CN201381872Y - Hole-sealing pressure measuring device - Google Patents
Hole-sealing pressure measuring device Download PDFInfo
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- CN201381872Y CN201381872Y CN200920106178U CN200920106178U CN201381872Y CN 201381872 Y CN201381872 Y CN 201381872Y CN 200920106178 U CN200920106178 U CN 200920106178U CN 200920106178 U CN200920106178 U CN 200920106178U CN 201381872 Y CN201381872 Y CN 201381872Y
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- expanding material
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Abstract
The utility model discloses a hole-sealing pressure measuring device, which comprises a pressure gage, a front-mounted baffle, a first rear-mounted baffle, a second rear-mounted baffle, a piezometric tube, a grouting pipe and a return pipe, wherein an expansion material is arranged on the upper surface of the front-mounted baffle, another expansion material is arranged between the first rear-mounted baffle and the second rear-mounted baffle, the piezometeric tube penetrates through the expansion material, the front-mounted baffle, the first rear-mounted baffle, the other expansion material and the second rear-mounted baffle sequentially, a closed portion of the piezometric tube extending out of the second rear-mounted baffle plate is provided with an air inlet, an opening portion of the piezometric tube extending out of the expansion material is connected to the pressure gage, the grouting pipe and the return pipe penetrate through the expansion material and the front-mounted baffle sequentially, one end of the grounding pipe and one end of the return pipe extend out of the expansion material while the other ends thereof are arranged between the front-mounted baffle and the first rear-mounted baffle. The hole-sealing pressure measuring device can effectively seal pressure measuring holes and realizes measuring gas pressure of coal seams accurately.
Description
Technical field
The utility model relates to a kind of sealing of hole manometric technique, relates in particular to a kind of sealing of hole pressure tester of measuring coal-bed gas pressure under coal mine, belongs to the coal production technical field.
Background technology
The gas pressure in coal seam is one of mine gas basic parameter, and it is for definite coal seam gas-bearing capacity, carries out the mine gas improvement of gushing out, and the outstanding work such as control of gas drainage under suction and coal and gas all have crucial meaning.In the long-term practice of administering mine gas, developed the determinator of many down-hole coal bed gas pressures, accuracy of measurement is low, the shortcoming of poor reliability but wherein most of determinator exists.
Particularly, when under coal mine, carrying out determination of coal seam gas pressure, need in coal body (or rock mass), impose the boring in different hole depths, aperture, and pressure testers such as piezometer tube and pressure meter are installed.Because the vibrations that produce in the tunneling process of colliery, press extraneous factor such as impact, can make coal body (or rock mass) produce a large amount of cracks, in order to guarantee to record the accuracy of gas pressure, just must carry out shutoff to these cracks.Further, when using common hole sealing device to measure gas pressure,, the crack shutoff imprecision of coal body (or rock mass) can be caused, coal-bed gas pressure can not be accurately measured if grouting pressure is too small; If grouting pressure is excessive, slurries may puncture the coal body around the pressure measuring chamber baffle plate and flow in the pressure measuring chamber, and then can not accurately measure coal-bed gas pressure.Up to now, how accurately determining coal-bed gas pressure remains the control of coalmine gas aspect one of problem to be solved is arranged.
Moreover, generally, all need injecting paste material is filled with in pressure measurement boring for sealing of hole is carried out in pressure measurement boring effectively, and in practice owing to just judge by subjective experience whether injecting paste material is filled with in the pressure measurement boring, tend to make injecting paste material excessive, caused the waste of injecting paste material.
The utility model content
The purpose of this utility model is the defective at prior art, and a kind of sealing of hole pressure tester is provided, and has the high advantage of accuracy of measurement and reliability.
