CN106285770A - A kind of working seam base plate mud stone is as the method for protective layer increase the most projecting coal bed group breathability - Google Patents
A kind of working seam base plate mud stone is as the method for protective layer increase the most projecting coal bed group breathability Download PDFInfo
- Publication number
- CN106285770A CN106285770A CN201610842495.1A CN201610842495A CN106285770A CN 106285770 A CN106285770 A CN 106285770A CN 201610842495 A CN201610842495 A CN 201610842495A CN 106285770 A CN106285770 A CN 106285770A
- Authority
- CN
- China
- Prior art keywords
- mud stone
- work surface
- coal bed
- projecting coal
- layer
- 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
- 239000004575 stone Substances 0.000 title claims abstract description 69
- 239000003245 coal Substances 0.000 title claims abstract description 60
- 239000011241 protective layer Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000005065 mining Methods 0.000 claims abstract description 27
- 239000011435 rock Substances 0.000 claims abstract description 19
- 239000010410 layer Substances 0.000 claims abstract description 17
- 238000005553 drilling Methods 0.000 claims abstract description 13
- 238000000605 extraction Methods 0.000 claims abstract description 13
- 238000009423 ventilation Methods 0.000 claims abstract 2
- 231100001261 hazardous Toxicity 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000008033 biological extinction Effects 0.000 description 5
- 230000035699 permeability Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000003667 anti-reflective effect Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000001028 reflection method Methods 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000009738 saturating 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
- 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)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The present invention discloses a kind of working seam floor rock method as protective layer increase the most projecting coal bed group breathability.The method is under unprotected layer mining conditions; utilize the weak mud stone of projecting coal bed base plate suitable layers position as protective layer; use supporting fully-mechanized mining equipment exploitation mud stone; artificial in space, projecting coal bed board structure goaf; force projecting coal bed and roof and floor deformation, expansion, increase projecting coal bed breathability.Between adjacent two mud stone work surfaces, inabundant distressed zone, uses fan-shaped layer-through drilling Gas pre-drainage.Mud stone protective layer work surface uses descentional ventilation, uses gob side entry retaining, races against time for fan-shaped layer-through drilling mash gas extraction, and face-airing mode uses Y type to ventilate.During protected mining of closed distance coal seam group, take mining sequence from top to bottom, after protected seam (1) at least exploits two sections, then exploit protected seam (2).
Description
Technical field
The present invention relates to mine gas prevention and control technical field, it is adaptable to protective coat extracted projecting coal bed group technical method.
Background technology
Exploitation protective layer is the measure that pre-Anti-protrusion is most effective, most economical.The coal seam group possessing protective coat extracted condition is excellent
First use protective layer protrusion-dispelling, have become as the basic skills of China's mine gas prevention and control.In a lot of mining area of China, there is coal seam group
Mining conditions, but each minable coal seam is often respectively provided with outburst hazard.Common practice be in coal seam group suitably certain
Rock stratum is arranged rock gangway, uses layer-through drilling to take out in advance, after the extinction of region, arrange heading, then arrange concordant hole pumping and mining watt
This carries out extinction.But the projecting coal bed breathability in China's major part mining area is the lowest, either wears layer in such coal seam
Boring or concordant boring, its radius of influence is the least, and boring effective coverage range is little, and required drilling hole amount is huge.For realizing
The continuous extinction of protected seam stage, generally requires and arranges tunnel, rock stratum continuously in suitable rock stratum.Under the conditions of projecting coal bed group, at present
In the gas control engineering used, it is faced with or is that borehole engineering amount is big, or be the problem that rock tunnel engineering amount is big.Even if such as
This, under unprotect layer mining conditions, needed for the boring in low air permeability coal seam realizes extinction, the extraction time is the longest, is unfavorable for
What coal mine excavation was taken over is smoothed out.
In order to improve low air permeability coal seam group's permeability, part mine has attempted Deephole pre-splitting blasting, hydraulic flushing in hole, waterpower
Anti-reflection method is forced in pressure break, boring slot, carbon dioxide air blasting presplitting etc., achieves preferable effect.But anti-reflection scope is relative
Less, and need the extra input increasing man power and material.Therefore, research safety efficiently on a large scale region anti-reflection be still prominent
The main contents of coal output layer group exploitation.
