CN113818921A - Device and method for shortening observation time of coal bed gas pressure measurement - Google Patents
Device and method for shortening observation time of coal bed gas pressure measurement Download PDFInfo
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- CN113818921A CN113818921A CN202111054709.6A CN202111054709A CN113818921A CN 113818921 A CN113818921 A CN 113818921A CN 202111054709 A CN202111054709 A CN 202111054709A CN 113818921 A CN113818921 A CN 113818921A
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- capsule
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- drill hole
- grouting
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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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- 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
Abstract
The embodiment of the invention discloses a device and a method for shortening the measurement and observation time of coal bed gas pressure, which relate to the technical field of coal bed gas pressure measurement and mainly solve the problems of slow gas flow field balance speed and long observation time of the existing coal bed gas pressure measurement device and method, and comprise a grouting mechanism, a capsule positioned in a drill hole, a pressure measurement mechanism, a water delivery mechanism and an expansion liquid delivery mechanism, wherein the surface of the capsule is wrapped with light, flexible and water-absorbing materials, the top end of the capsule is provided with a plurality of spray heads, a pressure measurement pipe in the pressure measurement mechanism is delivered into the capsule at the front end of the drill hole, so that the pressure measurement mechanism can be tightly attached to the coal wall around the drill hole before the pressure measurement drill hole is sealed, the gas of the coal bed around the drill hole is prevented from flowing out to the drill hole, the pressure measurement mechanism can occupy most of space after the pressure measurement drill hole is sealed, the volume of the pressure measurement chamber is reduced, and the gas amount flowing into the pressure measurement chamber from the coal wall around the drill hole is reduced, the balance speed of the gas flow field can be accelerated, and the observation time is shortened.
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 observation time of coal bed gas pressure measurement.
Background
The coal bed gas pressure is a key index for evaluating the risk of the mine gas disaster (the critical value of the gas pressure for determining the lower boundary of a gas weathering zone is 0.1-0.15MPa, and the critical value of the gas pressure for identifying the coal bed outburst risk is 0.74 MPa), so that the acquisition of reliable coal bed gas pressure data is a key link for preventing and treating the mine gas disaster.
The method for measuring the gas pressure of the coal bed by drilling, grouting and sealing holes through the cross layer is a commonly used method for measuring the gas pressure of the coal bed; however, about 10 hours are required from the completion of drilling construction to the time when the slurry is solidified and the upper surface pressure measurement is started; during the period, the gas of the coal seam around the drill hole is in a natural discharge state, more gas is released, and the later gas flow field balance time is longer directly caused; the direct measurement method of the gas pressure of the coal seam in the coal mine (AQ/T1047-.
In order to shorten the observation time of coal bed gas pressure measurement, the most effective method at present is to actively supplement gas, namely, gas is filled into a drill hole to make up for the gas discharge loss before slurry solidification. A direct measurement method for coal mine underground coal seam gas pressure (AQ/T1047-: when the coal bed gas pressure is less than 4MPa, active pressure measurement needs to be observed for 5-10 days, and the observation time of 5-10 days is still longer for field engineering application (particularly rock cross-cut coal uncovering engineering).
Therefore, it is very urgent to explore new measures for accelerating the gas flow field balance speed, shorten the observation time of coal bed gas pressure measurement, and relieve the restriction of the overlong gas pressure measurement period on the project progress and production connection.
Disclosure of Invention
An object of the embodiments of the present application is to provide an apparatus and a method for shortening observation time for measuring gas pressure in a coal seam, so as to solve the problems mentioned in the foregoing 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 capsule is positioned in the drill hole, 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 used 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 used for driving the spray head 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, and the liquid outlet end of the liquid injection pipe is connected with the lower end of the capsule, is used for conveying expansion liquid to the capsule, is used for driving the capsule to expand and be attached to the coal wall, and further blocks the gas in the coal seam from flowing.
As a further aspect of the present application: the shape profiles of the plurality of nozzles are all designed to be umbrella-shaped and are uniformly distributed on the top of the capsule for reducing the diameter of water flow sprayed by the nozzles.
As a still further aspect of the present application: the slip casting mechanism includes:
the grout outlet at one end of the grouting pipe is positioned in the drill hole; and
and the slurry inlet at the other end of the grouting pipe is communicated with the grouting pump and used for conveying slurry into the drill hole.
As a still further aspect of the present 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 inlet holes and liquid outlet holes, and slurry in the drill hole enters the pressure measuring pipe through the liquid inlet holes and flows out of the liquid outlet holes.
As a still further aspect of the present 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 a still further aspect of the present application: and the expansion liquid conveying mechanism is also provided with a second pressure test pump, and the liquid inlet end of the liquid injection pipe is connected with the second pressure test pump.
As a still further aspect of the present application: still be provided with the baffle in the slip casting mechanism, the baffle is installed in the orifice department of drilling for prevent that the thick liquid from flowing backwards from the orifice and overflowing, slip casting pipe, water injection pipe, pressure-measuring pipe and notes liquid pipe all insert to close and connect on the baffle.
A method for shortening observation time of coal bed gas pressure measurement, which comprises the device for shortening the observation time of the coal bed gas pressure measurement in any one of the above schemes, and comprises the following steps:
s1, pushing the capsule in the drill hole to an appointed position by a piezometer tube;
s2, starting the water delivery mechanism, enabling water to enter the top end of the capsule through the water injection pipe and overflow through the spray head, wetting the 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 the expansion liquid to enter the capsule through the liquid injection pipe, forcing the capsule to expand, enabling the flexible material on the side face of the capsule to be tightly attached to the coal wall, and preventing gas of the coal seam from flowing towards the direction of the drill hole;
s4, starting a grouting mechanism to enable grout to enter the drilled hole, enabling the grout entering from the front end of the pressure measuring pipe to flow out from the lower end under the action of gravity when the grout rises to the front end of the pressure measuring pipe in the pressure measuring mechanism, closing the grouting mechanism, and stopping grouting to wait for the grout to solidify;
and 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 a pressure value by a pressure measuring mechanism, and waiting for the balance of a gas flow field.
Compared with the prior art, the beneficial effects of this application are:
the capsule fed into the front end of the drill hole can be tightly attached to the coal wall around the drill hole before the pressure measuring drill hole is sealed, so that gas in the coal layer around the drill hole is prevented from flowing out to the drill hole, and the capsule can occupy most of space of the pressure measuring chamber after the pressure measuring drill hole is sealed, so that the volume of the pressure measuring chamber is reduced, the gas amount flowing into the pressure measuring chamber from the coal wall around the drill hole is reduced, the balance speed of a gas flow field can be accelerated, the observation time is shortened, and the problems of low gas flow field balance speed and long observation time existing in the conventional coal bed gas pressure measuring device and method are solved.
Drawings
FIG. 1 is a schematic diagram of an apparatus and method for shortening observation time of coal bed gas pressure measurement according to the present invention.
In the figure: 1-roof strata; 2-coal bed; 3-a floor rock layer; 4-a spray head; 5-capsule preparation; 6-a baffle plate; 7-grouting pump; 8-grouting pipe; 9-a water injection pipe; 10-a first pressure test pump; 11-pressure gauge; 12-piezometric tube; 13-a second pressure test pump; 14-liquid injection pipe.
Detailed Description
Referring to fig. 1, the technical solution in the embodiment of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present application, and the embodiment provides an apparatus for shortening observation time of coal seam gas pressure measurement, including a grouting mechanism, and further including:
the capsule 5 is positioned in the drill hole, the surface of the capsule 5 is wrapped with light, flexible and water-absorbing materials, 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 used for driving the spray head 4 to spray water to the light, flexible and water-absorbing material; and
and the expansion liquid conveying mechanism is internally provided with an injection pipe 14, the liquid outlet end of the injection pipe 14 is connected with the lower end of the capsule 5, and the expansion liquid conveying mechanism is used for conveying expansion liquid to the capsule 5 and driving the capsule 5 to expand to be attached to the coal wall so as to block the flow of gas in the coal seam.
In the technical scheme, a worker constructs a drill hole from the bottom rock stratum 3 to the coal seam 2 according to requirements, the coal seam 2 is located between the bottom rock stratum 3 and the top rock stratum, after the drill hole is constructed in place, the capsule 5 is pushed to the coal seam 2 by using the pressure measuring pipe 12, the pressure measuring pipe 12 is a rigid hollow pipe and has high strength, and the capsule 5 can be sent to the front of the drill hole by using the pressure measuring pipe 12.
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 of feeding into a drill hole can be reduced by the light weight, the flexibility can enable the capsule to be tightly attached to a coal wall, and the water absorption can enhance the inhibition effect of the capsule on gas emission from the coal wall.
Referring to fig. 1, further, when the liquid is injected and expanded, the side surface of the capsule 5 can be tightly attached to the coal wall, so that gas in the coal seam 2 around the drill hole is prevented from flowing out of the drill hole, and after the expansion liquid is slightly released, the capsule shrinks, the side surface is separated from the coal wall, and occupies most space of the pressure measuring chamber.
Referring to fig. 1, further, the plurality of nozzles 4 are all designed to have an "umbrella" shape, and are uniformly distributed on the top of the capsule 5, so as to reduce the diameter of the water flow sprayed from the nozzles 4, convert the incoming water flow into a thin flow, and ensure that the wrapping material on the side of the capsule 5 can uniformly absorb water.
Referring to fig. 1, as an embodiment of the present application, a pressure gauge 11 is further disposed on the pressure measuring mechanism, the pressure measuring tube 12 is connected to 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 slurry in the drill hole enters the pressure measuring tube 12 through the liquid inlet holes and flows out of 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 a 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 liquid conveying mechanism, and a liquid inlet end of the liquid injection pipe 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, wherein a grout outlet at one end of the grouting pipe 8 is positioned in the drill hole; and
and the grouting pump 7 is communicated with the grouting pump 7 through a grouting inlet at the other end of the grouting pipe 8 and is used for conveying grout into the drilled hole.
Referring to fig. 1, further, a baffle 6 is further arranged in the grouting mechanism, the baffle 6 is installed at an orifice of a drilled hole and used for preventing 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 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 observation time of coal bed gas pressure measurement, comprising an apparatus for shortening observation time of coal bed gas pressure measurement as described in any one of the above embodiments, comprising the steps of:
s1, the pressure measuring pipe 12 pushes the capsule 5 in the drill hole to a specified position;
s2, starting the water delivery mechanism, enabling water to enter the top end of the capsule 5 through the water injection pipe 9 and overflow through the spray head 4, wetting the light and flexible material wrapped on the side face of the capsule 5, and closing the water delivery mechanism;
s3, starting an expansion liquid conveying mechanism, enabling the expansion liquid to enter the capsule 5 through the liquid injection pipe 14, forcing the capsule 5 to expand, enabling the flexible material on the side face of the capsule 5 to be tightly attached to the coal wall, and preventing gas of the coal seam from flowing towards the direction of the drill hole;
s4, starting a grouting mechanism to enable grout to enter the drilled hole, enabling the grout entering from the front end of the pressure measuring pipe 12 to flow out from the lower end under the action of gravity when the grout rises to the front end of the pressure measuring pipe 12 in the pressure measuring mechanism, closing the grouting mechanism, and stopping grouting to wait for the grout to solidify;
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 a pressure measuring mechanism, and waiting for the balance of the gas flow field.
When the method is used, before grouting and hole sealing, the capsule 5 is conveyed to the position of the coal bed 2 in the drill hole, high-pressure liquid is injected into the capsule 5, the capsule 5 expands and clings to the coal wall around the drill hole to prevent gas of the coal bed around the drill hole from flowing out of the drill hole, and the gas loss is reduced, so that a better basic condition is created for the gas flow field balance after hole sealing (injection: a certain volume of gas flows out of the coal bed in unit time before hole sealing, and even if high-pressure gas is injected for compensation after hole sealing, the time required by compensated gas after seepage, adsorption and balance is far longer than the unit discharge time before hole sealing);
after grouting, slurry solidification and pressure gauge 11 installation, the liquid pressure in the capsule 5 is slightly reduced, the capsule 5 is separated from the coal wall, the borehole pressure measuring chamber is convenient to communicate with the coal wall, but the capsule 5 still occupies most space of the pressure measuring chamber, so that the volume of the pressure measuring chamber is reduced, in the gas flow field balancing process, the gas amount which is rushed from the coal wall around the borehole to the pressure measuring chamber is reduced, the balancing speed of the gas flow field can be accelerated, and the observation time is shortened.
In conclusion, the capsule 5 fed to the front end of the drill hole can be tightly attached to the coal wall around the drill hole before the pressure measuring drill hole is sealed, so that gas in the coal layer around the drill hole is prevented from flowing out to the drill hole, and can occupy most of space of the pressure measuring chamber after the pressure measuring drill hole is sealed, so that the volume of the pressure measuring chamber is reduced, the amount of gas flowing into the pressure measuring chamber from the coal wall around the drill hole is reduced, the balance speed of a gas flow field can be accelerated, the observation time is shortened, and the problems of low gas flow field balance speed and long observation time in the conventional coal layer gas pressure measuring device and method are solved.