For achieving the above object, the utility model provides a kind of sealing of hole pressure tester, comprises pressure meter, wherein also comprises:
Preposition baffle plate is provided with an expanding material at preposition baffle plate upper surface;
The first rearmounted baffle plate and the second rearmounted baffle plate are provided with another expanding material between the described first rearmounted baffle plate and the second rearmounted baffle plate;
Piezometer tube, successively through a described expanding material, preposition baffle plate, the first rearmounted baffle plate, another expanding material and the second rearmounted baffle plate, the enclosure portion that described piezometer tube exposes the described second rearmounted baffle plate is provided with air inlet, and the opening portion that described piezometer tube exposes a described expanding material connects described pressure meter;
Grouting Pipe and return pipe, successively through a described expanding material, preposition baffle plate, an end is exposed at outside the described expanding material, and the other end places between the described preposition baffle plate and the described first rearmounted baffle plate.
Further, a kind of sealing of hole pressure tester of the present utility model also comprises three way cock, and described three way cock one end connects the draining relief valve, and the other end connects described pressure meter, and another end connects the opening portion that described pressure measurement tracheae exposes a described expanding material.
As shown from the above technical solution, the expansion of another expanding material of the utility model has reduced gas in the pressure measurement air chamber from the leakage in space between another expanding material and the coal seam, filling with injecting paste material between the preposition baffle plate and the first rearmounted baffle plate has avoided gas by being leaked in the outside air, the structure of having avoided the injecting paste material of slip casting chamber to overflow by the expansion of an expanding material again, realized effective sealing of hole to pressure measurement boring, reached the purpose of accurate mensuration gas pressure, when avoiding the injecting paste material contaminated environment, realized saving the purpose of injecting paste material.
Description of drawings
Fig. 1 is the structural representation of the utility model sealing of hole pressure tester first embodiment;
Fig. 2 is the structural representation of the utility model sealing of hole pressure tester second embodiment;
Fig. 3 is installed in the schematic diagram of on-site measurement gas pressure for the sealing of hole pressure tester of the utility model second embodiment.
Description of reference numerals:
The preposition baffle plate 2-one expanding material 3-of the 1-first rearmounted baffle plate
4-second rearmounted another expanding material of baffle plate 5-6-piezometer tube
7-Grouting Pipe 8-return pipe 9-three way cock
10-pressure meter 11-draining relief valve 12-coal seam
13-pressure measurement air chamber 14-slip casting chamber
The specific embodiment
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Fig. 1 is the structural representation of the utility model sealing of hole pressure tester first embodiment.As shown in Figure 1, sealing of hole pressure tester of the present utility model mainly comprises preposition baffle plate 1, the first rearmounted baffle plate 3, the second rearmounted baffle plate 4, piezometer tube 6, Grouting Pipe 7 and return pipe 8, wherein an expanding material 2 is arranged on the upper surface of preposition baffle plate 1, another expanding material 5 is arranged between the first rearmounted baffle plate 3 and the second rearmounted baffle plate 4, piezometer tube 6 runs through an expanding material 2 successively, preposition baffle plate 1, the first rearmounted baffle plate 3, another expanding material 5 and the second rearmounted baffle plate 4, and the enclosure portion at the piezometer tube 6 that exposes the second rearmounted baffle plate 4 is provided with air inlet, and the opening portion that piezometer tube 6 exposes an expanding material 2 can connect pressure meter 10; Grouting Pipe 7 and return pipe 8 are successively through an expanding material 2, preposition baffle plate 1, and wherein an end is exposed at outside the expanding material 2, and the other end places between the preposition baffle plate 1 and the first rearmounted baffle plate 3, and these two ends all are opening.Preposition baffle plate 1, the first rearmounted baffle plate 3 and the second rearmounted baffle plate 4 are the thick circular steel plate of 3mm at least, and its diameter is slightly less than the diameter of pressure measurement boring in actual applications.Piezometer tube 6, Grouting Pipe 7 and return pipe 8, being diameter is the galvanized iron conduit of 4 scruples (being that industrial standard is DN15), its length is according to the actual grade decision of pressure measurement boring in actual applications, but Grouting Pipe 7 is longer than return pipe 8, be used in the slip casting process, if there is injecting paste material to overflow, judge that slip casting is full substantially from return pipe 8.Further, run through successively in an expanding material 2, preposition baffle plate 1, the first rearmounted baffle plate 3, another expanding material 5 and the second rearmounted baffle plate 4 at above-mentioned piezometer tube 6, preposition baffle plate 1, the first rearmounted baffle plate 3 and the second rearmounted baffle plate 4 are fixing with piezometer tube 6 by welding; In like manner, successively in an expanding material 2, preposition baffle plate 1, preposition baffle plate 1 is fixing with Grouting Pipe 7 and return pipe 8 by welding at Grouting Pipe 7 and return pipe 8.Selecting for use of one expanding material 2 and another expanding material 5, can select according to the water content in the pressure measurement boring, water content in pressure measurement boring hour can select for use polyurathamc as expanding material, and the water content in pressure measurement boring (is more common in the shaft construction process) more for a long time and can be selected for use and eats sea-tangle as expanding material.Here need to prove, in real work, pressure measurement boring is not being had before complete sealing of hole promptly do not fill with injecting paste material, the opening portion that piezometer tube 6 exposes an expanding material 2 is in always and does not connect pressure meter 10, to be used for keeping in the pressure measurement boring and the air pressure balance of external environment, and get rid of the ponding in the pressure measurement boring when to be passage need draining in pressure measurement boring with piezometer tube 6, after complete sealing of hole that pressure measurement is holed has promptly been filled with injecting paste material, the opening portion that piezometer tube 6 exposes an expanding material 2 connects pressure meter 10 again, is that passage is measured the gas pressure in the pressure measurement boring with piezometer tube 6.Further, the time that gas needs to gather than long in pressure measurement boring just can reach gas pressure intrinsic in the coal seam, during this period of time, pressure measurement boring meeting is filled up by the water that oozes out in the coal seam, be specially the blend pressure of water and methane gas this moment in the pressure measurement boring, record the accuracy of coal-bed gas pressure in order to guarantee pressure meter 10, need take off pressure meter 10, the operation that discharges water connects the pressure of pressure meter 10 with accurate mensuration coal-bed gas again.
In the present embodiment such scheme, the expansion of another expanding material of the utility model has reduced gas in the pressure measurement air chamber from the leakage in space between another expanding material and the coal seam, filling with injecting paste material between the preposition baffle plate and the first rearmounted baffle plate has avoided gas by being leaked in the outside air, the structure of having avoided the injecting paste material of slip casting chamber to overflow by the expansion of an expanding material again, can carry out sealing of hole effectively to pressure measurement boring, realized measuring exactly the purpose of the gas pressure in coal seam, it is simple in structure that this device is possessed, and cost is low, the characteristics of easy installation.
Fig. 2 is the structural representation of the utility model sealing of hole pressure tester second embodiment.On the basis of aforementioned first embodiment, the sealing of hole pressure tester of present embodiment also comprises three way cock 9, the one end connects draining relief valve 11, the other end connects pressure meter 10, another end is in the front and back of complete sealing of hole that pressure measurement is holed, all connect the opening portion that piezometer tube 6 exposes an expanding material 2 always, draining relief valve 11 is in open mode before complete sealing of hole is holed in pressure measurement, be used for keeping in the pressure measurement boring and the air pressure balance of external environment, and get rid of the ponding in the pressure measurement boring when to be passage need draining in pressure measurement boring with piezometer tube 6, draining relief valve 11 is in closed condition after complete sealing of hole is holed in pressure measurement, and is that passage is measured the gas pressure in the pressure measurement boring with pressure meter 10 with piezometer tube 6.According to the description in the previous embodiment, in like manner, the time that gas needs to gather than long in pressure measurement boring just can reach gas pressure intrinsic in the coal seam, during this period of time, pressure measurement boring meeting is filled up by the water that oozes out in the coal seam, be specially the blend pressure of water and methane gas this moment in the pressure measurement boring, in order to guarantee that pressure meter 10 records the accuracy of coal-bed gas pressure, need open the draining relief valve 11 that three way cock 9 one ends are connected, operation discharges water, treat water put do after, close the draining relief valve 11 that three way cock 9 one ends are connected, the pressure meter 10 that three way cock 9 other ends are connected is accurately measured the pressure of coal-bed gas.
In the present embodiment such scheme, except that the advantage of the foregoing description, utilized three way cock, saved after complete sealing of hole that pressure measurement is holed has promptly been filled with injecting paste material, the opening portion that piezometer tube exposes an expanding material connects manometric step again, can directly be that passage is used for measuring the interior gas pressure of pressure measurement boring by three way cock other end connection pressure meter with the piezometer tube.
Fig. 3 is installed in the schematic diagram of on-site measurement gas pressure for the sealing of hole pressure tester of the utility model second embodiment.As shown in Figure 3, the sealing of hole pressure tester of above-mentioned second embodiment is placed in the on-the-spot pressure measurement boring, pressure measurement boring is arranged in the coal seam 12, described pressure measurement boring is provided with and also can be arranged in the rock stratum according to concrete operation situation, pressure measurement boring is generally tiltedly and upward or tiltedly is arranged in coal seam 12 or the rock stratum, wherein the second rearmounted baffle plate 4 has constituted pressure measurement air chamber 13 with coal seam 12, and preposition baffle plate 1, first rearmounted baffle plate 3 and coal seam 12 have constituted slip casting chamber 14.In conjunction with in the foregoing description to the description of sealing of hole pressure tester, further, described sealing of hole pressure tester can be considered multi-segment structure according to function, corresponding first expanding material sealing of hole section of another expanding material 5 parts has wherein reduced gas in the pressure measurement air chamber 13 from the leakage in space between another expanding material 5 and the coal seam 12; The corresponding injecting paste material sealing of hole of part section between preposition baffle plate 1 and the first rearmounted baffle plate 3, fill with injecting paste material in slip casting chamber 14, described injecting paste material can be the cement mortar that has added water glass or accelerating admixture, further avoided the gas in the pressure measurement air chamber 13 to be leaked in the outside air, reached good sealing of hole purpose by slip casting chamber 14; One expanding material, the 2 corresponding second expanding material sealing of hole sections upward or tiltedly are arranged in coal seam 12 or the rock stratum because pressure measurement boring is generally tiltedly, are adding preposition baffle plate 1, and the injecting paste material of having avoided slip casting chamber 14 is because the outflow of action of gravity.
In practical engineering application, make the sealing of hole pressure tester in pressure measurement boring, measure gas pressure exactly, just must utilize the sealing of hole pressure tester that sealing of hole is effectively carried out in pressure measurement boring, specify the course of work with the sealing of hole pressure tester of second embodiment below the pressure measurement drilling and sealing.Before the sealing of hole pressure tester places on-the-spot pressure measurement boring, need piezometer tube 6 front ends to be flattened with "painted-face" character in opera or other instruments, to prevent ickings or other impurity in the pressure measurement boring air inlet is blocked, influence the circulation of gas; After the sealing of hole pressure tester is positioned over on-the-spot pressure measurement boring, utilize the sealing of hole pressure tester from bottom to up sealing of hole to be carried out in pressure measurement boring, to measure the gas pressure in coal seam 12: in the first expanding material sealing of hole section, place another expanding material 5 between the first rearmounted baffle plate 3 and the second rearmounted baffle plate 4 to run into interior water of pressure measurement boring and expansion rapidly, because the fixed distance between the first rearmounted baffle plate 3 and the second rearmounted baffle plate 4, therefore another expanding material 5 can only expand in peripherad coal seam 12, closely contacting of another expanding material 5 this moment with coal seam 12, reduced gas in the pressure measurement air chamber 13 from the leakage in space between another expanding material 5 and the coal seam 12, in injecting paste material sealing of hole section, utilize grouting pump that injecting paste material is injected slip casting chamber 14 through Grouting Pipe 7, wherein, inject a small amount of injecting paste material at first earlier, treat that this part injecting paste material is behind basic curing on the first rearmounted baffle plate 3, this process generally needs two to three hours, then continue slip casting again, as injecting paste material when return pipe 8 overflows, illustrate that slip casting chamber 14 filled with by injecting paste material substantially, can slow down injection speed this moment, after two to three minutes, the slip casting of slowly pressurizeing again, so repeat one to twice, just can think that slip casting chamber 14 filled with by injecting paste material fully, can stop slip casting, in the second expanding material sealing of hole section, in like manner, one expanding material 2 runs into the moisture of injecting paste material and expands rapidly, sealed the upper end of pressure measurement boring, avoided the injecting paste material of slip casting chamber 14 to overflow, just finished effective sealing of hole thus, for the gas pressure of accurately measuring the coal seam has been created condition to pressure measurement boring.Gas in the pressure measurement air chamber 13 can enter the inside of piezometer tube 6 by the air inlet of piezometer tube 6 leading portions, and is measured the pressure of gas by the pressure meter 10 that connects by three way cock 9 other ends.
In above-mentioned sealing of hole process, what time require emphasis in addition: the first, after the pressure measurement drilling construction was intact, the pressure wind with rig blew out drilling cuttings earlier, to guarantee the cleaning in the pressure measurement boring, was convenient to sealing of hole; The second, must guarantee that another expanding material 5 fully expands after, could be toward the slip casting chamber 14 interior injection injecting paste materials, enter pressure measurement air chamber 13 to prevent injecting paste material through another expanding material 5, influence the mensuration of gas pressure.The 3rd, before the injecting paste material of slip casting chamber 14 does not solidify fully, the draining relief valve 11 that three way cock 9 one ends connect is in open mode always, to avoid the gas in the pressure measurement air chamber 13 to gather rapidly, and cause because the gas that the gas pressure rising causes is gushed, also there not being completely crued injecting paste material inside to stay pore, cause the failure of pressure measurement sealing of hole.
In the present embodiment such scheme, leakage, slip casting chamber that expansion by another expanding material has reduced the gas space between another expanding material and coal seam in the pressure measurement air chamber are filled with injecting paste material and have been avoided the gas in the pressure measurement air chamber to be leaked to the outside air by the slip casting chamber, moreover avoided the injecting paste material of slip casting chamber to overflow by the expansion of an expanding material, realized effective sealing of hole to pressure measurement boring, reached the purpose of accurate mensuration gas pressure, when avoiding injecting paste material to fill with overflowing, realized saving the purpose of injecting paste material.
If specify the course of work to the pressure measurement drilling and sealing with the sealing of hole pressure tester of first embodiment, above-mentioned thirdly should be of emphasizing: before the injecting paste material of slip casting chamber solidifies fully, the opening portion that piezometer tube exposes an expanding material is in always and does not connect manometric state, to avoid the gas in the pressure measurement air chamber to gather rapidly, and cause because the gas that the gas pressure rising causes is gushed, also there not being completely crued injecting paste material inside to stay pore, cause the failure of pressure measurement sealing of hole.
It should be noted that at last: above embodiment is only in order to explanation the technical solution of the utility model but not limit it, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement the technical solution of the utility model, and these modifications or be equal to replacement and also can not make amended technical scheme break away from the spirit and scope of technical solutions of the utility model.
Claims (5)
1, a kind of sealing of hole pressure tester comprises pressure meter, it is characterized in that, also comprises:
Preposition baffle plate is provided with an expanding material at preposition baffle plate upper surface;
The first rearmounted baffle plate and the second rearmounted baffle plate are provided with another expanding material between the described first rearmounted baffle plate and the second rearmounted baffle plate;
Piezometer tube, successively through a described expanding material, preposition baffle plate, the first rearmounted baffle plate, another expanding material and the second rearmounted baffle plate, the enclosure portion that described piezometer tube exposes the described second rearmounted baffle plate is provided with air inlet, and the opening portion that described piezometer tube exposes a described expanding material connects described pressure meter;
Grouting Pipe and return pipe, successively through a described expanding material, preposition baffle plate, an end is exposed at outside the described expanding material, and the other end places between the described preposition baffle plate and the described first rearmounted baffle plate.
2, sealing of hole pressure tester according to claim 1, it is characterized in that, also comprise three way cock, described three way cock one end connects the draining relief valve, the other end connects described pressure meter, and another end connects the opening portion that described pressure measurement tracheae exposes a described expanding material.
3, sealing of hole pressure tester according to claim 1 and 2 is characterized in that, described preposition baffle plate, the first rearmounted baffle plate and the second rearmounted baffle plate are the thick circular steel plate of 3mm at least.
4, sealing of hole pressure tester according to claim 1 and 2 is characterized in that, described piezometer tube, Grouting Pipe and return pipe are the galvanized iron conduit that diameter is 4 scruples, and described Grouting Pipe is than overfall pipe range.
5, sealing of hole pressure tester according to claim 1 and 2 is characterized in that, a described expanding material and another expanding material are polyurathamc or edible sea-tangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920106178U CN201381872Y (en) | 2009-03-13 | 2009-03-13 | Hole-sealing pressure measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920106178U CN201381872Y (en) | 2009-03-13 | 2009-03-13 | Hole-sealing pressure measuring device |
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| CN201381872Y true CN201381872Y (en) | 2010-01-13 |
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| CN200920106178U Expired - Fee Related CN201381872Y (en) | 2009-03-13 | 2009-03-13 | Hole-sealing pressure measuring device |
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Cited By (21)
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| CN102268973A (en) * | 2010-06-04 | 2011-12-07 | 淮南矿业(集团)有限责任公司 | Hole sealing device |
| CN102536158A (en) * | 2010-12-10 | 2012-07-04 | 淮南矿业(集团)有限责任公司 | Uphole sealing method |
| CN102536213A (en) * | 2012-01-12 | 2012-07-04 | 山东科技大学 | Gas seepage range observation method for coal mine |
| CN102606143A (en) * | 2011-01-24 | 2012-07-25 | 河南理工大学 | Downward hole pressure measuring device and process |
| CN102889068A (en) * | 2012-11-02 | 2013-01-23 | 淮南矿业(集团)有限责任公司 | Hole sealing device and method |
| CN102900429A (en) * | 2012-09-27 | 2013-01-30 | 淮南矿业(集团)有限责任公司 | Device and method for inspecting gas drainage hole tightness |
| CN102943687A (en) * | 2012-12-03 | 2013-02-27 | 中国矿业大学 | Pressure equalizing and hole sealing method for gas extraction drilling |
| CN103075128A (en) * | 2012-12-31 | 2013-05-01 | 中国矿业大学 | Method for sealing gas extraction drill holes |
| CN105114030A (en) * | 2015-08-20 | 2015-12-02 | 中国矿业大学 | Gas extraction drilling non-solidification constant-pressure slurry hole sealing method |
| CN105422043A (en) * | 2015-12-15 | 2016-03-23 | 中国矿业大学 | Underground coal mine coal seam water injection and hydraulic fracturing drilled hole sealing method |
| CN105971590A (en) * | 2016-06-29 | 2016-09-28 | 陕西陕煤黄陵矿业有限公司 | Pressure measurement and extraction device for surrounding rock gas in mine and operation method |
| CN106609677A (en) * | 2015-10-22 | 2017-05-03 | 中铁二局集团有限公司 | A gas extraction and discharge construction method |
| CN106988730A (en) * | 2017-06-01 | 2017-07-28 | 华北科技学院 | Gas parametric measurement probe and its application method in a kind of coal seam |
| CN107014554A (en) * | 2017-06-01 | 2017-08-04 | 华北科技学院 | Gas parametric measurement probe in a kind of coal seam |
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| CN102268973A (en) * | 2010-06-04 | 2011-12-07 | 淮南矿业(集团)有限责任公司 | Hole sealing device |