Summary of the invention
For realizing the raising of coal seam group breathability under unprotect layer mining conditions, accelerate gas pumping efficiency, it is achieved prominent
Coal seam group rapidly and efficiently extinction, it is the most projecting coal bed as protective layer increase that the present invention proposes a kind of working seam floor rock
The method of group's breathability.
A kind of working seam base plate mud stone is as the method for protective layer increase the most projecting coal bed group breathability, its principle
It is under unprotected layer mining conditions, utilizes the weak mud stone of projecting coal bed base plate suitable layers position to join as protective layer, employing
The fully-mechanized mining equipment exploitation mud stone of set, artificially in space, projecting coal bed board structure goaf, forces projecting coal bed and roof and floor
Deformation, expansion, increase projecting coal bed breathability.It specifically comprises the following steps that
1) use Equivalent Materials Testing and theory analysis, analyze exploitation mud stone thickness and caving zone height, fissure zone
Highly, the relation between the parameter such as release angle of incline direction up-and-down boundary, determine suitable mud stone working thickness.
2) according to the release angle of exploitation mud stone and projecting coal bed outburst dangerous area is counter with border, non-protruding hazardous area pushes away, determine
Head adopts the upper air way position of mud stone work surface (1), determines the length of adopting of mud stone work surface (1) according to supporting fully-mechanized mining equipment ability, and
Determine position, mud stone work surface (1) machine lane.Do not stay rock pillar, determine next section mud stone work surface (2) machine lane by same length
Position.
3) driving mud stone work surface (1) machine lane, air way and eye of ingressing, mud stone work surface (2) machine lane and eye of ingressing.
4) arrange coal road in protected seam non-protruding hazardous area, in coal road, arrange concordant boring, extraction outburst dangerous area
Gas.
5) at mud stone work surface (1) machine lane and the fan-shaped layer-through drilling of mud stone work surface (2) machine lane construction, extraction protected seam
Gas.
6) exploitation mud stone work surface (1), mud stone work surface (1) gob side entry retaining, mud stone work surface (1) uses descending Y type to lead to
Wind mode, it is ensured that during mud stone work surface (1) exploitation, layer-through drilling extraction continues mash gas extraction.
7) by same gateway layout method, ladder advances, and utilizes exploitation rock, forms protective coat extracted, increases and protected
Protect projecting coal bed breathability, utilize concordant hole pumping and mining protected seam gas.
When implementing by above-mentioned steps, as the weak shale layer of protective layer, apart from projecting coal bed distance controlling 13～80m
In the range of, to improve antireflective effect during protective coat extracted.
For distressed zone inabundant between adjacent two mud stone work surfaces, due to rock protective coat extracted effect, it is breathed freely
Property also increase, use fan-shaped layer-through drilling to take out in advance.
During protected mining of closed distance coal seam group, mining sequence from top to bottom, protected seam (1) is taked at least to exploit
After two sections, then exploit protected seam (2).
The present invention utilizes the weak mud stone of exploitation as protective layer, compared with tradition anti-reflection method, the most too much increases rock
Tunnel, but it is greatly saved borehole engineering amount, more importantly protected seam antireflective effect is good, and gas control efficiency is high, accelerates
Projecting coal bed excavation replacement, provides feasible method for realizing projecting coal bed group's safety and high efficiency.
Accompanying drawing explanation
Fig. 1 is a kind of working seam floor rock to be shown as the method for protective layer increase the most projecting coal bed group breathability
It is intended to.
Label in figure: release border on 1 rock protective layer, 2 protected seams (21) non-protruding hazardous area coal road, 3
Protected seam (11) non-protruding hazardous area coal road, 4 boundary lines, outburst dangerous area, 5 protected seam work surfaces (11), 6 quilts
Release border under protective layer work surface (21), 7 rock protective layers, 8 fan-shaped layer-through drillings, 9 mud stone work surfaces (1) are enterprising
Air intake lane/gob side entry retaining under air way, 10 mud stone work surfaces (1), 11 mud stone work surfaces (1), 12 mud stone work surfaces (2),
Air intake lane under 13 mud stone work surface (1) return airways/mud stone work surface (2), 14 mud stone work surfaces (3), 15 shale layers,
16 protected seams (2), 17 protected seams (1).
