CN110410137A - A kind of coal bed gas extraction intersects the experimental simulation device and experiment analogy method in string hole - Google Patents
A kind of coal bed gas extraction intersects the experimental simulation device and experiment analogy method in string hole Download PDFInfo
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- CN110410137A CN110410137A CN201910816707.2A CN201910816707A CN110410137A CN 110410137 A CN110410137 A CN 110410137A CN 201910816707 A CN201910816707 A CN 201910816707A CN 110410137 A CN110410137 A CN 110410137A
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- 238000000605 extraction Methods 0.000 title claims abstract description 33
- 239000003245 coal Substances 0.000 title claims abstract description 32
- 238000004088 simulation Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000002474 experimental method Methods 0.000 title claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 229920000742 Cotton Polymers 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 17
- 238000005086 pumping Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000005457 optimization Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004047 hole gas Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
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- 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
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention relates to experimental simulation device and experiment analogy method that a kind of coal bed gas extraction intersects string hole, including the first vacuum pump, the second vacuum pump, the first hole pipeline, the second hole pipelines；First vacuum pump and the first hole pipeline connection, the second vacuum pump and the second hole pipeline connection, the first hole pipeline are connected to the middle part of the second hole pipeline by superficial part connecting pipeline, and the first hole pipeline is connected to the end of the second hole pipeline by deep connecting pipeline；It is respectively equipped with multiple adjusting air valves on first hole pipeline and the second hole pipeline and vacuum table superficial part connecting pipeline is equipped with middle valve, deep connecting pipeline is equipped with last valve；Intersect the simulation in string hole to coal bed gas extraction, obtain the extraction negative pressure variation rule under the influence of mash gas pumping drilling string hole, it can be used to evaluate the influence gas drainage under suction effect in drilling intersection string hole according to measurement result, and then gas drainage under suction process optimization can be carried out by adjusting drilling construction parameter.Simple structure, easy to use, gas-guide tube can reuse.
Description
Technical field
The present invention relates to experimental simulation devices and experiment analogy method that a kind of coal bed gas extraction intersects string hole, are suitable for
Test the analysis for intersecting string hole mechanism between the coal mine underground coal bed extraction borehole of indoor simulation.Intersect string hole to drainage from coal seam to carry out
Simulation, can obtain string hole under the influence of along boring direction negative pressure of suction changing rule.
Background technique
Gas drainage is to prevent and treat the essential measure of the prominent accident of coal mine gas, and since the 1950s, China just will
Gas drainage technology is as the important measures for administering coal mine gas disaster.In addition, mine biggish for Gas, takes out coal in advance
Layer gas becomes the important means for reducing gas emission.During current down-hole coal bed gas drainage is divided into stope drift active workings driving
Advance borehole extraction and concordant hole pumping and mining, the construction of a large amount of extraction boreholes are easy to generate the intersection string between extraction borehole
Hole.
Since China's coal-bearing strata is based on Permo-carboniferous period, multiple macrostructure movement is lived through, many mining areas occur
Protuberance, down warping region, fold and fracture etc. are movable, and under the action of construction is squeezed with shear stress, coal bed texture destroys and forms structure
Coal development is made, shows as that coal quality is soft, and coal seam permeability is poor, original coal gas extraction is difficult.In coal production practice, no
Mine gas may be solved the problems, such as by single gas pumping method, generally require the group using a variety of gas pumping methods
It closes, realizes the synthesis extraction to coal mine gas.Thus a problem is also produced in production practice, i.e. different levels not same order
The extraction borehole of section is easy to intersect string hole problem, such as take a step in advance extraction drilling holes at the drilling yard and the crossheading during return airway driving
The intersection string hole of concordant drilling, seriously affects the efficiency of gas drainage.
Now at present no matter laboratory or scene be showed no for coal bed gas extraction drilling intersect go here and there hole research device.
Present invention seek to address that coal bed gas extraction drilling intersects the experimental analysis problem in string hole, so as to obtain mash gas pumping drilling
Extraction negative pressure variation rule under the influence of string hole, the influence gas drainage under suction that measurement result can be used to evaluate drilling intersection string hole are imitated
Fruit, and then gas drainage under suction process optimization can be carried out by adjusting drilling construction parameter, there is important meaning to mine gas drainage
Justice.
Summary of the invention
In order to overcome the disadvantages of the above prior art, the object of the present invention is to provide a kind of structure is simple, low cost, easily
It is operated in installation, the mash gas pumping drilling string hole under different condition can be simulated, under the influence of capable of obtaining mash gas pumping drilling string hole
Extraction negative pressure variation rule coal bed gas extraction intersect string hole experimental simulation device and experiment analogy method.