| CN102536158B (en) * | 2010-12-10 | 2015-05-20 | 淮南矿业(集团)有限责任公司 | Uphole sealing method |
| CN102536158A (en) * | 2010-12-10 | 2012-07-04 | 淮南矿业(集团)有限责任公司 | Uphole sealing method |
| CN102606143A (en) * | 2011-01-24 | 2012-07-25 | 河南理工大学 | Downward hole pressure measuring device and process |
| CN102536213A (en) * | 2012-01-12 | 2012-07-04 | 山东科技大学 | Gas seepage range observation method for coal mine |
| CN102536213B (en) * | 2012-01-12 | 2015-09-23 | 山东科技大学 | Gas seepage range observation method for coal mine |
| CN102900429A (en) * | 2012-09-27 | 2013-01-30 | 淮南矿业(集团)有限责任公司 | Device and method for inspecting gas drainage hole tightness |
| CN102889068A (en) * | 2012-11-02 | 2013-01-23 | 淮南矿业(集团)有限责任公司 | Hole sealing device and method |
| CN102943687B (en) * | 2012-12-03 | 2014-08-20 | 中国矿业大学 | Pressure equalizing and hole sealing method for gas extraction drilling |
| CN102943687A (en) * | 2012-12-03 | 2013-02-27 | 中国矿业大学 | Pressure equalizing and hole sealing method for gas extraction drilling |
| CN103075128B (en) * | 2012-12-31 | 2015-07-29 | 中国矿业大学 | A kind of method for sealing of mash gas pumping drilling |
| CN103075128A (en) * | 2012-12-31 | 2013-05-01 | 中国矿业大学 | Method for sealing gas extraction drill holes |
| CN105114030A (en) * | 2015-08-20 | 2015-12-02 | 中国矿业大学 | Gas extraction drilling non-solidification constant-pressure slurry hole sealing method |
| CN105114030B (en) * | 2015-08-20 | 2018-05-08 | 中国矿业大学 | A kind of non-condensable constant pressure slurries method for sealing of mash gas pumping drilling |
| CN106609677A (en) * | 2015-10-22 | 2017-05-03 | 中铁二局集团有限公司 | A gas extraction and discharge construction method |
| CN105422043A (en) * | 2015-12-15 | 2016-03-23 | 中国矿业大学 | Underground coal mine coal seam water injection and hydraulic fracturing drilled hole sealing method |
| CN105971590A (en) * | 2016-06-29 | 2016-09-28 | 陕西陕煤黄陵矿业有限公司 | Pressure measurement and extraction device for surrounding rock gas in mine and operation method |
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| CN106988730A (en) * | 2017-06-01 | 2017-07-28 | 华北科技学院 | Gas parametric measurement probe and its application method in a kind of coal seam |
| CN106988730B (en) * | 2017-06-01 | 2020-08-11 | 华北科技学院 | Coal seam gas parameter measuring probe and using method thereof |
| CN107014554A (en) * | 2017-06-01 | 2017-08-04 | 华北科技学院 | Gas parametric measurement probe in a kind of coal seam |
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| CN107542486B (en) * | 2017-09-30 | 2018-07-03 | 西安科技大学 | Drilling gas extraction laboratory simulation method and sealing material method for testing tightness |
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| 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 |
| CN110080717B (en) * | 2019-06-17 | 2021-05-28 | 中国矿业大学 | Gas pressure measuring method for rapid hole sealing of horizontal drilling |
| CN113090218A (en) * | 2021-05-17 | 2021-07-09 | 重庆工程职业技术学院 | Coal mine permeable hole plugging device and plugging method thereof |
| CN113585353A (en) * | 2021-07-12 | 2021-11-02 | 中陕核工业集团二一八大队有限公司 | Water inrush treatment process for uranium overproof drilling |
| CN114607361A (en) * | 2022-03-24 | 2022-06-10 | 安徽理工大学 | Method for simultaneously measuring gas pressure of close-distance coal seam group |
| CN114607361B (en) * | 2022-03-24 | 2022-11-18 | 安徽理工大学 | Method for simultaneously measuring gas pressure of close-distance coal seam group |
| US11959379B2 (en) | 2022-03-24 | 2024-04-16 | Anhui University of Science and Technology | Method for measuring gas pressure of close-distance seam group simultaneously |
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