas pumping | |
| CN101832149A (en) | Method for extracting coal seam gas by underground heat injection | |
| CN104775819A (en) | Deep inclined coal seam mining roadway mine pressure control mining method | |
| CN212296427U (en) | Double-lane arrangement working face outer lane narrow coal pillar stable supporting structure | |
| CN104763434A (en) | Non-coal-pillar double tunneling method | |
| CN109403986A (en) | The synchronous enlarging of the parallel heading of TBM tunneling construction is the construction method of double line tunnel | |
| CN112302704A (en) | Coal face fissure zone gas extraction method | |
| CN110306984A (en) | A kind of baseboard of coal mine roadway type Controlling of Coal Outburst method | |
| CN107503790B (en) | Fast extraction fully mechanized coal face comprehensive gas drainage arranges administering method | |
| CN104594943A (en) | Ground composite L-shaped drilling well for gas control and gas control method | |
| CN101915099A (en) | Bidirectional U-shaped coal-mining method of thick coal bed by gateway layout along stability layer | |
| CN112554888B (en) | Pressure relief-reinforcement cooperative maintenance method for roadway under boundary coal pillar | |
| CN207080226U (en) | A kind of steeply inclined thin is to the flat ore removal structure of middle strong vein | |
| CN210919066U (en) | Fully mechanized caving face coal top down integrated tunneling device | |
| CN106761742A (en) | A kind of deep island working face gob side entry driving surrounding rock stability control method | |
| CN213269850U (en) | Directional long-drill-hole cross-layer gas extraction system | |
| CN107448201A (en) | A kind of steeply inclined thin is to the flat ore removal structure of middle strong vein and method | |
| CN210049927U (en) | Connecting structure of gas extraction pipeline of lower adjacent layer of directional long drill hole with floor penetrating layer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |