CN104790900A - Method for blocking gas extraction boreholes with coal and rock debris as borehole sealing material - Google Patents
Method for blocking gas extraction boreholes with coal and rock debris as borehole sealing material Download PDFInfo
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- CN104790900A CN104790900A CN201510076302.1A CN201510076302A CN104790900A CN 104790900 A CN104790900 A CN 104790900A CN 201510076302 A CN201510076302 A CN 201510076302A CN 104790900 A CN104790900 A CN 104790900A
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- gas pumping
- coal
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- boring
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
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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
Abstract
The invention provides a method for blocking gas extraction boreholes with coal and rock debris as a borehole sealing material. The method includes the steps that 1, the first-stage borehole is drilled in a coal and rock mass on the side of a bed plate tunnel of a coal seam needing gas control, wherein the included angle between the first-stage borehole and the horizontal plane ranges from 5 degree to 80 degrees; 2, a gas extraction tube where a wooden wedge is fixed is installed in the first-stage borehole, and then the section, close to an opening of the first-stage borehole, of the gas extraction tube is blocked through a sealing material; 3, a drill stem and a drill bit of drilling equipment are made to penetrate through the gas extraction tube to drill the second-stage borehole, water is injected to the drill bit through the hollow drill stem in the process of drilling the second-stage borehole, the water which has exchanged heat with the drill bit washes the coal and rock debris generated in drilling of the second-stage borehole downwards along the hole wall, the space between the outer wall of the gas extraction tube and the inner wall of the first-stage borehole is backfilled with the coal and rock debris, the water which is not absorbed by the coal and rock debris passes through the backfilling coal and rock debris and then flows out from the opening end of the first-stage borehole, drilling is stopped after the depth of the second-stage borehole reaches a design depth, and blocking of the gas extraction boreholes is completed after the backfilling coal and rock debris is solidified.
Description
Technical field
The invention belongs to technical field of mine safety, particularly a kind of with the method for coal petrography bits for sealing material shutoff gas pumping hole.
Background technology
Gas is the principal element affecting Safety of Coal Mine Production always, along with the increase of coal mining depth, Gas Disaster can be more and more obvious, and a large amount of superficial part low gaseous mines is changing highly gassy mine into gradually, and a number of gas accident and fatal rate are all the situation risen year by year.Gas is also very serious to the destruction of atmospheric environment, and the damage capability of gas to ozone layer is CO
27 times, its produce greenhouse effect be CO
221 times.Meanwhile, gas is also a kind of clean, efficient and safe novel energy.Gas is effectively administered, not only to safety of coal mines and environmental protection significant, and the situation of energy demand growing tension can also be alleviated.The measure of current gas control is more, and these measures all need in coal seam, to drill through boring and mash gas extraction, and the sealing quality of boring is the key factor affecting gas pumping efficiency, gas extraction concentration and extraction amount.
CN102877882A discloses a kind of method of shutoff gas pumping hole, its step is as follows: on coal body, drill through boring and install gas pumping pipe in boring, cloth matter polyurethane hole sealing bag is set at the two ends of gas pumping pipe, polyurethane foam material has been pre-charged with in hole sealing bag, the pre-buried Grouting Pipe stretched in sealing of hole section space in the hole sealing bag near aperture, sealing of hole material water is modulated into sealing of hole slurry, adopts grouting equipment sealing of hole slurry to be injected the shutoff namely completing gas pumping hole in space, block section by Grouting Pipe.The sulphur aluminium grog of described sealing material by 53 ~ 60wt%, the calcium aluminate powder of 10 ~ 17wt%, after the additional intermixture mixing of the anhydrite of 20 ~ 27wt%, the lime of 5 ~ 12wt% and 5 ~ 9wt%, grinding to granularity is greater than 200 object powder compositions, and additional intermixture is mixed by lithium carbonate, borax, aluminium powder, polyacrylamide, aluminium polychloride, sodium thiosulfate and sodium fluoride.The method has the following disadvantages: the formula of the sealing material that (1) uses is very complicated, and the component in formula is all that sealing of hole scene does not have, must prepare burden in proportion and be transported to scene in advance, dispensing operation is loaded down with trivial details, the expense expended that the price of sealing material itself is cheap, add transport, causes the sealing of hole high cost of the method.(2) grouting equipment is adopted to pump in space, block section by sealing of hole slurry, the amount of pumping into of sealing of hole slurry is difficult to control, and the grouting pressure that different coal petrography physical efficiencys is born is different, the amount of pumping into crosses that I haven't seen you for ages causes sealing of hole incomplete, the amount of pumping into too much can cause block section space pressure too high, cause that the crack of coal and rock is expanded, crack quantity increases, and the crack of coal and rock expansion and be increased in gas control and should avoid as far as possible, these all can cause adverse influence to sealing quality.(3) hole drill through to operate to separate with sealing of hole is carried out, and be unfavorable for the simplification operated, the coal petrography produced when drilling through boring bits and cooling drill bit water go out of use after discharging from boring, cause the waste of resource.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of with the method for coal petrography bits for sealing material shutoff mash gas pumping drilling, to simplify sealing of hole operation, to reduce sealing of hole cost.
