CN113818921B - Device and method for shortening coal bed gas pressure measurement observation time - Google Patents
Device and method for shortening coal bed gas pressure measurement observation time Download PDFInfo
- Publication number
- CN113818921B CN113818921B CN202111054709.6A CN202111054709A CN113818921B CN 113818921 B CN113818921 B CN 113818921B CN 202111054709 A CN202111054709 A CN 202111054709A CN 113818921 B CN113818921 B CN 113818921B
- Authority
- CN
- China
- Prior art keywords
- capsule
- grouting
- coal
- liquid
- water
- 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.)
- Active
Links
- 239000003245 coal Substances 0.000 title claims abstract description 70
- 238000009530 blood pressure measurement Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000004904 shortening Methods 0.000 title claims abstract description 18
- 239000002775 capsule Substances 0.000 claims description 67
- 239000007788 liquid Substances 0.000 claims description 59
- 230000007246 mechanism Effects 0.000 claims description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 47
- 238000002347 injection Methods 0.000 claims description 34
- 239000007924 injection Substances 0.000 claims description 34
- 238000005553 drilling Methods 0.000 claims description 22
- 239000007921 spray Substances 0.000 claims description 17
- 238000012360 testing method Methods 0.000 claims description 14
- 239000002002 slurry Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- 239000011358 absorbing material Substances 0.000 claims description 7
- 238000007711 solidification Methods 0.000 claims description 6
- 230000008023 solidification Effects 0.000 claims description 6
- 238000007569 slipcasting Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000009736 wetting Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 6
- 239000011435 rock Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012502 risk assessment Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
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)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The embodiment of the application discloses a device and a method for shortening the measurement and observation time of coal seam gas pressure, which relate to the technical field of coal seam gas pressure measurement and mainly solve the problems of low balance speed and long observation time of a gas flow field in the traditional device and method for measuring the coal seam gas pressure.
Description
Technical Field
The application relates to the technical field of coal bed gas pressure measurement, in particular to a device and a method for shortening coal bed gas pressure measurement observation time.
Background
The coal-bed gas pressure is a key index for risk assessment of mine gas disasters (the gas pressure critical value for determining the lower boundary of a gas weathered zone is 0.1-0.15MPa, and the gas pressure critical value for identifying the outburst risk of a coal bed is 0.74 MPa), so that obtaining reliable coal-bed gas pressure data is a key link for preventing and controlling the mine gas disasters.
The method for measuring the gas pressure of the coal seam by the through-layer drilling grouting hole sealing method is a common method for measuring the gas pressure of the coal seam; however, it takes about 10 hours from the completion of drilling to the solidification of the slurry and the start of the surface pressure measurement; during the period, the gas of the coal bed around the drill hole is in a natural emission state, more gas is released, and the later gas flow field balance time is directly caused to be longer; the method for directly measuring the gas pressure of underground coal seam of the coal mine (AQ/T1047-2007) prescribes passive pressure measurement, and the observation is required for 20-30 days.
In order to shorten the observation time of coal seam gas pressure measurement, the most effective method at present is to actively supplement gas, namely, filling gas into a drill hole to compensate the gas emission loss before slurry solidification. The method for directly measuring the gas pressure of a coal seam under a coal mine (AQ/T1047-2007) stipulates that: when the gas pressure of the coal seam is less than 4MPa, the active pressure measurement needs to be observed for 5-10 days, and for field engineering application (especially for rock cross-cut coal uncovering engineering), the observation time of 5-10 days is still longer.
Therefore, the exploration of new measures for accelerating the balance speed of the gas flow field, shortening the observation time of coal bed gas pressure measurement and relieving the restriction of overlong gas pressure measurement period on engineering progress and production connection are particularly urgent.
Disclosure of Invention
An objective of the embodiments of the present application is to provide a device and a method for shortening the observation time for measuring the pressure of coal-bed gas, so as to solve the problems set forth in the background art.
In order to achieve the above purpose, the present application provides the following technical solutions:
the utility model provides a device for shortening coal seam gas pressure survey observation time, includes slip casting mechanism, its characterized in that still includes:
the surface of the capsule is wrapped with a light, flexible and water-absorbing material, and the top end of the capsule is provided with a plurality of spray heads; and
the pressure measuring mechanism is internally provided with a pressure measuring pipe for pushing the capsule to move in the drill hole; and
the water delivery mechanism is internally provided with a water injection pipe, and the water outlet end of the water injection pipe is connected with the lower end of the capsule and is used for driving the spray head to spray water to the light, flexible and water-absorbing material; and
the expanding liquid conveying mechanism is internally provided with a liquid injection pipe, the liquid outlet end of the liquid injection pipe is connected with the lower end of the capsule and used for conveying expanding liquid to the capsule and driving the capsule to expand and attach to the coal wall so as to block the gas flow in the coal layer.
As a further scheme of the application: the outline of the spray heads is designed into an umbrella shape and is uniformly distributed at the top of the capsule, so that the diameter of water flow sprayed by the spray heads is reduced.
As still further aspects of the application: the grouting mechanism comprises:
the grouting pipe is characterized in that a grouting outlet at one end of the grouting pipe is positioned in the drilling hole; and
and the grouting pump is used for conveying slurry into the drilled hole, and a slurry inlet at the other end of the grouting pipe is communicated with the grouting pump.
As still further aspects of the application: the pressure measuring mechanism is further provided with a pressure gauge, the pressure measuring pipe is connected with the pressure gauge, the front end and the lower end of the pressure measuring pipe are respectively provided with a plurality of liquid inlets and liquid outlets, and slurry in the drilled holes enters the pressure measuring pipe through the liquid inlets and flows out of the liquid outlets.
As still further aspects of the application: the water delivery mechanism is also provided with a first pressure test pump, and the water inlet end of the water injection pipe is connected with the first pressure test pump.
As still further aspects of the application: the expansion liquid conveying mechanism is further provided with a second pressure testing pump, and the liquid inlet end of the liquid injection pipe is connected with the second pressure testing pump.
As still further aspects of the application: still be provided with the baffle in the slip casting mechanism, the drill way department at the drilling is installed to the baffle for prevent thick liquid from flowing backwards from drill way department and overflowing, slip casting pipe, water injection pipe, piezometer tube and notes liquid pipe all insert to close and connect on the baffle.
A method for shortening the observation time of coal-bed gas pressure measurement, comprising the apparatus for shortening the observation time of coal-bed gas pressure measurement according to any one of the above aspects, comprising the steps of:
s1, pushing a capsule positioned in a drill hole to a designated position by a pressure measuring tube;
s2, starting a water delivery mechanism, enabling water to enter the top end of the capsule through a water injection pipe, overflowing through a spray head, wetting light and flexible materials wrapped on the side face of the capsule, and closing the water delivery mechanism;
s3, starting an expansion liquid conveying mechanism, enabling expansion liquid to enter the capsule through the liquid injection pipe, forcing the capsule to expand, enabling flexible materials on the side face of the capsule to cling to the coal wall, and preventing gas of the coal bed from flowing in the direction of drilling holes;
s4, starting a grouting mechanism to enter the drilling hole, when the grouting rises to the front end of a pressure measuring pipe in the pressure measuring mechanism, allowing the grouting liquid entering from the front end of the pressure measuring pipe to flow out from the lower end under the action of gravity, closing the grouting mechanism, and stopping grouting to wait for solidification of the grouting liquid;
s5, releasing part of the expansion liquid by adjusting the expansion liquid conveying mechanism, properly reducing the diameter of the capsule, separating the flexible material on the side surface of the capsule from the coal wall, reading the pressure value by the pressure measuring mechanism, and waiting for the balance of the gas flow field.
Compared with the prior art, the application has the beneficial effects that:
the capsule sent into the front end of the drilling hole can be tightly attached to the coal wall around the drilling hole before the drilling hole is sealed, so that gas of a coal bed around the drilling hole is prevented from rushing out to the drilling hole, and after the drilling hole is sealed, the capsule can occupy most of the space of the pressure measuring chamber, reduce the volume of the pressure measuring chamber, reduce the quantity of gas rushing into the pressure measuring chamber from the coal wall around the drilling hole, accelerate the balance speed of a gas flow field, shorten the observation time, and solve the problems of slow balance speed and long observation time of the gas flow field in the conventional coal bed gas pressure measuring device and method.
Drawings
FIG. 1 is a schematic diagram of an apparatus and method for shortening the observation time of coal seam gas pressure measurement according to the present application.
In the figure: 1-roof strata; 2-coal bed; 3-floor strata; 4-spray head; 5-capsules; 6, a baffle plate; 7-grouting pump; 8-grouting pipe; 9-a water injection pipe; 10-a first pressure test pump; 11-a pressure gauge; 12-pressure measuring tube; 13-a second pressure test pump; 14-liquid injection pipe.
Detailed Description
The following will be described in detail and with reference to the drawings in the embodiments of the present application, and please refer to fig. 1, in which the embodiment provides a device for shortening the observation time of coal seam gas pressure measurement, including a grouting mechanism, and further including:
the capsule 5 is positioned in the drilling hole, the surface of the capsule 5 is wrapped with a light, flexible and water-absorbing material, and the top end of the capsule 5 is provided with a plurality of spray heads 4; and
the pressure measuring mechanism is internally provided with a pressure measuring pipe 12 for pushing the capsule 5 to move in the drill hole; and
the water delivery mechanism is internally provided with a water injection pipe 9, and the water outlet end of the water injection pipe 9 is connected with the lower end of the capsule 5 and is used for driving the spray head 4 to spray water to the light, flexible and water-absorbing material; and
the expansion liquid conveying mechanism is internally provided with a liquid injection pipe 14, a liquid outlet end of the liquid injection pipe 14 is connected with the lower end of the capsule 5 and used for conveying expansion liquid to the capsule 5 and driving the capsule 5 to expand and be attached to a coal wall so as to further obstruct gas flow in the coal layer.
In the technical scheme, a worker constructs a borehole from the bottom plate rock stratum 3 to the coal seam 2 according to requirements, the coal seam 2 is positioned between the bottom plate rock stratum 3 and the top plate rock stratum, after the borehole is constructed in place, the pressure measuring tube 12 is used for pushing the capsule 5 to the coal seam 2, and the pressure measuring tube 12 is a rigid hollow tube with higher strength and can be used for conveying the capsule 5 to the front of the borehole.
Referring to fig. 1, further, the capsule 5 is in a cylindrical shape, and a layer of light, flexible and water-absorbing material (such as sponge, cotton, etc.) is wrapped on the side surface, so that the difficulty in feeding into a drill hole can be reduced, the flexible material can be tightly attached to a coal wall, and the water absorption can strengthen the effect of inhibiting gas emission of the coal wall.
Referring to fig. 1, further, when the injection is expanded, the side surface of the capsule 5 can be tightly attached to the coal wall to prevent the gas of the coal seam 2 around the drill hole from flowing out to the drill hole, and after the expansion is slightly released, the capsule contracts itself, and the side surface is separated from the coal wall and occupies most of the space of the pressure measuring chamber.
Referring to fig. 1, further, the outline of the plurality of nozzles 4 is designed into an umbrella shape and is uniformly distributed on the top of the capsule 5, so as to reduce the diameter of the water flow sprayed by the nozzles 4, and convert the water flow into trickle, so that the side wrapping material of the capsule 5 can be ensured to uniformly absorb the water.
Referring to fig. 1, as an embodiment of the present application, the pressure measuring mechanism is further provided with a pressure gauge 11, the pressure measuring tube 12 is connected with the pressure gauge 11, the front end and the lower end of the pressure measuring tube 12 are respectively provided with a plurality of liquid inlet holes and liquid outlet holes, and the slurry in the drilled holes enters the pressure measuring tube 12 through the plurality of liquid inlet holes and flows out from the liquid outlet holes.
Referring to fig. 1, as an embodiment of the present application, a first pressure test pump 10 is further disposed on the water delivery mechanism, and the water inlet end of the water injection pipe 9 is connected to the first pressure test pump 10.
Referring to fig. 1, as an embodiment of the present application, a second pressure test pump 13 is further disposed on the expansion fluid conveying mechanism, and a fluid inlet end of the fluid injection tube 14 is connected to the second pressure test pump 13.
Referring to fig. 1, as an embodiment of the present application, the grouting mechanism includes:
the grouting pipe 8, a grouting outlet at one end of the grouting pipe 8 is positioned in the drilling hole; and
and a grouting pump 7, wherein a grouting inlet at the other end of the grouting pipe 8 is communicated with the grouting pump 7 and is used for conveying slurry into a drilling hole.
Referring to fig. 1, further, a baffle 6 is further disposed in the grouting mechanism, the baffle 6 is mounted at an orifice of the drilled hole and is used for preventing the slurry from flowing back and overflowing from the orifice, the grouting pipe 8, the water injection pipe 9, the pressure measuring pipe 12 and the liquid injection pipe 14 are all connected to the baffle 6 in an inserting manner, the baffle 6 is circular and can be directly inserted into the drilled hole to prevent the slurry from leaking, and the baffle 6 is provided with a plurality of holes to facilitate the insertion of the grouting pipe 8, the water injection pipe 9, the pressure measuring pipe 12 and the liquid injection pipe 14.
A method for shortening a coal seam gas pressure measurement observation time, comprising an apparatus for shortening a coal seam gas pressure measurement observation time as described in any of the above embodiments, comprising the steps of:
s1, pushing the capsule 5 positioned in the drilled hole to a designated position by a pressure measuring tube 12;
s2, starting a water delivery mechanism, enabling water to enter the top end of the capsule 5 through a water injection pipe 9, overflowing through a spray head 4, wetting light and flexible materials wrapped on the side face of the capsule 5, and closing the water delivery mechanism;
s3, starting an expansion liquid conveying mechanism, enabling expansion liquid to enter the capsule 5 through the liquid injection pipe 14, forcing the capsule 5 to expand, enabling flexible materials on the side face of the capsule 5 to cling to the coal wall, and preventing gas of the coal bed from flowing in the direction of drilling holes;
s4, starting a grouting mechanism to enter the drilling hole, when the grouting rises to the front end of the pressure measuring tube 12 in the pressure measuring mechanism, allowing the grouting to flow out from the lower end under the action of gravity, closing the grouting mechanism, and stopping grouting to wait for solidification of the grouting;
s5, by adjusting the expansion liquid conveying mechanism, releasing part of expansion liquid, properly reducing the diameter of the capsule 5, separating the flexible material on the side surface of the capsule 5 from the coal wall, reading the pressure value by the pressure measuring mechanism, and waiting for the balance of the gas flow field.
When the device is used, before grouting and hole sealing, the capsule 5 is sent into the layer of the coal bed 2 in the drill hole, high-pressure liquid is injected into the capsule 5, the capsule 5 is expanded and clings to the coal wall around the drill hole, gas of the coal bed around the drill hole is prevented from rushing out to the drill hole, and the gas loss is reduced, so that a better base condition is created for balancing the gas flow field after hole sealing (the injection is that a certain volume of gas flows out of the coal bed in unit time before hole sealing, and after hole sealing, even if high-pressure gas is injected for compensation, the time required by the compensated gas after seepage, adsorption and balancing is far longer than the unit discharge time before hole sealing);
after grouting, slurry solidification and installation of the pressure gauge 11, the liquid pressure in the capsule 5 is slightly reduced, the capsule 5 is separated from the coal wall, so that the drilling pressure measuring chamber is convenient to communicate with the coal wall, but the capsule 5 still occupies most of the space of the pressure measuring chamber, so that the volume of the pressure measuring chamber is reduced, the amount of gas rushing into the pressure measuring chamber from the coal wall around the drilling hole is reduced in the gas flow field balancing process, the balancing speed of the gas flow field can be accelerated, and the observation time is shortened.
In summary, the capsule 5 sent to the front end of the drill hole can be tightly attached to the coal wall around the drill hole before the pressure measurement drill hole is sealed, so that the gas of the coal bed around the drill hole is prevented from flowing out to the drill hole, and after the pressure measurement drill hole is sealed, the capsule occupies most space of the pressure measurement chamber, reduces the volume of the pressure measurement chamber, reduces the amount of the gas flowing into the pressure measurement chamber from the coal wall around the drill hole, can accelerate the balance speed of the gas flow field, shortens the observation time, and solves the problems of low balance speed and long observation time of the gas flow field in the conventional coal bed gas pressure measurement device and method.
It should be noted that, although the present disclosure describes embodiments, each embodiment does not include a separate technical solution, and the description is only for clarity, those skilled in the art should understand that the technical solutions in the embodiments may be properly combined to form other embodiments that can be understood by those skilled in the art, and the above embodiments only describe preferred embodiments of the present disclosure, which are described in more detail and detail, but should not be construed as limiting the scope of the claims of the present disclosure. It should be noted that modifications, improvements and substitutions can be made by those skilled in the art without departing from the spirit of the application, which fall within the scope of the present application.
Claims (6)
1. A method for shortening the observation time of coal-bed gas pressure measurement, the method for shortening the observation time of coal-bed gas pressure measurement being realized by a device for shortening the observation time of coal-bed gas pressure measurement, characterized in that: the device for shortening the coal seam gas pressure measurement observation time comprises a grouting mechanism, a capsule (5) positioned in a drill hole, wherein the surface of the capsule (5) is wrapped with a light, flexible and water-absorbing material, and a plurality of spray heads (4) are arranged at the top end of the capsule (5); and
the pressure measuring mechanism is internally provided with a pressure measuring pipe (12) for pushing the capsule (5) to move in the drill hole; and
the water delivery mechanism is internally provided with a water injection pipe (9), and the water outlet end of the water injection pipe (9) is connected with the lower end of the capsule (5) and is used for driving the spray head (4) to spray water to the light, flexible and water-absorbing material; and
the expansion liquid conveying mechanism is internally provided with a liquid injection pipe (14), the liquid outlet end of the liquid injection pipe (14) is connected with the lower end of the capsule (5) and is used for conveying expansion liquid to the capsule (5) and driving the capsule (5) to expand and be attached to a coal wall so as to further obstruct the gas flow in the coal layer;
the outline of the spray heads (4) is designed into an umbrella shape and is uniformly distributed at the top of the capsule (5) for reducing the diameter of water flow sprayed by the spray heads (4);
the method for observing the time is realized by a device for shortening the coal bed gas pressure measurement observing time and comprises the following steps of:
s1, pushing a capsule (5) positioned in a drill hole to a designated position by a pressure measuring tube (12);
s2, starting a water delivery mechanism, enabling water to enter the top end of the capsule (5) through a water injection pipe (9) and overflow through a spray head (4), wetting light and flexible materials wrapped on the side face of the capsule (5), and closing the water delivery mechanism;
s3, starting an expansion liquid conveying mechanism, enabling expansion liquid to enter the capsule (5) through the liquid injection pipe (14), forcing the capsule (5) to expand, enabling flexible materials on the side face of the capsule (5) to cling to the coal wall, and preventing gas of a coal bed from flowing towards a drilling direction;
s4, starting a grouting mechanism to enter a drilled hole, when the grouting rises to the front end of a pressure measuring pipe (12) in the pressure measuring mechanism, allowing the grouting to flow out from the lower end under the action of gravity, closing the grouting mechanism, and stopping grouting to wait for solidification of the grouting;
s5, releasing part of the expansion liquid by adjusting the expansion liquid conveying mechanism, properly reducing the diameter of the capsule (5), separating the flexible material on the side surface of the capsule (5) from the coal wall, reading the pressure value by the pressure measuring mechanism, and waiting for the balance of the gas flow field.
2. A method for reducing observation time for coal seam gas pressure measurement according to claim 1, wherein: the grouting mechanism comprises:
the grouting device comprises a grouting pipe (8), wherein a grouting outlet at one end of the grouting pipe (8) is positioned in a drilling hole; and
and the grouting pump (7) is used for conveying the slurry into the drill hole, and a slurry inlet at the other end of the grouting pipe (8) is communicated with the grouting pump (7).
3. A method for reducing observation time for coal seam gas pressure measurement according to claim 1, wherein: the pressure measuring mechanism is further provided with a pressure gauge (11), the pressure measuring pipe (12) is connected with the pressure gauge (11), the front end and the lower end of the pressure measuring pipe (12) are respectively provided with a plurality of liquid inlet holes and liquid outlet holes, and slurry in the drilled holes enters the pressure measuring pipe (12) through the liquid inlet holes and flows out of the liquid outlet holes.
4. A method for reducing observation time for coal seam gas pressure measurement according to claim 1, wherein: the water delivery mechanism is also provided with a first pressure testing pump (10), and the water inlet end of the water injection pipe (9) is connected with the first pressure testing pump (10).
5. A method for reducing observation time for coal seam gas pressure measurement according to claim 1, wherein: the expansion liquid conveying mechanism is further provided with a second pressure testing pump (13), and the liquid inlet end of the liquid injection pipe (14) is connected with the second pressure testing pump (13).
6. A method for reducing observation time for coal seam gas pressure measurement according to claim 2, wherein: still be provided with baffle (6) in the slip casting mechanism, baffle (6) are installed in the drill hole's drill way department for prevent thick liquid from flowing backwards and overflowing from drill way department, slip casting pipe (8), water injection pipe (9), piezometer tube (12) and notes liquid pipe (14) all insert and close and connect on baffle (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111054709.6A CN113818921B (en) | 2021-09-09 | 2021-09-09 | Device and method for shortening coal bed gas pressure measurement observation time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111054709.6A CN113818921B (en) | 2021-09-09 | 2021-09-09 | Device and method for shortening coal bed gas pressure measurement observation time |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113818921A CN113818921A (en) | 2021-12-21 |
| CN113818921B true CN113818921B (en) | 2023-08-15 |
Family
ID=78914313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111054709.6A Active CN113818921B (en) | 2021-09-09 | 2021-09-09 | Device and method for shortening coal bed gas pressure measurement observation time |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113818921B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101344514A (en) * | 2008-09-01 | 2009-01-14 | 中国矿业大学 | Fast prediction method for crossdrift and pitshaft coal uncovering burst fatalness |
| CN201671588U (en) * | 2010-04-30 | 2010-12-15 | 华北科技学院 | Pressure measuring hole sealing apparatus for downward long hole |
| CN202788811U (en) * | 2012-08-17 | 2013-03-13 | 北京中矿天安科技发展有限公司 | Integrated active coal-bed gas pressure testing system |
| CN103075148A (en) * | 2013-02-19 | 2013-05-01 | 中国矿业大学 | Method and device for fast measuring coal bed gas pressure through upward remote-distance hole drilling |
| CN103075149A (en) * | 2013-02-19 | 2013-05-01 | 中国矿业大学 | Method and device for quickly determining gas pressure of coal bed in downward superdeep borehole |
| CN203050790U (en) * | 2013-01-22 | 2013-07-10 | 中国矿业大学 | Testing device for predicting coal bed released gas expansion energy |
| CN203476320U (en) * | 2013-09-22 | 2014-03-12 | 安徽理工大学 | Device for simultaneously determining pressure of coal bed gas through capsule grouting |
| CN103742129A (en) * | 2013-12-30 | 2014-04-23 | 中国矿业大学 | Method for drilling holes on soft coal seam to measure coal seam gas pressure |
| CN105756599A (en) * | 2016-04-29 | 2016-07-13 | 史买林 | Coal mine two-end gas plug and middle water seal layer penetrating drill hole sealing device and method |
| CN108756804A (en) * | 2018-06-26 | 2018-11-06 | 山西天地王坡煤业有限公司 | Mash gas pumping drilling hole sealing device |
| CN110080717A (en) * | 2019-06-17 | 2019-08-02 | 中国矿业大学 | A kind of gas pressure measurement method of horizontal drilling rapid hole sealing |
| CN110608012A (en) * | 2019-08-30 | 2019-12-24 | 贵州大学 | Gas hole packer with pressure relief function |
| CN111139045A (en) * | 2019-12-20 | 2020-05-12 | 煤炭科学技术研究院有限公司 | Gas pressure measurement drilling hole filling sealing material and using method thereof |
| CN212454529U (en) * | 2020-05-19 | 2021-02-02 | 重庆工程职业技术学院 | Integrative device of gas drainage hole sealing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7665534B2 (en) * | 2006-01-11 | 2010-02-23 | Besst, Inc. | Zone isolation assembly for isolating and testing fluid samples from a subsurface well |
-
2021
- 2021-09-09 CN CN202111054709.6A patent/CN113818921B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101344514A (en) * | 2008-09-01 | 2009-01-14 | 中国矿业大学 | Fast prediction method for crossdrift and pitshaft coal uncovering burst fatalness |
| CN201671588U (en) * | 2010-04-30 | 2010-12-15 | 华北科技学院 | Pressure measuring hole sealing apparatus for downward long hole |
| CN202788811U (en) * | 2012-08-17 | 2013-03-13 | 北京中矿天安科技发展有限公司 | Integrated active coal-bed gas pressure testing system |
| CN203050790U (en) * | 2013-01-22 | 2013-07-10 | 中国矿业大学 | Testing device for predicting coal bed released gas expansion energy |