It should be noted that, although the present specification describes embodiments, each embodiment does not include only a single technical solution, and such description of the specification is only for clarity, and those skilled in the art should take the specification as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art, and the above-mentioned embodiments only express the preferred embodiments of the technical solutions, and the description thereof is more specific and detailed, but should not be construed as limiting the scope of the claims of the technical solutions. It should be noted that, for those skilled in the art, without departing from the concept of the present application, several modifications, improvements and substitutions can be made, which are all within the protection scope of the present technical solution.
Claims (8)
1. 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 capsule (5) is positioned in the drill hole, the surface of the capsule (5) is wrapped with light, flexible and water-absorbing materials, 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) used 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 used for conveying expansion liquid to the capsule (5) and driving the capsule (5) to expand to be attached to the coal wall, and therefore gas in the coal seam is blocked from flowing.
2. The device for shortening the observation time of coal bed gas pressure measurement according to claim 3, wherein the plurality of nozzles (4) are all designed to be umbrella-shaped in outline and uniformly distributed on the top of the capsule (5) for reducing the diameter of the water flow sprayed by the nozzles (4).
3. The apparatus of claim 1, wherein the grouting mechanism comprises:
the grouting pipe (8), the grout outlet of one end of the grouting pipe (8) is positioned in the drill hole; and
and the grouting pump (7) is communicated with the grouting pump (7) through a grouting inlet at the other end of the grouting pipe (8) and is used for conveying grout into the drilled hole.
4. The device for shortening the observation time of coal bed 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 drill hole enters the pressure measuring pipe (12) through the liquid inlet holes and flows out of the liquid outlet holes.
5. The device for shortening observation time of coal bed gas pressure measurement according to claim 1, wherein the water delivery mechanism is further provided with a first pressure test pump (10), and a water inlet end of the water injection pipe (9) is connected with the first pressure test pump (10).
6. The device for shortening observation time of coal bed gas pressure measurement according to claim 1, wherein the expansion liquid conveying mechanism is further provided with a second pressure test pump (13), and a liquid inlet end of the liquid injection pipe (14) is connected with the second pressure test pump (13).
7. The device for shortening the observation time of coal bed gas pressure measurement according to claim 3, wherein a baffle (6) is further arranged in the grouting mechanism, the baffle (6) is installed at the orifice of the drilled hole and used for preventing slurry from flowing back and overflowing from the orifice, and 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 inserted manner.
8. A method for shortening the observation time of coal bed gas pressure measurement, comprising using an apparatus for shortening the observation time of coal bed gas pressure measurement according to any one of claims 1 to 7, comprising the steps of:
s1, the pressure measuring pipe (12) pushes the capsule (5) in the drill hole to a specified position;
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 the 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 the expansion liquid to enter the capsule (5) through the liquid injection pipe (14), forcing the capsule (5) to expand, enabling the flexible material on the side surface of the capsule (5) to be tightly attached to the coal wall, and preventing gas of the coal seam from flowing towards the direction of the drill hole;
s4, starting a grouting mechanism to enable grout to enter the drilled hole, enabling the grout entering from the front end of the pressure measuring pipe (12) to flow out from the lower end under the action of gravity when the grout rises to the front end of the pressure measuring pipe (12) in the pressure measuring mechanism, closing the grouting mechanism, and stopping grouting to wait for the grout to solidify;
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 a pressure measuring mechanism, and waiting for the balance of the gas flow field.
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| CN202111054709.6A CN113818921B (en) | 2021-09-09 | 2021-09-09 | Device and method for shortening coal bed gas pressure measurement observation time |
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070158062A1 (en) * | 2006-01-11 | 2007-07-12 | Besst,Inc. | Zone isolation assembly for isolating and testing fluid samples from a subsurface well |
| 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 |
| 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 |
| 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 |
| 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 |
-
2021
- 2021-09-09 CN CN202111054709.6A patent/CN113818921B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070158062A1 (en) * | 2006-01-11 | 2007-07-12 | Besst,Inc. | Zone isolation assembly for isolating and testing fluid samples from a subsurface well |
| 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 |
|---|
| 魏风清;杜晓奇;温帅博;韩世英;: "上行含水钻孔精准测压新技术", 煤矿安全, no. 01, pages 86 - 89 * |
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| CN113818921B (en) | 2023-08-15 |
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