Detailed description of the invention
As it is shown in figure 1, a kind of working seam floor rock is as protective layer increase the most projecting coal bed group breathability
Method is under unprotected layer mining conditions, utilizes the weak mud stone of projecting coal bed base plate suitable layers position as protective layer, adopts
With supporting fully-mechanized mining equipment exploitation mud stone, artificially in space, projecting coal bed board structure goaf, force projecting coal bed and top
Bottom deformation, expansion, increase projecting coal bed breathability.It specifically comprises the following steps that
1) use Equivalent Materials Testing and theory analysis, analyze exploitation mud stone thickness and caving zone height, fissure zone
Highly, the relation between the parameter such as release angle of incline direction up-and-down boundary, determine suitable mud stone working thickness.
2) according to the release angle of exploitation mud stone and projecting coal bed outburst dangerous area is counter with border, non-protruding hazardous area pushes away, determine
Head adopts the upper air way position of mud stone work surface (1), determines the length of adopting of mud stone work surface (1) according to supporting fully-mechanized mining equipment ability, and
Determine position, mud stone work surface (1) machine lane.Do not stay rock pillar, determine next section mud stone work surface (2) machine lane by same length
Position.
3) driving mud stone work surface (1) machine lane, air way and eye of ingressing, mud stone work surface (2) machine lane and eye of ingressing.
4) arrange coal road in protected seam non-protruding hazardous area, in coal road, arrange concordant boring, extraction outburst dangerous area
Gas.
5) at mud stone work surface (1) machine lane and the fan-shaped layer-through drilling of mud stone work surface (2) machine lane construction, extraction protected seam
Gas.
6) exploitation mud stone work surface (1), mud stone work surface (1) gob side entry retaining, mud stone work surface (1) uses descending Y type to lead to
Wind mode, it is ensured that during mud stone work surface (1) exploitation, layer-through drilling extraction continues mash gas extraction.
7) by same gateway layout method, ladder advances, and utilizes exploitation rock, forms protective coat extracted, increases and protected
Protect projecting coal bed breathability, utilize concordant hole pumping and mining protected seam gas.
During protected mining of closed distance coal seam group, mining sequence from top to bottom, protected seam (1) is taked at least to exploit
After two sections, then exploit protected seam (2).
Claims (4)
1. working seam base plate mud stone exists as a method for protective layer increase the most projecting coal bed group breathability, its feature
Under unprotected layer mining conditions, utilize the weak mud stone of projecting coal bed base plate suitable layers position as protective layer, use supporting
Fully-mechanized mining equipment exploitation mud stone, artificially in space, projecting coal bed board structure goaf, force projecting coal bed and roof and floor to become
Shape, expansion, increase projecting coal bed breathability；It specifically comprises the following steps that
1) use Equivalent Materials Testing and theory analysis, analyze exploitation mud stone thickness and caving zone height, fissure zone height,
Relation between the parameters such as the release angle of incline direction up-and-down boundary, determines suitable mud stone working thickness.
2) according to the exploitation release angle of mud stone and projecting coal bed outburst dangerous area and non-protruding hazardous area boundary position, counter push away really
Determine head and adopt the upper air way position of mud stone work surface (1), adopt length according to what supporting fully-mechanized mining equipment ability determined mud stone work surface (1),
And determine position, mud stone work surface (1) machine lane.Do not stay rock pillar, determine next section mud stone work surface (2) machine by same length
Position, lane.
3) driving mud stone work surface (1) machine lane, air way and eye of ingressing, mud stone work surface (2) machine lane and eye of ingressing.
4) arrange coal road in protected seam non-protruding hazardous area, in coal road, arrange concordant boring, extraction outburst dangerous area gas.
5) at mud stone work surface (1) machine lane and the fan-shaped layer-through drilling of mud stone work surface (2) machine lane construction, extraction protected seam watt
This.
6) exploitation mud stone work surface (1), mud stone work surface (1) gob side entry retaining, mud stone work surface (1) uses descending Y type ventilation side
Formula, it is ensured that during mud stone work surface (1) exploitation, layer-through drilling continues mash gas extraction.
7) by same gateway layout method, ladder advances, and utilizes exploitation rock, forms protective coat extracted, increases by protection prominent
Coal output layer breathability, utilizes concordant hole pumping and mining protected seam gas.
2., according to the weak shale layer as protective layer described in claims 1, it is 13～80m apart from projecting coal bed distance.
3. penetrating protected coal seam group according to the fan-shaped layer-through drilling described in claims 1, boring overlay area is adjacent two
Inabundant distressed zone between individual mud stone work surface.
