CN108412486A - A kind of one hole multistage gas pressure real-time monitoring device of mine and its installation method - Google Patents
A kind of one hole multistage gas pressure real-time monitoring device of mine and its installation method Download PDFInfo
- Publication number
- CN108412486A CN108412486A CN201810214811.XA CN201810214811A CN108412486A CN 108412486 A CN108412486 A CN 108412486A CN 201810214811 A CN201810214811 A CN 201810214811A CN 108412486 A CN108412486 A CN 108412486A
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- Prior art keywords
- gas pressure
- steel pipe
- pressure sensor
- hole
- time monitoring
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000009434 installation Methods 0.000 title claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 67
- 239000010959 steel Substances 0.000 claims abstract description 67
- 238000007789 sealing Methods 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 239000003245 coal Substances 0.000 claims description 15
- 238000005553 drilling Methods 0.000 claims description 15
- 238000012544 monitoring process Methods 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000009530 blood pressure measurement Methods 0.000 abstract description 4
- 238000004880 explosion Methods 0.000 description 6
- 239000002775 capsule Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Measuring Fluid Pressure (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
A kind of one hole multistage gas pressure real-time monitoring device of mine of present invention offer and its installation method, including steel pipe, distribution is provided at least three gas pressure sensors along its length on the outer wall of steel pipe, two of which gas pressure sensor is respectively arranged at the both ends of steel pipe, tubulose hardness PVC covers are arranged with outside each gas pressure sensor, stomata is offered on tubulose hardness PVC covers, each gas pressure sensor is respectively connected with data line, and data line is extended to the same end of steel pipe by steel duct, it is sealed by sealing device in steel pipe between two neighboring gas pressure sensor, it is arranged with hydraulic sealing device outside steel pipe between two neighboring gas pressure sensor.To solve the problems, such as that existing gas pressure measurement device much cannot be satisfied modern mine safety production requirement.The invention belongs to coal-bed gas pressures to monitor field.
Description
Technical field
The present invention relates to a kind of gas pressure real-time monitoring device and its installation methods, belong to coal-bed gas pressure monitoring neck
Domain.
Background technology
Gas is colourless, tasteless gas, and the relative density to air is 0.554, and gas is close in normal conditions
Degree is 0.716kg/m3, the penetrating power of gas is 1.6 times of air, is insoluble in water, cannot maintain to breathe, reach a certain concentration
When, it can make one to suffocate because of anoxic.In coal body or country rock, gas is with existing for free state and sorption state.Gas does not help
Combustion, but after it is mixed into a certain concentration with air, meeting fire can burn, explode.It will produce 3 fatal factors when gas explosion：
Explosive flame, explosion wave and toxic and harmful gas.Gas explosion not only causes a large amount of casualties, but also can be serious
It destroys mine facility, interrupt production.Mine gas explosion often causes coal-dust explosion, mine fire, roadway to cave in emit with top plate
Fall equal secondary disasters.Whether Gas Explosion Accidents in Coal Mines is the disaster of most serious in mine accident, so surpassing for gas pressure
Limit, has produced various types of gas pressure measurement devices.But with the fast development of coal production technical merit, coal mine
Production capacity greatly improve, the depth of exploitation also greatly increases, same mine gas occurrence condition also more aobvious complexity, outburst amount
Also it greatly increases, previous gas pressure measurement device much cannot be satisfied the requirement of modern mine safety production.
Invention content
It is an object of the invention to：A kind of one hole multistage gas pressure real-time monitoring device of mine and its installation side are provided
Method, to solve the problems, such as that existing gas pressure measurement device much cannot be satisfied modern mine safety production requirement.