In order to achieve the above objectives, the present invention uses following technical scheme, and a kind of coal bed gas extraction intersects the experiment in string hole
Simulator, including the first vacuum pump, the second vacuum pump, the first hole pipeline, the second hole pipeline；First vacuum pump and
One hole pipeline connection, second vacuum pump and the second hole pipeline connection, the middle part of first hole pipeline and the second hole pipeline
It is connected to by superficial part connecting pipeline, first hole pipeline is connected to the end of the second hole pipeline by deep connecting pipeline；
Multiple adjusting air valves and vacuum table, the superficial part connection are respectively equipped on first hole pipeline and the second hole pipeline
Pipeline is equipped with middle valve, and the deep connecting pipeline is equipped with last valve.
The first hole pipeline is concatenated by more first connecting tubes, and second hole pipeline is by more second
Connecting tube is connected in series, and multiple adjusting air valves and vacuum table are respectively provided at the connection of the second connecting tube of more first connecting tubes
Place.
The adjusting air valve and vacuum table are 9 respectively, wherein 6 adjusting air valves and vacuum table are respectively provided at the first hole pipe
On the road, in addition 3 adjusting air valves and vacuum table are located on the second hole pipeline.
Space is respectively equipped in the first hole pipeline, the second hole pipeline, superficial part connecting pipeline and deep connecting pipeline
Cotton.
First hole pipeline is made of the first connecting tube of 6 2m long, and second hole pipeline is by 3 4m long
Second connecting tube composition.
A kind of coal bed gas extraction intersects the experiment analogy method in string hole, at least includes the following steps:
The middle valve on superficial part connecting pipeline is opened, the last valve on the connecting pipeline of deep is simultaneously closed off；
Open one or more regulating valves of the first hole pipeline and the second hole road；
It opens the second vacuum pump to be tested, the first hole pipeline is recorded after the vacuum meter stable reading on the second vacuum pump
With the reading of all vacuum meters in the second hole road.
The beneficial effects of the present invention are: realizing the simulation for intersecting string hole in laboratory to coal bed gas extraction, gas is obtained
Extraction negative pressure variation rule under the influence of extraction borehole string hole, can be used to evaluate the influence in drilling intersection string hole according to measurement result
Gas drainage under suction effect, and then gas drainage under suction process optimization can be carried out by adjusting drilling construction parameter.Present apparatus simple structure, makes
With conveniently, cheap, gas-guide tube can be reused, economical and practical.
Detailed description of the invention
Fig. 1 is mounting structure schematic diagram of the invention.
Specific embodiment
The present invention is described in detail below with reference to the accompanying drawings and embodiments.
In the description of the present invention, it is to be understood that, term " center ", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on the figure
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Term " first ", " second " be used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or
Implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or imply
Ground includes one or more of the features；In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or
It is more than two.
Embodiment 1
A kind of coal bed gas extraction as shown in Figure 1 intersects the experimental simulation device in string hole, including the first vacuum pump 1, the
Two vacuum pumps 2, the first hole pipeline 4, the second hole pipeline 6；First vacuum pump 1 is connected to the first hole pipeline 4, and described second
Vacuum pump 2 is connected to the second hole pipeline 6, and the middle part of first hole pipeline 4 and the second hole pipeline 6 passes through superficial part connecting pipeline 7
Connection, first hole pipeline 4 are connected to the end of the second hole pipeline 6 by deep connecting pipeline 8；First vacuum pump 1
High pressure extract system, first hole pipeline 4, the second hole pipeline 6, superficial part connecting pipeline 7 and deep are formed with the second vacuum pump 2
Connecting pipeline 8 forms pipe-line system；
Multiple adjusting air valves 9 and vacuum table 10 are respectively equipped on first hole pipeline 4 and the second hole pipeline 6, it is described shallow
Portion's connecting pipeline 7 is equipped with middle valve 11, and the deep connecting pipeline 8 is equipped with last valve 12.The regulating valve, middle valve and last valve group
At gas leakage regulating system, the vacuum table forms pressure testing system；
For simulating extraction negative pressure, the first hole pipeline and the second hole pipeline, which are simulated, adopts brill for first vacuum pump and the second vacuum pump
Hole, superficial part connecting pipeline 7 simulate superficial part string hole, 8 analog crossover string hole of deep connecting pipeline, and middle valve and last valve simulate control respectively
String hole gas leakage degree, adjustable air throttle is for simulating extraction borehole gas leakage, vacuum table detection simulation negative pressure, in first hole