4., when exploiting according to the closely protected seam described in claims 1, take mining sequence from top to bottom, protected
After layer (1) at least exploits two sections, then exploit protected seam (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610842495.1A CN106285770B (en) | 2016-09-22 | 2016-09-22 | A kind of method that working seam bottom plate mud stone increases closely projecting coal bed group's gas permeability as protective layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610842495.1A CN106285770B (en) | 2016-09-22 | 2016-09-22 | A kind of method that working seam bottom plate mud stone increases closely projecting coal bed group's gas permeability as protective layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106285770A true CN106285770A (en) | 2017-01-04 |
| CN106285770B CN106285770B (en) | 2018-08-24 |
Family
ID=57712443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610842495.1A Active CN106285770B (en) | 2016-09-22 | 2016-09-22 | A kind of method that working seam bottom plate mud stone increases closely projecting coal bed group's gas permeability as protective layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106285770B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899105A (en) * | 2017-12-07 | 2019-06-18 | 陇东学院 | A kind of multistage crossing-hole gas extraction method of low level for coal petrography alternating layers coal seam |
| CN112031857A (en) * | 2020-09-27 | 2020-12-04 | 中国矿业大学(北京) | Method for reinforcing gas extraction by combining drilling, blasting and pressure relief of rock roadway of bottom plate |
| CN114370251A (en) * | 2022-01-14 | 2022-04-19 | 安徽理工大学 | Directional grading and zoning grouting method for overburden bed separation during downward mining of coal seam group |
| CN114575791A (en) * | 2022-03-02 | 2022-06-03 | 淮南矿业(集团)有限责任公司 | Structure and process for extracting gas of lower protective layer through high-position high-extraction roadway and downward drilling |
| CN115288638A (en) * | 2022-06-30 | 2022-11-04 | 河南理工大学 | Method for extracting slope-adjusting gas from staggered working face mined by non-uniform sinking protective layer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3934649A (en) * | 1974-07-25 | 1976-01-27 | The United States Of America As Represented By The United States Energy Research And Development Administration | Method for removal of methane from coalbeds |
| SU1283424A1 (en) * | 1985-07-22 | 1987-01-15 | Производственное Объединение "Южкузбассуголь" | Method of controlling gas emission |
| CN101275469A (en) * | 2008-05-12 | 2008-10-01 | 淮南矿业(集团)有限责任公司 | Yolk coal rock formation downward hole pumping and mining pressure relief mash gas construction method |
| CN101644166A (en) * | 2009-07-14 | 2010-02-10 | 中国矿业大学 | Method for extracting gas from high gas low permeability coal seam by punching, slotting, pressure releasing, and permeability increasing |
| CN103758560A (en) * | 2014-01-14 | 2014-04-30 | 中国矿业大学 | Method for gas treatment in multiple progressive protection seam grouping regions |
| CN104847401A (en) * | 2015-04-30 | 2015-08-19 | 贵州盘江精煤股份有限公司 | Regional coal and gas outburst coal seam coal face outburst preventing and controlling method |
| CN105507903A (en) * | 2015-12-15 | 2016-04-20 | 中国矿业大学 | Coal-rock simultaneous production protecting seam and protected seam collaborative mining method |
-
2016
- 2016-09-22 CN CN201610842495.1A patent/CN106285770B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3934649A (en) * | 1974-07-25 | 1976-01-27 | The United States Of America As Represented By The United States Energy Research And Development Administration | Method for removal of methane from coalbeds |
| SU1283424A1 (en) * | 1985-07-22 | 1987-01-15 | Производственное Объединение "Южкузбассуголь" | Method of controlling gas emission |
| CN101275469A (en) * | 2008-05-12 | 2008-10-01 | 淮南矿业(集团)有限责任公司 | Yolk coal rock formation downward hole pumping and mining pressure relief mash gas construction method |
| CN101644166A (en) * | 2009-07-14 | 2010-02-10 | 中国矿业大学 | Method for extracting gas from high gas low permeability coal seam by punching, slotting, pressure releasing, and permeability increasing |
| CN103758560A (en) * | 2014-01-14 | 2014-04-30 | 中国矿业大学 | Method for gas treatment in multiple progressive protection seam grouping regions |
| CN104847401A (en) * | 2015-04-30 | 2015-08-19 | 贵州盘江精煤股份有限公司 | Regional coal and gas outburst coal seam coal face outburst preventing and controlling method |