To solve the above problems, quasi- use such a one hole multistage gas pressure real-time monitoring device of mine, including steel
It manages, is distributed along its length on the outer wall of steel pipe and is provided at least three gas pressure sensors, two of which gas pressure passes
Sensor is respectively arranged at the both ends of steel pipe, and tubulose hardness PVC covers, tubulose hardness are arranged with outside each gas pressure sensor
Stomata is offered on PVC covers, gas pressure sensor is fixed on by tubulose hardness PVC covers on steel pipe, such as：It can be in steel pipe
Outer wall opens up card slot, and tubulose hardness PVC covers are arranged in card slot, to realize gas pressure sensor and tubulose hardness PVC covers
Fixation, each gas pressure sensor is respectively connected with data line, and data line extends to steel pipe by steel duct
The same end, passes through to be connect with external host etc., in the steel pipe between two neighboring gas pressure sensor and seals dress
Set sealing, i.e., by the sealing device by the steel pipe inner chamber sealed separation between two neighboring gas pressure sensor, adjacent two
It is arranged with hydraulic sealing device outside steel pipe between a gas pressure sensor, since the use of the steel pipe is put it into coal
In the exploration hole that is drilled out of layer, to by the vestibule sealed separation between two neighboring gas pressure sensor.
In aforementioned monitoring device, the sealing device is sealing-plug, and data line passes through sealing-plug and stretches out；
In aforementioned monitoring device, the hydraulic sealing device is hollow elastic sealing ring, i.e., annular sealing of hole capsule, and should
Elastic sealing ring is also associated with water injection pipe, and by water injection pipe, into ring, water filling makes elastic sealing ring expand, thus by steel pipe and brill
It is sealed between hole, by drilling subsection, every section monitors air pressure by a gas pressure sensor；
In aforementioned monitoring device, tubulose hardness PVC covers long 20cm, diameter 20mm, is opened up on the tube wall of tubulose hardness PVC covers
There is fine and closely woven hole, to realize that inner and outer air pressure is identical, while sensor being avoided to be damaged；
The present invention also provides a kind of installation methods of one hole multistage gas pressure real-time monitoring device of mine, and specific method is such as
Under：
1) horizontal drilling operation first, as requested using drill bit, is carried out from exploitation towards coal seam, survey is pried into coal seam
Hole；
2) drilling rod is withdrawn from after drilling depth reaches the predetermined area, drilling is cleaned with clear water；
3) steel pipe is taken, multiple gas pressure sensors, gas pressure is arranged in distribution along its length on the outer wall of steel pipe
Sensor is respectively connected with data line, and data line is extended to the same end of steel pipe, two neighboring gas by steel duct
It is sealed by sealing device in steel pipe between pressure sensor, the steel pipe housing between two neighboring gas pressure sensor
Equipped with hydraulic sealing device；
4) steel pipe is extended in exploration hole, and the data line is in one end of steel pipe and exploration hole by drawing, and
It is connected with control host, the detection signal of gas pressure sensor is delivered to control host；
5) the injection pressure water into hydraulic sealing device makes it expand and fill between steel pipe and exploration hole；
6) start control host and carry out gas pressure monitoring, real time monitoring.
Compared with prior art, multiple gas pressure sensors are arranged by being distributed on steel pipe in the present invention, when in use, only
It need to be drilled with exploration hole towards coal seam carry out level by coal mining, then extend to steel pipe in exploration hole, then filled to water-pressure sealed
Water-filling to be set, makes it that will be sealed between steel pipe and exploration hole, you can the segmented pressure that multistage coal seam is carried out using sensor is monitored,
Seam gas content is monitored in real time, guarantee is provided for the safety of pit mining；The present invention is easy to operate, structure letter
Single, the sealing of hole capsule fabulous, easy to operate using sealing of hole effect is sealed, and monitoring part is reusable；It can will measure
Data collection get up, it is measured after being handled mine exploitation have prodigious referential and practicability；It can be with really
Border needs to change pipe range and pressure sensor quantity, solves the excessively unification of existing coal-bed gas monitoring device, less pair
The real-time monitoring of pressure, the technical problems such as monitoring data misregister or be not easy arranges, device is not easily recycled.
Description of the drawings
Fig. 1 is the cross-sectional view when present invention uses in exploration hole.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with attached drawing
The detailed description of step, it should be understood that described herein specific examples are only used to explain the present invention, is not used to limit this hair
It is bright.