Space wadding 13 is respectively equipped in pipeline 4, the second hole pipeline 6, superficial part connecting pipeline 7 and deep connecting pipeline 8.The space wadding is used for
Simulate drainage holes on-way resistance；
The first hole pipeline 4 is concatenated by more first connecting tubes 3, and second hole pipeline 6 is by more
Second connecting tube 5 is connected in series, and multiple adjusting air valves 9 and vacuum table 10 are respectively provided at more first connecting tubes 3 second connections
The junction of pipe 5.The the first hole pipeline and the second hole pipeline constituted using more piece connecting tube, can be freely disassembled coming across,
It can guarantee regulating valve to meet the needs of under different experimental conditions, while adjusting air valve and vacuum table being located between connecting tube
How much it is determined with vacuum table according to connecting tube, while facilitates the installation of regulating valve and vacuum table；
It is the high-pressure air pipe of 16mm that connecting tube described in the present embodiment, which selects diameter, and the length of the first connecting tube selects 2m
Long, the second connecting tube length selects 4m long, specifically in assembling, the first connecting tube selection 6, the second connecting tube selection 4,
Always playing 9 He of adjusting air valve for guaranteeing that the length of the first hole pipeline and the second hole pipeline is identical while described in length
Vacuum table 10 therein 6 are separately mounted to the first connecting tube junction interconnected and the last one first connecting tube and depth
The junction of portion's connecting pipeline 8, remaining adjusting air valve and vacuum table are respectively provided at the first connecting tube interconnection and second
The junction of connecting tube and deep connecting pipeline 8, the both ends of the superficial part connecting pipeline 7 are connected to the first vacuum of distance
The distance of pump and the second vacuum pump is 8m and one end of superficial part connecting pipeline 7 connects the end of the 4th the first connecting tube, another
End is connected to the end of second the second connecting tube.
Specifically when being tested, at least include the following steps:
The middle valve 11 on superficial part connecting pipeline 7 is opened, the last valve 12 on deep connecting pipeline 8 is simultaneously closed off；
Open one or more regulating valves 9 on the first hole pipeline 4 and the second hole road 6；
It opens the second vacuum pump 2 to be tested, the first hole pipe is recorded after the vacuum meter stable reading on the second vacuum pump 2
The reading of all vacuum meters 10 on road 4 and the second hole road 6.
It opens simulation and experimental record data is taken out by the single hole of string the first hole of hole pipeline most external adjusting air valve, individually adjust gas
When valve is opened, under the conditions of adjusting air valve difference unlatching rate, the second hole pipeline is detected and by the negative pressure variation in the first hole pipeline
Trend can be used to evaluate the influence gas drainage under suction effect in drilling intersection string hole according to measurement result, and then can be by adjusting drilling
Construction parameter carries out gas drainage under suction process optimization.
Above embodiments are only to of the invention for example, do not constitute the limitation to protection scope of the present invention,
Within the same or similar design of all and present invention all belongs to the scope of protection of the present invention.
Claims (6)
1. the experimental simulation device that a kind of coal bed gas extraction intersects string hole, which is characterized in that including the first vacuum pump (1), the
Two vacuum pumps (2), the first hole pipeline (4), the second hole pipeline (6)；First vacuum pump (1) and the first hole pipeline (4) is even
Logical, second vacuum pump (2) is connected to the second hole pipeline (6), in first hole pipeline (4) and the second hole pipeline (6)
Portion is connected to by superficial part connecting pipeline (7), and first hole pipeline (4) is connected to the end of the second hole pipeline (6) by deep
Pipeline (8) connection；
Multiple adjusting air valves (9) and vacuum table (10), institute are respectively equipped on first hole pipeline (4) and the second hole pipeline (6)
Superficial part connecting pipeline (7) are stated equipped with middle valve (11), the deep connecting pipeline (8) is equipped with last valve (12).
2. a kind of coal bed gas extraction intersects the experimental simulation device in string hole according to claim 1, which is characterized in that described
The first hole pipeline (4) be to be concatenated by more first connecting tubes (3), second hole pipeline (6) be by more second connect
Adapter tube (5) is connected in series, and multiple adjusting air valves (9) and vacuum table (10) are respectively provided at more first connecting tubes (3) a second and connect
Take over the junction of (5).
3. a kind of coal bed gas extraction intersects the experimental simulation device in string hole according to claim 2, which is characterized in that described
Adjusting air valve (9) and vacuum table (10) are 9 respectively, wherein 6 adjusting air valves (9) and vacuum table (10) are respectively provided at the first hole
On pipeline (6), in addition 3 adjusting air valves (9) and vacuum table (10) are located on the second hole pipeline (7).