| CN103075148A (en) * | 2013-02-19 | 2013-05-01 | 中国矿业大学 | Method and device for fast measuring coal bed gas pressure through upward remote-distance hole drilling |
| CN103075149A (en) * | 2013-02-19 | 2013-05-01 | 中国矿业大学 | Method and device for quickly determining gas pressure of coal bed in downward superdeep borehole |
| CN203476320U (en) * | 2013-09-22 | 2014-03-12 | 安徽理工大学 | Device for simultaneously determining pressure of coal bed gas through capsule grouting |
| CN103742129A (en) * | 2013-12-30 | 2014-04-23 | 中国矿业大学 | Method for drilling holes on soft coal seam to measure coal seam gas pressure |
| CN105756599A (en) * | 2016-04-29 | 2016-07-13 | 史买林 | Coal mine two-end gas plug and middle water seal layer penetrating drill hole sealing device and method |
| CN108756804A (en) * | 2018-06-26 | 2018-11-06 | 山西天地王坡煤业有限公司 | Mash gas pumping drilling hole sealing device |
| CN110080717A (en) * | 2019-06-17 | 2019-08-02 | 中国矿业大学 | A kind of gas pressure measurement method of horizontal drilling rapid hole sealing |
| CN110608012A (en) * | 2019-08-30 | 2019-12-24 | 贵州大学 | Gas hole packer with pressure relief function |
| CN111139045A (en) * | 2019-12-20 | 2020-05-12 | 煤炭科学技术研究院有限公司 | Gas pressure measurement drilling hole filling sealing material and using method thereof |
| CN212454529U (en) * | 2020-05-19 | 2021-02-02 | 重庆工程职业技术学院 | Integrative device of gas drainage hole sealing |
Non-Patent Citations (1)
| Title |
|---|
| 上行含水钻孔精准测压新技术;魏风清;杜晓奇;温帅博;韩世英;;煤矿安全(第01期);86-89页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113818921A (en) | 2021-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106894774B (en) | A kind of underbalance replacement pipe string technology method | |
| CN109184672B (en) | Coal seam depression angle drilling gas pressure measuring device and pressure measuring method | |
| CN203452801U (en) | Sectional pulse grouting system for tunnel construction | |
| CN101198764B (en) | Fluid recovery | |
| US20220364468A1 (en) | Supercritical fluid drilling and blasting integrated double-arm drill jumbo and control method thereof | |
| CN113818921B (en) | Device and method for shortening coal bed gas pressure measurement observation time | |
| CN109238053A (en) | It is a kind of depth coal seam explosion water filling hole sealing device and its explosion water filling method | |
| CN101230778B (en) | Technique of gas drilling post-infusion cement slurry | |
| CN101982747A (en) | Method for calibrating synchronous grouting quantity and grouting pressure of shield | |
| CN111648789A (en) | Double-pipe hole bottom grouting device and installation and grouting method thereof | |
| CN111140252A (en) | Circulating layering slip casting device | |
| CN114763743A (en) | Device and method for mounting deep hole micro-seismic probe under coal mine | |
| CN211342873U (en) | Drilling and pipe fixing device | |
| CN211012690U (en) | Anti water impact blasting structure of high-pressure water-rich section of tunnel engineering | |
| CN209724320U (en) | Boring observation instrument mounting assembly | |
| CN114482914A (en) | Plugging device for oil-water well and using method | |
| CN207586226U (en) | A kind of biaxial loadings gas pumping gas leakage analogue experiment installation | |
| CN215004884U (en) | Drilling constant head water injection tester | |
| CN110863794A (en) | Drilling and pipe fixing device | |
| CN217681700U (en) | Coal mine underground deep hole micro-seismic probe mounting device | |
| CN110513142A (en) | The polyurethane sealing aperture apparatus and its construction method of Underwell anti-injection hole anti-leak | |
| CN220748187U (en) | Concentric tube negative pressure sand washing machine | |
| CN110984978A (en) | Low-pressure natural gas well leakage speed mine field rapid evaluation device and method | |
| CN105715227B (en) | Self-sealing hydraulic pressure for up pressure measuring drill hole removes device and application method certainly | |
| CN110043307A (en) | A kind of tide basin biogas method for releasing |
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 |