Embodiment：
Referring to Fig.1, the present embodiment provides a kind of one hole multistage gas pressure real-time monitoring device of mine, including steel pipe 1, steel
Distribution setting along its length is there are three gas pressure sensor 2 on the outer wall of pipe 1,1 long 501m of steel pipe, caliber 10mm, and first
A gas pressure sensor 2 is set to one end of steel pipe 1, and second gas pressure sensor 2 and first gas pressure sense
Device 2 is separated by 242.5m, and third gas pressure sensor 2 is set to away from 1 other end 17.5m of steel pipe, and each gas pressure passes
Tubulose hardness PVC covers 3 are arranged with outside sensor 2, tubulose hardness PVC covers 3 long 20cm, diameter 20mm, and tubulose hardness PVC covers on 3
Fine and closely woven stomata is offered, aperture is less than or equal to 3mm, to realize that inner and outer air pressure is identical, while sensor being avoided to be damaged, gas
Pressure sensor 2 is fixed on by tubulose hardness PVC covers 3 on steel pipe 1, such as：Card slot can be opened up in the outer wall of steel pipe 1, it will
Tubulose hardness PVC covers 3 are arranged in card slot, to realize the fixation of gas pressure sensor 2 and tubulose hardness PVC covers 3, Mei Geqi
Pressure sensor 2 is respectively connected with data line 5, and data line 5 inside steel pipe 1 by extending to the one of aforementioned steel pipe 1
End passes detection signal, the steel between two neighboring gas pressure sensor 2 to be connect with external host etc.
It is sealed by sealing device 4 in pipe 1, i.e., by the sealing device 4 by the steel pipe 1 between two neighboring gas pressure sensor 2
Bore seal separates, and sealing device 4 is sealing-plug, and data line 5 passes through sealing-plug and stretches out, and two neighboring gas pressure passes
It is arranged with hydraulic sealing device 6 outside steel pipe 1 between sensor 2, since the use of the steel pipe 1 is to put it into be drilled out in coal seam
Exploration hole in, to by the vestibule sealed separation between two neighboring gas pressure sensor 2.
Hydraulic sealing device 6 is hollow elastic sealing ring, i.e., annular sealing of hole capsule, sealing of hole capsule is currently used envelope
Hole tool, and the elastic sealing ring is also associated with water injection pipe, water injection pipe also by being drawn in steel pipe 1, is noted by water injection pipe into ring
Water makes elastic sealing ring expand, to be sealed between steel pipe 1 and drilling, then by the water filling seal of tube, and by drilling subsection, every section
Air pressure is monitored by a gas pressure sensor 2.
Its installation method is as follows：
First, as requested using drill bit, horizontal drilling operation is carried out from exploitation towards coal seam, gaging hole is pried into coal seam
7, aperture 65mm, hole depth 500m；
Drilling rod is withdrawn from after drilling depth reaches the predetermined area, drilling is cleaned with clear water；
Steel pipe 1 is taken, sensor is sent into exploration hole 7 using steel pipe 1, i.e., the other end of aforementioned steel pipe 1 is extended into detection
The bottom in hole 7, and the data line 5 is connected by extraction in one end of steel pipe 1 and exploration hole 7, and with control host, it will
The detection signal of gas pressure sensor 2 is delivered to control host；
Into hydraulic sealing device 6, injection pressure water, pressure reach 4MPa or so, so that it is expanded and fill steel pipe 1 and visit
Between gaging hole 7, hole is filled, to which exploration hole 7 is divided into several sections；
Start control host and carries out gas pressure monitoring, real time monitoring.
Claims (5)
1. a kind of one hole multistage gas pressure real-time monitoring device of mine, including steel pipe (1), the outer wall upper edge length of steel pipe (1)
Directional spreding is provided at least three gas pressure sensors (2), and two of which gas pressure sensor (2) is respectively arranged at steel
The both ends of (1) are managed, each gas pressure sensor (2) is arranged with tubulose hardness PVC covers (3), tubulose hardness PVC covers (3) outside
On offer stomata, each gas pressure sensor (2) is respectively connected with data line (5), and data line (5) is by steel
The same end of steel pipe (1) is extended to inside pipe (1), passes through sealing in the steel pipe (1) between two neighboring gas pressure sensor (2)
Device (4) seals, and hydraulic sealing device (6) is arranged with outside the steel pipe (1) between two neighboring gas pressure sensor (2).
2. a kind of one hole multistage gas pressure real-time monitoring device of mine according to claim 1, it is characterised in that：It is described close
Seal apparatus (4) is sealing-plug, and data line (5) passes through sealing-plug and stretches out.
3. a kind of one hole multistage gas pressure real-time monitoring device of mine according to claim 1, it is characterised in that：The water
Pressure sealing device (6) is hollow elastic sealing ring, and the elastic sealing ring is also associated with water injection pipe.
4. a kind of one hole multistage gas pressure real-time monitoring device of mine according to claim 1, it is characterised in that：Tubulose is hard
Property PVC cover (3) long 20cm, diameter 20mm.
5. a kind of installation method of one hole multistage gas pressure real-time monitoring device of mine, the specific method is as follows：
1) horizontal drilling operation first, as requested using drill bit, is carried out from exploitation towards coal seam, gaging hole is pried into coal seam
(7)；
2) drilling rod is withdrawn from after drilling depth reaches the predetermined area, drilling is cleaned with clear water；
3) steel pipe (1) is taken, multiple gas pressure sensors (2), gas is arranged in distribution along its length on the outer wall of steel pipe (1)
Pressure sensor (2) is respectively connected with data line (5), and data line (5) is by extending to steel pipe (1) inside steel pipe 1
The same end passes through sealing device (4) sealing, two neighboring gas in the steel pipe (1) between two neighboring gas pressure sensor (2)
It is arranged with hydraulic sealing device (6) outside steel pipe (1) between pressure sensor (2)；
4) steel pipe (1) is extended in exploration hole (7), and the one end and exploration hole of the data line (5) by steel pipe (1)
(7) it draws in, and is connected with control host, the detection signal of gas pressure sensor (2) is delivered to control host；
5) the injection pressure water into hydraulic sealing device (6) makes it expand and fills between steel pipe (1) and exploration hole (7)；
6) start control host and carry out gas pressure monitoring, real time monitoring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810214811.XA CN108412486A (en) | 2018-03-15 | 2018-03-15 | A kind of one hole multistage gas pressure real-time monitoring device of mine and its installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810214811.XA CN108412486A (en) | 2018-03-15 | 2018-03-15 | A kind of one hole multistage gas pressure real-time monitoring device of mine and its installation method |
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| Publication Number | Publication Date |
|---|---|
| CN108412486A true CN108412486A (en) | 2018-08-17 |
Family
ID=63131688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810214811.XA Pending CN108412486A (en) | 2018-03-15 | 2018-03-15 | A kind of one hole multistage gas pressure real-time monitoring device of mine and its installation method |
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| Country | Link |
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| CN (1) | CN108412486A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107280A (en) * | 2019-04-10 | 2019-08-09 | 中国水利水电科学研究院 | Sensor, method is installed in monoblock type positioning and directing hole |
| CN110118309A (en) * | 2019-06-13 | 2019-08-13 | 新天绿色能源股份有限公司 | A kind of Monitoring Pinpelines device |
| CN113970401A (en) * | 2021-12-22 | 2022-01-25 | 季华实验室 | Pipeline pressure sensor |
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Cited By (3)
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|---|---|---|---|---|
| CN110107280A (en) * | 2019-04-10 | 2019-08-09 | 中国水利水电科学研究院 | Sensor, method is installed in monoblock type positioning and directing hole |
| CN110118309A (en) * | 2019-06-13 | 2019-08-13 | 新天绿色能源股份有限公司 | A kind of Monitoring Pinpelines device |
| CN113970401A (en) * | 2021-12-22 | 2022-01-25 | 季华实验室 | Pipeline pressure sensor |
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