CN107178388A - Pressure coal gas device is taken out in heading pulse - Google Patents
Pressure coal gas device is taken out in heading pulse Download PDFInfo
- Publication number
- CN107178388A CN107178388A CN201710468999.6A CN201710468999A CN107178388A CN 107178388 A CN107178388 A CN 107178388A CN 201710468999 A CN201710468999 A CN 201710468999A CN 107178388 A CN107178388 A CN 107178388A
- Authority
- CN
- China
- Prior art keywords
- gas
- pulse
- coal
- suction pump
- coal seam
- 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.)
- Pending
Links
- 239000003034 coal gas Substances 0.000 title claims abstract description 10
- 239000003245 coal Substances 0.000 claims abstract description 56
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000005553 drilling Methods 0.000 claims abstract description 15
- 238000007599 discharging Methods 0.000 claims abstract description 12
- 230000006835 compression Effects 0.000 claims abstract description 11
- 238000007906 compression Methods 0.000 claims abstract description 11
- 230000035699 permeability Effects 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 230000035939 shock Effects 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims 1
- 238000011017 operating method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 58
- 238000000605 extraction Methods 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000003795 desorption Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002929 anti-fatigue Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- 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)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
Pressure coal gas device two parts composition is taken out in heading pulse：A part is by drainage system by firedamp taking-out discharging drilling, pulse gas suction pump, delivery pipe composition；Another part pulse compression system is by firedamp taking-out discharging drilling, pulse tube, pulse gas compression pump composition.When choosing this coal seam digging laneway specified, the present apparatus is installed according to the position set in advance in advance, the firedamp taking-out discharging drilling of outermost row installs pulse gas suction pump, delivery pipe；Middle firedamp taking-out discharging drilling installs pulse gas suction pump, delivery pipe；The collective effect of pulse compression gas pump and pulse gas suction pump, carries out taking out and pressing to the gas in coal seam, the loop of one-in-and-one-out is internally formed in coal seam, strengthens the gas permeability of coal body.
Description
Technical field
Pressure coal gas is taken out the present invention relates to a kind of anti-reflection pulse taken out and pressed of promotion coal body of heading driving
Device, and in particular to promote a kind of anti-reflection device of coal body during this coal seam Gas pre-drainage of underground coal mine, the invention belongs to colliery
Security fields.
Background technology
Account for more than the 95% of coal mine in China's gaseous mine, and wherein have 49.2% colliery be high methane, coal with
Gas Outburst mine.The increase of depth and intensity is opened recently as coal seam, coal seam low-permeable has influence on increasingly severely
The safety in production of coal mining, the anti-reflection work of single low air permeability coal seam is just urgently to be resolved hurrily as one in technology
The problem of.
In order to improve the permeability in coal seam, each colliery also takes many kinds of measures during tunnelling, such as：Coal
Layer water filling, hydraulic fracturing, the measure such as liquefied carbon dioxide gas displacement gas.However, these above-mentioned measures exist again it is bright
Aobvious weak point, for example：Coal-bed flooding can deteriorate the environment of working face, increase the discharge pressure of mine；Hydraulic fracturing faces
The effect for pressure break is not good, the leak-off problem of fracturing fluid；Carbon dioxide displacement technology, due to the supply problem of source of the gas, skill
The limitation of art and cost, simply carries out local application at present.
The output of coal bed gas is typically desorption, diffusion, the process of seepage flow, and the desorption of gas, diffuser efficiency are mainly by coal
Micropore, the influence of small pore size distribution, and the main generation in the hole and crack of mesopore and the above of seepage flow, therefore gas flows in coal seam
Dynamic complexity and the pore structure of coal are closely related.As can be seen here, how to increase the gas permeability in coal seam, further improve coal
The desorption performance of gas in layer, is just badly in need of a kind of good device for promoting the anti-reflection desorption of mash gas effect of coal body and is asked to solve this
Topic.
The content of the invention
Pulse typically refers to surge (voltage or the electricity similar to the of short duration fluctuating of pulse often used in electronic technology
Stream), key property has waveform, amplitude, width and repetition rate.(pulse is taken out, presses coal-bed gas device) of the invention utilizes gas
Pulse pump produces pulse compression gas to a large amount of gases of coal seam delivered inside, promotes coal body to produce substantial amounts of crack, high pressure energy gas
Body flows in the crack inside coal seam, not only gas can be driven to be migrated inside coal body, moreover it is possible to improve coal seam inner pore it
Between connectedness, the pore volume and its percentage of particularly macropore will effectively improve after shock wave, be conducive to
The seepage flow of gas, can improve the permeability in coal seam；Before this, pulse gas pump also begins to work, while utilizing pulse watt
Pulse extraction gas is under draft effect from coal body for this pump, and gas can carry gas and be extracted to come along pipeline, thus shape
Pressure system is taken out into the circulation cycle pulse taken out and pressed, which improves the gas permeability of coal body.
Present invention include pulse gas compression set, pulse gas suction pump, gas conveying steel pipe, gas transmission pipe,
Aspirating hole, the transfer port of coal body.After the completion of whole extraction borehole construction, to extraction borehole with slip casting bag by watt of whole drilling section
Sealing between this pipe and drilling.Gas conveying is connected respectively with gas pumping steel pipe using steel pipe, arteries and veins is sequentially ingressed into
Rush gas compressing apparatus, pulse gas pump.
Pulse gas suction pump provides outside draft, and the free gas among coal body is released by gas pulse feature,
Accordingly even when the anti-reflection generation crack of coal body discharges it coal seam again, and these methane gas can be by the gas of concentration extraction to ground
Among storage device, scientifically and rationally utilized.
Pulse gas drainage under suction pump work afterpulse gas compression pump is started working, in the presence of pulse gas, gas quilt
Certain energy is assigned, these gases are transfused to coal seam, make gas to extraction hole side seepage flow, on the one hand can increase coal seam
Gas permeability, the free gas being stored in coal body can be also released because of the draft that pulse gas suction pump is produced, another
Aspect can accelerate the motion of free gas inside coal seam.
It is pre- applied to this coal seam than relatively low highly gassy mine that the present invention is applied to coal seam permeability during heading driving
The process of coal gas is taken out, prospect is extensive.
Brief description of the drawings
Fig. 1 is the schematic diagram taken out, press gas device that pressure coal gas device is taken out in heading pulse；
Fig. 2 is that taking out, pressing gas device in the arrangement schematic diagram of drilling for pressure coal gas device is taken out in heading pulse.
Embodiment
The present invention takes out pressure coal gas device to pulse with reference to accompanying drawing and is described in detail.
With reference to the accompanying drawings, the present invention is made up of two parts：
A part of drainage system is by firedamp taking-out discharging drilling (2), pulse gas suction pump (3), delivery pipe (6 ') composition；
Another part pulse compression system is by firedamp taking-out discharging drilling (9), pulse tube (6), pulse gas compression pump (7) group
Into.
When choosing this coal seam (1) digging laneway specified, the present apparatus is installed according to the position set in advance in advance, outermost row's
Firedamp taking-out discharging drilling (2) installs pulse gas suction pump (3), delivery pipe (6 ')；Middle firedamp taking-out discharging drilling (2) installs pulse watt
This drainage pump (3), delivery pipe (6 ')；Starting impulse Ignitable gas devices, starts to input substantial amounts of gas into coal seam, and these are high
Can gas act on coal body, its internal hole crack will extend, with the increase of number of shocks, coal body it is antifatigue by force
Degree will weaken, and the less hole crack of size also begins to rupture, will increase the connectedness between hole；Before this, open
Pulse gas suction pump, carries out taking out and pressing to the gas in coal seam.The two is worked simultaneously, and one-in-and-one-out is internally formed in coal seam
Loop, strengthen coal body gas permeability, can improve and not produce extraction in the range of the extraction efficiency of gas, the coal body that digging is entered
" blind area ", the present invention has broad application prospects, and popularization and application have extensive use value and social benefit.
Claims (2)
1. pressure coal gas device is taken out in a kind of heading pulse, it is characterised in that：
It is made up of pulse drainage system and pulse compression system；
Drainage system is by firedamp taking-out discharging drilling (2), pulse gas suction pump (3), delivery pipe (6 ') composition；
Pulse compression system is by firedamp taking-out discharging drilling (9), pulse tube (6), pulse gas compression pump (7) composition.
2. pressure coal gas device is taken out in the heading pulse according to claims 1, its operating method is：
In this coal seam (1) digging laneway, the present apparatus, the firedamp taking-out discharging drilling of outermost row are installed according to the position set in advance in advance
(2) pulse gas suction pump (3), delivery pipe (6 ') are installed；Middle firedamp taking-out discharging drilling (2) installs pulse gas suction pump (3),
Delivery pipe (6 ')；Starting impulse Ignitable gas devices, starts to input substantial amounts of gas into coal seam, these high energy gas are acted on
Coal body, its internal hole crack will extend, and with the increase of number of shocks, the fatigue resistance of coal body will weaken,
The less hole crack of size also begins to rupture, will increase the connectedness between hole；Before this, unbalanced pulse gas drainage under suction
Pump, carries out taking out and pressing, the two is worked simultaneously, and the loop of one-in-and-one-out is internally formed in coal seam, enhancing to the gas in coal seam
The gas permeability of coal body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710468999.6A CN107178388A (en) | 2017-06-21 | 2017-06-21 | Pressure coal gas device is taken out in heading pulse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710468999.6A CN107178388A (en) | 2017-06-21 | 2017-06-21 | Pressure coal gas device is taken out in heading pulse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107178388A true CN107178388A (en) | 2017-09-19 |
Family
ID=59835517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710468999.6A Pending CN107178388A (en) | 2017-06-21 | 2017-06-21 | Pressure coal gas device is taken out in heading pulse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107178388A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112459997A (en) * | 2020-11-25 | 2021-03-09 | 吕梁学院 | Low-permeability coal bed gas compression device for permeability increase |
| CN114320445A (en) * | 2021-12-28 | 2022-04-12 | 中国矿业大学 | Pneumatic pulse punching permeability increasing method for low-permeability soft coal seam |
| CN117432461A (en) * | 2023-12-15 | 2024-01-23 | 太原理工大学 | Drilling gas pulse type extraction device and extraction method |
-
2017
- 2017-06-21 CN CN201710468999.6A patent/CN107178388A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112459997A (en) * | 2020-11-25 | 2021-03-09 | 吕梁学院 | Low-permeability coal bed gas compression device for permeability increase |
| CN114320445A (en) * | 2021-12-28 | 2022-04-12 | 中国矿业大学 | Pneumatic pulse punching permeability increasing method for low-permeability soft coal seam |
| CN114320445B (en) * | 2021-12-28 | 2023-10-17 | 中国矿业大学 | Pneumatic pulse punching anti-reflection method for low-permeability soft coal seam |
| CN117432461A (en) * | 2023-12-15 | 2024-01-23 | 太原理工大学 | Drilling gas pulse type extraction device and extraction method |
| CN117432461B (en) * | 2023-12-15 | 2024-03-19 | 太原理工大学 | Drilling gas pulse type extraction device and extraction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170919 |
|
| WD01 | Invention patent application deemed withdrawn after publication |