Of the present invention with the method for coal petrography bits for sealing material shutoff mash gas pumping drilling, step is as follows:
(1) in the coal and rock needing the end of carrying out gas control coal seam to take out lane, drill through one-level boring, the length of described one-level boring is 8 ~ 12 meters, and one-level boring is 5 ~ 80 degree with the angle of horizontal plane;
(2) canting quoin on gas pumping pipe, be arranged on by the gas pumping pipe securing timber wedge in one-level boring, then with encapsulant, gas pumping pipe is carried out shutoff near portion's section of one-level drilling orifice, shutoff length is 0.5 ~ 2 meter;
(3) drilling rod of rig and drill bit are passed gas pumping pipe, direction along one-level boring drills through secondary boring in coal and rock, to drill through in the process of secondary boring by the drilling rod of hollow to drill bit water filling, consider to be worth doing with the water after drill bit heat exchange sweep away drilling through the coal petrography produced when secondary is holed along hole wall, be backfilled between inwall that the outer wall of gas pumping pipe and one-level hole, part water is absorbed by the coal petrography bits backfilled, unabsorbed water flows out from the orifice end of one-level boring after the coal petrography bits of backfill, the degree of depth that secondary is holed stops boring after reaching projected depth, namely the shutoff in gas pumping hole is completed after the coal petrography bits consolidation backfilled.
In the step (3) of said method, the particle diameter that the rate of penetration controlling to drill through secondary boring makes the coal petrography of generation consider to be worth doing is no more than 10mm, and concrete rate of penetration is determined according to actual geological condition, and rate of penetration is lower, and the coal petrography bits of generation are thinner.
In said method, the design length of secondary boring should ensure secondary boring by gas pumping pipe with wait that the coal seam administering gas is through, and ensure that the backfill length in annular solid space between the inwall that the outer wall of gas pumping pipe and one-level are holed is at least the half of gas pumping length of tube.If the annular space body between gas pumping pipe outer wall and one-level drill hole inner wall has been drilled through the coal petrography backfilled when secondary is holed and has considered to be worth doing and fill up, the coal petrography bits so produced in the continuation drilling process of secondary boring with drill bit heat exchange after flow action under, can hole from drilling rod and secondary and flow out space between gas pumping pipe.
In the step (2) of said method, gas pumping pipe has at least two places be fixed with timber wedge, 2 ~ 3 timber wedges are fixed in everywhere; Preferred version is joint timber wedge being fixed on each gas pumping pipe.
In the step (2) of said method, with encapsulant by portion section shutoff 1 ~ 4 place of gas pumping pipe near one-level drilling orifice.
In the step (2) of said method, described encapsulant is the piece of sack, is fixed on gas pumping pipe by the piece of sack during shutoff with adhesive waterproof tape.
In said method, described one-level boring is the elevation angle with the angle of horizontal plane, and one-level boring is preferably 30 ~ 60 degree with the angle of horizontal plane.
Compared with prior art, the present invention has following beneficial effect:
1, the invention provides the new method of the different shutoff mash gas pumping drilling of a kind of technical conceive, the method makes full use of the water after coal petrography bits and cooling drill bit, the coal petrography bits produced during to hole are as sealing material, and coal petrography is considered to be worth doing and is brought between gas pumping pipe and one-level drill hole wall by the current after drill bit heat exchange, in the backfilling process of coal petrography bits, after coal petrography bits absorb moisture, weight increases, add the induced effect of current, coal petrography bits can form closely knit accumulation horizon, after borehole drilling is got, coal petrography bits can dewater, clayization and consolidation, form firm sealing of hole layer, thus ensure that good sealing effectiveness, further, the method for the invention is gathered materials on the spot, and makes full use of field resources, avoids and prepares sealing material in advance and the operation being transported to sealing of hole scene, have the advantage of the waste simplifying sealing of hole operation, reduction sealing of hole cost and avoid resource concurrently.
2, because sealing of hole and the operation drilling through boring carry out by the method for the invention simultaneously, and boring has certain elevation angle, therefore in the drilling process of secondary boring, coal petrography bits can easily be backfilled between the inwall that the outer wall of gas pumping pipe and one-level hole with current along drill hole wall, without the need to adopting grouting equipment, also without the need to preparing sealing of hole slurry, not only effectively simplify the plugging operations in existing gas pumping hole, and saved the expense of grouting equipment, be conducive to the reduction of sealing of hole cost.
3, the size of the coal petrography bits that the method for the invention produces when drilling through secondary boring is less, under flow action, coal petrography bits be easy to enter also pile up wherein between inwall that the outer wall of gas pumping pipe and one-level hole closely knit, after water is saturated in coal petrography bits, excessive water flows out from the orifice end of one-level boring through the coal petrography bits of backfill under gravity, because current go out through the coal petrography bits laminar flow piled up in natural situation, additionally need not apply pressure, avoiding problems between gas pumping pipe and one-level drill hole wall causes coal and rock to occur the phenomenon that crack is expanded and increased because pressure is excessive.
4, the method for the invention simple to operate, with low cost and sealing of hole is effective, has great practical value, easily applies in engineering practice.
Accompanying drawing explanation
Fig. 1 is the schematic diagram adopting the method for the invention shutoff mash gas pumping drilling;
In figure, 1-coal and rock, lane is taken out at 2-end, and 3-one-level is holed, and 4-secondary is holed, 5-gas pumping pipe, 6-joint coupling, 7-timber wedge, 8-encapsulant, and 9-coal petrography is considered to be worth doing, the angle of α-one-level boring and horizontal plane.
Detailed description of the invention
Be described further with the method for coal petrography bits for sealing material shutoff mash gas pumping drilling of the present invention below in conjunction with drawings and Examples.
Embodiment 1
In the present embodiment, Fig. 1 is shown in by the schematic diagram of shutoff mash gas pumping drilling, the total length of mash gas pumping drilling is 38m, wherein, the length of one-level boring 3 is 12m, one-level boring is 60 ° with angle (elevation angle) α of horizontal plane, aperture is about 120mm, and the length of secondary boring 4 is 26m, diameter is about 75mm.
(1) according to actual requirement of engineering, determine to need to carry out gas control coal seam, install auger in the Di Chou lane, coal seam in this coal seam, adopting diameter to be the drill bit of 113mm and diameter is the drilling rod of 50mm, and the coal and rock 1 that lane 2 is taken out at the end drills through one-level boring 3.
(2) be 85mm by three external diameters, internal diameter is that 75mm gas pumping pipe 5 links together with joint coupling 6 and bonding agent, after connecting, its total length is 13.5m, at first joint fixation with steel wire two timber wedge 7 with second gas pumping pipe, two timber wedges are along the radial distribution of gas pumping pipe, similarly, in the joint of second and the 3rd gas pumping pipe with fixation with steel wire two timber wedges, timber wedge plays the effect be fixed on by gas pumping pipe in one-level boring 3.The gas pumping pipe securing timber wedge is pushed to gradually in one-level boring 3, in propelling movement process, at distance gas pumping tube end (one end near one-level drilling orifice) 3.5m and 1.5m place, with piece of sack parcel gas pumping Guan Houyong adhesive waterproof tape, the piece of sack is fastened respectively, the shutoff length of the everywhere piece of sack is 0.5m, when gas pumping pipe is pushed to one-level foot of hole, the block section at distance gas pumping tube end 1.5m place is just in time positioned at the aperture place of one-level boring 3.
(3) this step adopts diameter to be the drill bit of 65mm, external diameter is the hollow drill pipe of 50mm, described drilling rod and drill bit are passed gas pumping pipe 5, open rig in coal and rock, drill through secondary boring 4 along the direction that one-level is holed, control drills through the rate of penetration of secondary boring coal and rock to be drilled to the coal petrography bits that particle diameter is no more than 10mm, to drill through in the process of secondary boring by the drilling rod of hollow to drill bit water filling, consider to be worth doing with the water after drill bit heat exchange sweep away drilling through the coal petrography produced when secondary is holed along hole wall, be backfilled to the outer wall of gas pumping pipe 5 and one-level hole 3 inwall between, part water is absorbed by the coal petrography bits backfilled, unabsorbed water flows out from the orifice end of one-level boring after the coal petrography bits of backfill, secondary drilling depth stops boring when reaching 26m, take out drill bit and drilling rod, coal petrography bits progressively gather, dehydration, clayization and consolidation, after 3 days, the coal petrography of backfill considers complete consolidation to be worth doing, namely the shutoff in gas pumping hole is completed.
Embodiment 2
In the present embodiment, the total length of mash gas pumping drilling is 35m, wherein, the length of one-level boring 3 is 8m, one-level boring is 30 ° with angle (elevation angle) α of horizontal plane, aperture is about 120mm, and the length of secondary boring 4 is 27m, diameter is about 75mm.
(1) according to actual requirement of engineering, determine to need to carry out gas control coal seam, install auger in the Di Chou lane, coal seam in this coal seam, adopting diameter to be the drill bit of 113mm and diameter is the drilling rod of 50mm, and the coal and rock 1 that lane 2 is taken out at the end drills through one-level boring 3.
(2) be 85mm by three external diameters, internal diameter is that 75mm gas pumping pipe 5 links together with joint coupling 6 and bonding agent, after connecting, its total length is 9m, at first joint fixation with steel wire three timber wedge 7 with second gas pumping pipe, three timber wedges are evenly distributed on the joint of gas pumping pipe, similarly, in the joint of second and the 3rd gas pumping pipe with fixation with steel wire three timber wedges, timber wedge plays the effect be fixed on by gas pumping pipe in one-level boring 3.The gas pumping pipe securing timber wedge is pushed to gradually in one-level boring 3, in propelling movement process, at distance gas pumping tube end (one end near one-level drilling orifice) 1m place, with piece of sack parcel gas pumping Guan Houyong adhesive waterproof tape, the piece of sack is fastened, the shutoff length of the piece of sack is 2m, when gas pumping pipe is pushed to one-level foot of hole, the block section at distance gas pumping tube end 1m place is just in time positioned at the aperture place of one-level boring 3.
(3) this step adopts diameter to be the drill bit of 65mm, external diameter is the hollow drill pipe of 50mm, described drilling rod and drill bit are passed gas pumping pipe 5, open rig in coal and rock, drill through secondary boring 4 along the direction that one-level is holed, control drills through the rate of penetration of secondary boring coal and rock to be drilled to the coal petrography bits that particle diameter is no more than 10mm, to drill through in the process of secondary boring by the drilling rod of hollow to drill bit water filling, consider to be worth doing with the water after drill bit heat exchange sweep away drilling through the coal petrography produced when secondary is holed along hole wall, be backfilled to the outer wall of gas pumping pipe 5 and one-level hole 3 inwall between, part water is absorbed by the coal petrography bits backfilled, unabsorbed water flows out from the orifice end of one-level boring after the coal petrography bits of backfill, secondary drilling depth stops boring when reaching 27m, take out drill bit and drilling rod, coal petrography bits progressively gather, dehydration, clayization and consolidation, after 3 days, the coal petrography of backfill considers complete consolidation to be worth doing, namely the shutoff in gas pumping hole is completed.
Embodiment 3
In the present embodiment, the total length of mash gas pumping drilling is 36m, wherein, the length of one-level boring 3 is 11m, one-level boring is 80 ° with angle (elevation angle) α of horizontal plane, aperture is about 120mm, and the length of secondary boring 4 is 25m, diameter is about 75mm.
(1) according to actual requirement of engineering, determine to need to carry out gas control coal seam, install auger in the Di Chou lane, coal seam in this coal seam, adopting diameter to be the drill bit of 113mm and diameter is the drilling rod of 50mm, and the coal and rock 1 that lane 2 is taken out at the end drills through one-level boring 3.
(2) be 85mm by three external diameters, internal diameter is that 75mm gas pumping pipe 5 links together with joint coupling 6 and bonding agent, after connecting, its total length is 12m, at first joint fixation with steel wire two timber wedge 7 with second gas pumping pipe, two timber wedges are along the radial distribution of gas pumping pipe, similarly, in the joint of second and the 3rd gas pumping pipe with fixation with steel wire two timber wedges, timber wedge plays the effect be fixed on by gas pumping pipe in one-level boring 3.The gas pumping pipe securing timber wedge is pushed to gradually in one-level boring 3, in propelling movement process, at distance gas pumping tube end (one end near one-level drilling orifice) 4m, 3m, 2m and 1m place, with piece of sack parcel gas pumping Guan Houyong adhesive waterproof tape, the piece of sack is fastened respectively, the shutoff length of the everywhere piece of sack is 0.5m, when gas pumping pipe is pushed to one-level foot of hole, the block section at distance gas pumping tube end 1m place is just in time positioned at the aperture place of one-level boring 3.
(3) this step adopts diameter to be the drill bit of 65mm, external diameter is the hollow drill pipe of 50mm, described drilling rod and drill bit are passed gas pumping pipe 5, open rig in coal and rock, drill through secondary boring 4 along the direction that one-level is holed, control drills through the rate of penetration of secondary boring coal and rock to be drilled to the coal petrography bits that particle diameter is no more than 10mm, to drill through in the process of secondary boring by the drilling rod of hollow to drill bit water filling, consider to be worth doing with the water after drill bit heat exchange sweep away drilling through the coal petrography produced when secondary is holed along hole wall, be backfilled to the outer wall of gas pumping pipe 5 and one-level hole 3 inwall between, part water is absorbed by the coal petrography bits backfilled, unabsorbed water flows out from the orifice end of one-level boring after the coal petrography bits of backfill, secondary drilling depth stops boring when reaching 25m, take out drill bit and drilling rod, coal petrography bits progressively gather, dehydration, clayization and consolidation, after 3 days, the coal petrography of backfill considers complete consolidation to be worth doing, namely the shutoff in gas pumping hole is completed.
Embodiment 4
In the present embodiment, the total length of mash gas pumping drilling is 33m, wherein, the length of one-level boring 3 is 11m, one-level boring is 5 ° with angle (elevation angle) α of horizontal plane, aperture is about 120mm, and the length of secondary boring 4 is 22m, diameter is about 75mm.
(1) according to actual requirement of engineering, determine to need to carry out gas control coal seam, install auger in the Di Chou lane, coal seam in this coal seam, adopting diameter to be the drill bit of 113mm and diameter is the drilling rod of 50mm, and the coal and rock 1 that lane 2 is taken out at the end drills through one-level boring 3.
(2) be 85mm by three external diameters, internal diameter is that 75mm gas pumping pipe 5 links together with joint coupling 6 and bonding agent, after connecting, its total length is 12m, at first joint fixation with steel wire two timber wedge 7 with second gas pumping pipe, two timber wedges are along the radial distribution of gas pumping pipe, similarly, in the joint of second and the 3rd gas pumping pipe with fixation with steel wire two timber wedges, timber wedge plays the effect be fixed on by gas pumping pipe in one-level boring 3.The gas pumping pipe securing timber wedge is pushed to gradually in one-level boring 3, in propelling movement process, at distance gas pumping tube end (one end near one-level drilling orifice) 1m place, with piece of sack parcel gas pumping Guan Houyong adhesive waterproof tape, the piece of sack is fastened, piece of sack shutoff length is 1.5m, when gas pumping pipe is pushed to one-level foot of hole, the block section at distance gas pumping tube end 1m place is just in time positioned at the aperture place of one-level boring 3.
(3) this step adopts diameter to be the drill bit of 65mm, external diameter is the hollow drill pipe of 50mm, described drilling rod and drill bit are passed gas pumping pipe 5, open rig in coal and rock, drill through secondary boring 4 along the direction that one-level is holed, control drills through the rate of penetration of secondary boring coal and rock to be drilled to the coal petrography bits that particle diameter is no more than 10mm, to drill through in the process of secondary boring by the drilling rod of hollow to drill bit water filling, consider to be worth doing with the water after drill bit heat exchange sweep away drilling through the coal petrography produced when secondary is holed along hole wall, be backfilled to the outer wall of gas pumping pipe 5 and one-level hole 3 inwall between, part water is absorbed by the coal petrography bits backfilled, unabsorbed water flows out from the orifice end of one-level boring after the coal petrography bits of backfill, secondary drilling depth stops boring when reaching 22m, take out drill bit and drilling rod, coal petrography bits progressively gather, dehydration, clayization and consolidation, after 3 days, the coal petrography of backfill considers complete consolidation to be worth doing, namely the shutoff in gas pumping hole is completed.
Claims (10)
1., with the method for coal petrography bits for sealing material shutoff mash gas pumping drilling, it is characterized in that step is as follows:
(1) in the coal and rock (1) needing the end of carrying out gas control coal seam to take out lane (2), one-level boring (3) is drilled through, the length of described one-level boring is 8 ~ 12 meters, and one-level boring is 5 ~ 80 degree with the angle (α) of horizontal plane;
(2) at the upper canting quoin (7) of gas pumping pipe (5), the gas pumping pipe securing timber wedge is arranged in one-level boring (3), then use encapsulant (8) that gas pumping pipe is carried out shutoff near portion's section of one-level drilling orifice, shutoff length is 0.5 ~ 2 meter;
(3) drilling rod of rig and drill bit are passed gas pumping pipe (5), direction along one-level boring drills through secondary boring (4) in coal and rock (1), to drill through in the process of secondary boring by the drilling rod of hollow to drill bit water filling, consider (9) with the water after drill bit heat exchange to be worth doing sweep away drilling through the coal petrography produced when secondary is holed along hole wall, be backfilled between inwall that the outer wall of gas pumping pipe and one-level hole, part water is absorbed by the coal petrography bits backfilled, unabsorbed water flows out from the orifice end of one-level boring after the coal petrography bits of backfill, the degree of depth of secondary boring (4) reaches after projected depth and stops boring, namely the shutoff in gas pumping hole is completed after the coal petrography bits consolidation backfilled.
2., according to claim 1 with the method for coal petrography bits for sealing material shutoff mash gas pumping drilling, it is characterized in that the particle diameter that the rate of penetration controlling in step (3) to drill through secondary boring makes the coal petrography of generation consider to be worth doing is no more than 10mm.
3. according to claim 1 or 2 with the method for coal petrography bits for sealing material shutoff mash gas pumping drilling, it is characterized in that design length that secondary is holed should ensure secondary boring by gas pumping pipe with wait that the coal seam administering gas is through, and ensure that the backfill length in annular solid space between the inwall that the outer wall of gas pumping pipe and one-level are holed is at least the half of gas pumping length of tube.
4. according to claim 1 or 2 with the method for coal petrography bits for sealing material shutoff mash gas pumping drilling, it is characterized in that, in step (2), gas pumping pipe having at least two places be fixed with timber wedge, 2 ~ 3 timber wedges are fixed in everywhere.
5., according to claim 3 with the method for coal petrography bits for sealing material shutoff mash gas pumping drilling, it is characterized in that, in step (2), gas pumping pipe having at least two places be fixed with timber wedge, 2 ~ 3 timber wedges are fixed in everywhere.
6. according to claim 1 or 2 with the method for coal petrography bits for sealing material shutoff mash gas pumping drilling, it is characterized in that in step (2), with encapsulant by portion section shutoff 1 ~ 4 place of gas pumping pipe near one-level drilling orifice.
7. according to claim 1 or 2 with the method for coal petrography bits for sealing material shutoff mash gas pumping drilling, it is characterized in that described encapsulant is the piece of sack, with adhesive waterproof tape, the piece of sack be fixed on gas pumping pipe during shutoff.
8. according to claim 3 with the method for coal petrography bits for sealing material shutoff mash gas pumping drilling, it is characterized in that described encapsulant is the piece of sack, with adhesive waterproof tape, the piece of sack is fixed on gas pumping pipe during shutoff.
9. according to claim 4 with the method for coal petrography bits for sealing material shutoff mash gas pumping drilling, it is characterized in that described encapsulant is the piece of sack, with adhesive waterproof tape, the piece of sack is fixed on gas pumping pipe during shutoff.
10. according to claim 6 with the method for coal petrography bits for sealing material shutoff mash gas pumping drilling, it is characterized in that described encapsulant is the piece of sack, with adhesive waterproof tape, the piece of sack is fixed on gas pumping pipe during shutoff.
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| CN201510076302.1A CN104790900A (en) | 2015-02-12 | 2015-02-12 | Method for blocking gas extraction boreholes with coal and rock debris as borehole sealing material |
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| CN201510076302.1A CN104790900A (en) | 2015-02-12 | 2015-02-12 | Method for blocking gas extraction boreholes with coal and rock debris as borehole sealing material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105735935A (en) * | 2016-03-07 | 2016-07-06 | 平顶山市安泰华矿用安全设备制造有限公司 | Gas drainage borehole sealing process |
| CN109113786A (en) * | 2018-10-12 | 2019-01-01 | 安徽理工大学 | Drilling rod formula gas drainage device can be exited |
| CN110374497A (en) * | 2019-08-29 | 2019-10-25 | 田振林 | A kind of drilling equipment and its boring method in fire damp hole |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251029A (en) * | 2008-04-10 | 2008-08-27 | 中国矿业大学 | Secondary hole sealing device for firedamp taking-out discharging drilling |
| US20090095484A1 (en) * | 2007-10-12 | 2009-04-16 | Baker Hughes Incorporated | In-Flow Control Device Utilizing A Water Sensitive Media |
| CN201705387U (en) * | 2010-06-14 | 2011-01-12 | 阳泉煤业（集团）有限责任公司 | Hole drilling and sealing device for coal seam gas extraction |
| CN103266913A (en) * | 2013-05-13 | 2013-08-28 | 西南石油大学 | Gas extraction method |
| CN103775120A (en) * | 2014-01-20 | 2014-05-07 | 中国矿业大学 | Method for realizing drilling and hole sealing based on drill cuttings during uplink gas extraction |
| CN203702070U (en) * | 2013-12-30 | 2014-07-09 | 平顶山天安煤业股份有限公司 | Coal mine low pumping lane borehole slag-returning sealing apparatus |
-
2015
- 2015-02-12 CN CN201510076302.1A patent/CN104790900A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090095484A1 (en) * | 2007-10-12 | 2009-04-16 | Baker Hughes Incorporated | In-Flow Control Device Utilizing A Water Sensitive Media |
| CN101251029A (en) * | 2008-04-10 | 2008-08-27 | 中国矿业大学 | Secondary hole sealing device for firedamp taking-out discharging drilling |
| CN201705387U (en) * | 2010-06-14 | 2011-01-12 | 阳泉煤业（集团）有限责任公司 | Hole drilling and sealing device for coal seam gas extraction |
| CN103266913A (en) * | 2013-05-13 | 2013-08-28 | 西南石油大学 | Gas extraction method |
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| CN105735935A (en) * | 2016-03-07 | 2016-07-06 | 平顶山市安泰华矿用安全设备制造有限公司 | Gas drainage borehole sealing process |
| CN105735935B (en) * | 2016-03-07 | 2018-06-22 | 平顶山市安泰华矿用安全设备制造有限公司 | A kind of firedamp taking-out discharging drilling hole-sealing technology |
| CN109113786A (en) * | 2018-10-12 | 2019-01-01 | 安徽理工大学 | Drilling rod formula gas drainage device can be exited |
| CN110374497A (en) * | 2019-08-29 | 2019-10-25 | 田振林 | A kind of drilling equipment and its boring method in fire damp hole |
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Application publication date: 20150722 |