4. a kind of coal bed gas extraction intersects the experimental simulation device in string hole according to claim 1, which is characterized in that described
The first hole pipeline (4), the second hole pipeline (6), be respectively equipped with space in superficial part connecting pipeline (7) and deep connecting pipeline (8)
Cotton (13).
5. a kind of coal bed gas extraction intersects the experimental simulation device in string hole according to claim 2, which is characterized in that described
First hole pipeline (4) is made of the first connecting tube (3) of 6 2m long, and second hole pipeline (6) is by the of 3 4m long
Two connecting tubes (5) composition.
6. the experimental simulation device that -4 any one coal bed gas extraction intersect string hole according to claim 1 provides a kind of experiment mould
Quasi- method, which is characterized in that at least include the following steps:
The middle valve (11) on superficial part connecting pipeline (7) is opened, the last valve (12) on deep connecting pipeline (8) is simultaneously closed off；
Open one or more regulating valves (9) on the first hole pipeline (4) and the second hole road (6)；
It opens the second vacuum pump (2) to be tested, the first hole pipe is recorded after the vacuum meter stable reading on the second vacuum pump (2)
The reading of all vacuum meters (10) on road (4) and the second hole road (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910816707.2A CN110410137A (en) | 2019-08-30 | 2019-08-30 | A kind of coal bed gas extraction intersects the experimental simulation device and experiment analogy method in string hole |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910816707.2A CN110410137A (en) | 2019-08-30 | 2019-08-30 | A kind of coal bed gas extraction intersects the experimental simulation device and experiment analogy method in string hole |
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| CN110410137A true CN110410137A (en) | 2019-11-05 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106057061A (en) * | 2016-08-17 | 2016-10-26 | 西安科技大学 | Laboratory simulation system and method for coal mine gas extraction boring leakage position detection |
| CN206057308U (en) * | 2016-08-17 | 2017-03-29 | 西安科技大学 | A kind of coal mine gas extraction drill hole Gas leak position testing laboratory analog |
| CN107542486A (en) * | 2017-09-30 | 2018-01-05 | 西安科技大学 | Drilling gas extraction laboratory analog system and method |
| CN208534533U (en) * | 2018-08-15 | 2019-02-22 | 山东安益矿用设备有限公司 | Height negative pressure line intelligent conversion regulator control system |
| CN109441398A (en) * | 2018-12-12 | 2019-03-08 | 安徽理工大学 | A kind of high pressure resistant filtering type boring positioning hole sealing device and application method |
| CN208619156U (en) * | 2018-08-15 | 2019-03-19 | 山东安益矿用设备有限公司 | Mine gas drilling is grouped extraction pipe-line system |
| CN210317390U (en) * | 2019-08-30 | 2020-04-14 | 华北科技学院 | Experimental simulation device for cross hole stringing of coal seam gas extraction |
-
2019
- 2019-08-30 CN CN201910816707.2A patent/CN110410137A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106057061A (en) * | 2016-08-17 | 2016-10-26 | 西安科技大学 | Laboratory simulation system and method for coal mine gas extraction boring leakage position detection |
| CN206057308U (en) * | 2016-08-17 | 2017-03-29 | 西安科技大学 | A kind of coal mine gas extraction drill hole Gas leak position testing laboratory analog |
| CN107542486A (en) * | 2017-09-30 | 2018-01-05 | 西安科技大学 | Drilling gas extraction laboratory analog system and method |
| CN208534533U (en) * | 2018-08-15 | 2019-02-22 | 山东安益矿用设备有限公司 | Height negative pressure line intelligent conversion regulator control system |
| CN208619156U (en) * | 2018-08-15 | 2019-03-19 | 山东安益矿用设备有限公司 | Mine gas drilling is grouped extraction pipe-line system |
| CN109441398A (en) * | 2018-12-12 | 2019-03-08 | 安徽理工大学 | A kind of high pressure resistant filtering type boring positioning hole sealing device and application method |
| CN210317390U (en) * | 2019-08-30 | 2020-04-14 | 华北科技学院 | Experimental simulation device for cross hole stringing of coal seam gas extraction |
Non-Patent Citations (1)
| Title |
|---|
| 李改革等: "顺层钻孔瓦斯抽采漏气影响因素研究", 《华北科技学院学报》, vol. 15, no. 3, 15 June 2018 (2018-06-15), pages 16 - 20 * |
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