| CN105507903A (en) * | 2015-12-15 | 2016-04-20 | 中国矿业大学 | Coal-rock simultaneous production protecting seam and protected seam collaborative mining method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899105A (en) * | 2017-12-07 | 2019-06-18 | 陇东学院 | A kind of multistage crossing-hole gas extraction method of low level for coal petrography alternating layers coal seam |
| CN112031857A (en) * | 2020-09-27 | 2020-12-04 | 中国矿业大学(北京) | Method for reinforcing gas extraction by combining drilling, blasting and pressure relief of rock roadway of bottom plate |
| CN114370251A (en) * | 2022-01-14 | 2022-04-19 | 安徽理工大学 | Directional grading and zoning grouting method for overburden bed separation during downward mining of coal seam group |
| CN114370251B (en) * | 2022-01-14 | 2023-08-18 | 安徽理工大学 | Coal seam group downstream mining overlying strata separation layer directional grading zonal grouting method |
| CN114575791A (en) * | 2022-03-02 | 2022-06-03 | 淮南矿业(集团)有限责任公司 | Structure and process for extracting gas of lower protective layer through high-position high-extraction roadway and downward drilling |
| CN114575791B (en) * | 2022-03-02 | 2024-04-16 | 淮南矿业(集团)有限责任公司 | Structure and process for extracting gas from lower protective layer of high-level high-drainage roadway and downward drilling hole |
| CN115288638A (en) * | 2022-06-30 | 2022-11-04 | 河南理工大学 | Method for extracting slope-adjusting gas from staggered working face mined by non-uniform sinking protective layer |
| CN115288638B (en) * | 2022-06-30 | 2023-05-30 | 河南理工大学 | Inclination adjustment gas extraction method for mining staggered-layer working face of non-uniform sinking protection layer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106285770B (en) | 2018-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106223998B (en) | Rock protective layer face gas administering method under a kind of closely tight roof | |
| CN106285770A (en) | A kind of working seam base plate mud stone is as the method for protective layer increase the most projecting coal bed group breathability | |
| CN104847355B (en) | Continuous mining method for hollow ground of medium-thickness steeply inclined ore body | |
| CN104594899A (en) | Method for determining reasonable width of gob-side entrydriving narrow coal pillar | |
| CN103557000B (en) | Method for preventing gob-side entry rock burst through side-drawing filling | |
| CN111828007B (en) | Stoping method for residual studs in underground mine goaf | |
| CN100580219C (en) | Underground no pillar recovery method of coal mine | |
| CN101737047A (en) | Method for mining coal of steeply inclined thin seam | |
| CN107740707A (en) | Thick coal-layer mining water damage prevention and controls under a kind of deep high artesian | |
| CN110067592B (en) | Roof gas cooperative control method based on hard roof ground fracturing | |
| CN105626071A (en) | Mining method for gently inclined thin ore body | |
| CN108343418B (en) | Method for controlling mining influence range from surface directional hydraulic fracturing pre-cracked bedrock | |
| CN108397227A (en) | A kind of progressive extinction roadway layout method of tendency | |
| CN102777180A (en) | Method for actively and regionally preventing and controlling rock burst in coal mines | |
| CN105927269A (en) | Gas control method of outburst coal seam | |
| CN108843354A (en) | A kind of inclined super high seam lane top asymmetric anchor stalk method for protecting support of gob side entry driving | |
| CN113756809B (en) | Load migration impact mine pressure prevention and control method for ground fracturing thick and hard rock stratum | |
| CN107152279A (en) | Wangeviry stope top plate hydraulic fracturing method for weakening and device | |
| CN105239964A (en) | Protective coal seam decompressing ground and underground three-dimensional coal and coal seam gas coordinated development method | |
| CN106761902A (en) | A kind of stereo synthesis pressure relief gas pumping mining method suitable for soft rock protective coat extracted | |
| CN107829741A (en) | Mining method of gently inclined thin ore body | |
| CN104088638A (en) | Steep coal seam long-wall large-mining height workface coal wall caving and roof caving control technique | |
| CN105927232A (en) | Deep-blocking and shallow-grouting grouting method for no-blank area of mine and grouting safety protecting device | |
| CN105909284A (en) | Sloughing prevention and control method for large mining height coal wall | |
| WO2021031561A1 (en) | Tunneling-free and coal pillar-free mining and construction method wherein coal mine field is not divided into mining areas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |