CN103452525B - Gas takes out fixed stopper and using method thereof - Google Patents
Gas takes out fixed stopper and using method thereof Download PDFInfo
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- CN103452525B CN103452525B CN201310402234.4A CN201310402234A CN103452525B CN 103452525 B CN103452525 B CN 103452525B CN 201310402234 A CN201310402234 A CN 201310402234A CN 103452525 B CN103452525 B CN 103452525B
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Abstract
The open a kind of gas of the present invention takes out fixed stopper and using method thereof, three Guan Congsan, hole pouches pass, recyclable Grouting Pipe passes through drainage system and the slip casting channel connection of three hole pipes, gas leakage is disposed pipe and is disposed channel connection by the gas leakage of drainage system and three hole pipes, the injected hole of drainage system is coaxial with the slip casting of three hole pipes connection aperture by slip casting aperture, it is coaxial that the disposal hole that leaks gas of drainage system connects aperture by gas leakage disposal aperture and the gas leakage of three hole pipes disposal, on slip casting passage in being positioned at three pouches, check valve is set, pressure check valve is installed on the slip casting passage between No. two pouches and No. three pouches.The present invention is capable of, to sealing of hole section boring more effective slip casting closure, more effectively avoiding the generation in sealing of hole section boring rib crack around, and minimum coalmass crevasse being also filled with by the present invention so that plugging effect reaches optimal.
Description
Technical field
The present invention relates to a kind of gas and take out fixed stopper and using method thereof, particularly suitable underground coal mine
The hole sealing device of the permanent sealing of hole of this coal bed drilling.
Background technology
China's coal-mine underground gas extraction method for providing is a lot, is the most all to carry out one section of sealing pores at a certain distance from boring.Coal mine gas extraction borehole sealing of hole is divided into permanent sealing of hole and provisional sealing of hole.At present, known permanent sealing of hole is using polyurathamc, foam cement and other expanded material as sealing material.The provisional sealing of hole of gas pumping uses machinery hole sealing device sealing of hole.The applicant's invention " bag type paste injection hole sealing mode and method for sealing thereof " (ZL200710054384.5) and " shunting-type grouting plugging device for gas extraction center and method for sealing " (ZL201110120920.3) achieves good sealing of hole effect, and extraction gas density is obtained for significantly to be mentioned.But being as the passage of extraction time, the concentration of coal mine gas drainage engenders decay.Owing in the release of coal body Elastic latent energy and coal seam, gas pressure reduces, gas bearing capacity declines so that coal seam occurs that displacement and deformation, boring are around gradually grown, expanded in space, starting effect good bag type paste method for sealing cannot make rib drilling and sealing tight, has gas leak phenomenon to produce." bag type paste injection hole sealing mode and method for sealing thereof " (ZL200710054384.5) and " shunting-type grouting plugging device for gas extraction center and method for sealing " (ZL201110120920.3) of the applicant's invention at present is unable to reach preferable sealing of hole effect.Additionally, due to each colliery ature of coal etc. have bigger difference, the phenomenons such as collapse hole often occur, causes the stopper being relatively large in diameter to insert in coal bed drilling smoothly.Exert a certain influence to sealing of hole.Disposing additionally, above-mentioned stopper cannot be carried out later stage gas leakage, and processing is more complicated, cost is costly.
Summary of the invention
Shortcoming for prior art, it is an object of the invention to provide a kind of to the boring early stage enforcement more effective slip casting closure of sealing of hole section, later stage can carry out gas leakage and dispose, and preferably prevents sealing of hole section boring gas leakage crack from producing and the gas of development takes out fixed stopper and using method thereof.
The present invention solves that technical scheme that above-mentioned technical problem used is as described below:
nullIntegrated apparatus is disposed in a kind of three hole pipe injection hole sealings and gas leakage，Including a pouch、No. two pouches and No. three pouches，Three hole pipes pass from described three pouches，Described three hole pipes include an extraction passage，Passage is disposed in one slip casting passage and a gas leakage，Slip casting passage arranges slip casting connection aperture，Dispose in gas leakage and gas leakage disposal connection aperture is set on passage，In one end of three hole pipes, drainage system is set，Recyclable Grouting Pipe passes through drainage system and the slip casting channel connection of three hole pipes，Gas leakage is disposed pipe and is disposed channel connection by the gas leakage of drainage system and three hole pipes，Drainage system includes that hole is disposed in injected hole and gas leakage，The injected hole of described drainage system is connected by the slip casting connection aperture of slip casting aperture and three hole pipes，The disposal hole that leaks gas of described drainage system connects aperture by the gas leakage disposal of gas leakage disposal aperture and three hole pipes and connects，Check valve is installed on the slip casting passage in being positioned at three pouches，Pressure check valve is installed on the slip casting passage between No. two pouches and No. three pouches.
Further, two shear pinhole are set at the injected hole of drainage system, fix casting head by the shear pin in shear pinhole.
Further, casting head is inserted in one end of described drainage system and pipe is disposed in gas leakage, and the injected hole of the other end and gas leakage are disposed hole tubule plug and sealed.
Further, the gas leakage between a pouch and No. two pouches is disposed and is arranged gas leakage disposal boring on passage.
Further, the slip casting passage two ends of described three hole pipes and gas leakage dispose passage two ends respectively with leak stopping cement or three hole pipe close closure.
Further, the connection foremost of three hole pipes has screen cloth pipe, the least significant end of three hole pipes to be connected with common drainage tube.
Further, the two ends of each pouch are pressed on three hole pipes by metal pressure ring.
Further, gas leakage is disposed the length of pipe and be disclosure satisfy that when stopper is inserted into hole sealing depth, extends to hole month.
A kind of gas takes out the using method of fixed stopper, comprises the following steps: at the connection antipriming pipe foremost of gas pumping fixed stopper drainage tube.
(S1) casting head being connected with recyclable Grouting Pipe is inserted in the inlet well of drainage system, shear pin is inserted in shear pinhole and fixes casting head；
(S2) pipe spreading is disposed in gas leakage so that when stopper is inserted into hole sealing depth, gas leakage disposes pipe tensible to hole month position；
(S3) fixed for gas pumping stopper is disposed pipe together with recyclable Grouting Pipe and gas leakage and insert the suitable hole sealing depth of coal bed drilling, during insertion three hole pipe ends of stopper are docked with common drainage tube, make drainage tube tensible to hole month；
(S4) gas leakage disposal pipe is fixed on hole month position；
(S5) by fixed for gas pumping stopper toward during boring is inserted, prepare sealing of hole serosity, and check grouting pump and grouting pump upward pressure table；
(S6) other end of recyclable Grouting Pipe is connected with grouting pump, the pulp-inlet pipe of grouting pump is inserted in sealing of hole serosity, injection hole sealing can be started；
(S7) serosity flows through: grouting pump recyclable Grouting Pipe number pouch of casting head drainage system slip casting passage No. three pouches of No. two pouches, after three pouches all enter serosity, slip casing by pressure raises, when reaching predetermined grouting pressure, pressure check valve between No. two pouches and No. three pouches is opened, serosity enters in the coal bed drilling between No. two pouches and No. three pouches, and pressure raises again, stops slip casting when pressure reaches predetermined pressure；
(S8) firmly pulling out recyclable Grouting Pipe, shear pin is cut off by casting head, reclaims casting head and recyclable Grouting Pipe, and slip casting completes；
(S9) later stage gas density carries out gas leakage disposal when reducing, pass through high pressure equipment, ultra-fine gas leakage being disposed material and is pressed into the position between a pouch and No. two pouches by gas leakage disposal pipe, super-fine material gradually penetrates in cracks in coal seam, the crack in closure sealing of hole section coal seam.
Beneficial effects of the present invention is as follows: the present invention is capable of sealing of hole section boring more effective slip casting closure, more effectively avoid generation and the development in sealing of hole section boring rib crack around, and minimum coalmass crevasse also can be filled with by the present invention so that plugging effect reaches optimal.The method for blocking of the present invention makes the boring of sealing of hole section around produce the region of high stress, and the gas leakage in later stage is disposed and ultrafine dust material is pressed into rib crack, greatly reduces the breathability of boring surrounding medium, it is achieved that the boring of sealing of hole section is effectively blocked purpose.Gas of the present invention takes out the structural material of fixed stopper and slip casting plugging material intensity does not the most affect coal-winning machine coal cutting, and will not produce spark during coal cutting, it is possible to efficient, safe exploitation.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that gas of the present invention takes out fixed stopper；
Fig. 2 is the left view that gas of the present invention takes out fixed stopper；
Fig. 3 is the B-B profile of Fig. 2；
Fig. 4 is the C-C profile of Fig. 2；
Fig. 5 is the D-D profile in Fig. 1；
Fig. 6 is casting head schematic diagram.
Detailed description of the invention
It is next with specific embodiment below in conjunction with the accompanying drawings that present invention is described.
The invention discloses a kind of gas and take out fixed stopper, as Figure 1-5, dispose pipe 8, rubber sleave 3, shear pin 9 including 1, pouch of three hole pipes, 11, No. three pouches 12 of 10, No. two pouches, aluminium foil 13, recyclable Grouting Pipe 6, gas leakage.
Fig. 1 is that gas of the present invention takes out fixed stopper schematic diagram, and wherein, 1 is three hole pipes, 2 is drainage system, and 3 is rubber sleave, and 4 is metal pressure ring, 7 is tubule plug, and 8 dispose pipe for gas leakage, and 9 is shear pin, 10 is a pouch, and 11 is No. two pouches, and 12 is No. three pouches, 15 dispose passage for gas leakage, 17 dispose outlet for gas leakage, and 20 dispose connection aperture for gas leakage, and 21 is three hole pipe closes.
Fig. 2 is the left view that gas of the present invention takes out fixed stopper.
Fig. 3 is the B-B profile of Fig. 2, and wherein, 1 is three hole pipes, 3 is rubber sleave, and 4 is metal pressure ring, and 5 is casting head, 6 is recyclable Grouting Pipe, and 7 is tubule plug, and 9 is shear pin, 10 is a pouch, and 11 is No. two pouches, and 12 is No. three pouches, 13 is aluminium foil, 14 is slip casting passage, and 19 connect aperture for slip casting, and 21 is three hole pipe closes.
Fig. 4 is the C-C profile of Fig. 2, and wherein, 1 is three hole pipes, 2 is drainage system, and 3 is rubber sleave, and 4 is metal pressure ring, 7 is tubule plug, and 8 dispose pipe for gas leakage, and 9 is shear pin, 10 is a pouch, and 11 is No. two pouches, and 12 is No. three pouches, 15 dispose passage for gas leakage, 17 dispose outlet for gas leakage, and 20 dispose connection aperture for gas leakage, and 21 is three hole pipe closes.
Fig. 5 is the D-D profile in Fig. 1, and wherein, 1 is three hole pipes, and 2 is drainage system, and 5 is casting head, and 8 dispose pipe for gas leakage, and 9 is shear pin, and 14 is slip casting passage, and 15 dispose passage for gas leakage, and 16 for taking out passage, and 18 is shear pinhole.
Fig. 6 is casting head 5 schematic diagram.
Specifically, a kind of gas takes out fixed stopper, and including 10, No. two pouches 11 of a pouch and No. three pouches 12, the two ends of each pouch are pressed on three hole pipes 1 by metal pressure ring 4.Three hole pipes 1 pass from described three pouches, described three hole pipes 1 include an extraction passage 16, passage 15 is disposed in one slip casting passage 14 and a gas leakage, slip casting passage 14 arranges slip casting connection aperture 19, dispose in gas leakage and gas leakage disposal connection aperture 20 is set on passage 15, in one end of three hole pipes, drainage system 2 is set, recyclable Grouting Pipe 6 is connected with the slip casting passage 14 of three hole pipes by drainage system 2, gas leakage is disposed pipe 8 and is connected with the gas leakage disposal passage 15 of three hole pipes by drainage system 2, two shear pinhole 18 are set at the injected hole of drainage system 2, casting head 5 is fixed by the shear pin 9 in shear pinhole.
Drainage system 2 includes that hole is disposed in injected hole and gas leakage, the injected hole of drainage system 2 is provided with slip casting aperture, gas leakage is disposed and is arranged gas leakage disposal aperture in hole, the injected hole of described drainage system 2 connects aperture 19 by the slip casting of slip casting aperture and three hole pipes 1 and connects, and the disposal hole that leaks gas of described drainage system 2 connects aperture 20 by the gas leakage disposal of gas leakage disposal aperture and three hole pipes 1 and connects.Some slurry outlets are set on the slip casting passage 14 in being positioned at three pouches, and on slurry outlet, are set with rubber sleave 3, form check valve；Slurry outlet between No. two pouches 11 and No. three pouches 12 installs aluminium foil 13, and outside aluminium foil 13, rubber sleave 3 on set, forms pressure check valve.Casting head 5 is inserted in one end of described drainage system 2 and pipe 8 is disposed in gas leakage, and recyclable Grouting Pipe 6 is connected with casting head 5, and the injected hole of the other end and gas leakage are disposed hole tubule plug 7 and sealed.
Slip casting passage 14 two ends of described three hole pipes and gas leakage dispose passage 15 two ends respectively with leak stopping cement or three hole pipe close closure.The connection foremost of three hole pipes 1 has screen cloth pipe, the least significant end of three hole pipes 1 to be connected with common drainage tube.
As it is shown in figure 1, three hole pipes 1 pass from three pouches, the two ends of each pouch are pressed on three hole pipes 1 by metal pressure ring 4.Gas leakage between a pouch and No. two pouches is disposed and is arranged gas leakage disposal boring on passage, in order to later stage gas leakage is disposed material and entered a position middle with No. two pouches from this hole.Leaving relatively long distance between No. two pouches 11 and No. three pouches 12, this segment distance is sealing of hole serosity to be injected after three pouch slip castings complete.As it is shown on figure 3, slip casting passage 14 position in each pouch is drilled with slurry outlet, at slurry outlet, put rubber sleave 3, play the effect of check valve, respectively toward slip casting in three pouches；Being provided with aluminium foil 13 at slurry outlet between No. two and No. three pouches, outside aluminium foil 13, rubber sleave 3 on set, makes pressure check valve.The material that the serosity of recyclable Grouting Pipe 6 and later stage gas leakage are disposed respectively through the slip casting passage 14 of three hole pipes 1 and leaks gas disposal passage 15(as shown in Figure 4 through drainage system 2) complete sealing of hole and gas leakage.
Gas leakage is disposed pipe 8 and is fixed on the gas leakage of drainage system 2 and disposes in boring, and gas leakage is disposed after terminating that pipe is fixing is reserved in sealing of hole hole month by sealing of hole, treats that the later stage carries out gas leakage disposal.
As shown in Figure 5, it is all to dispose passage 15 through drainage system 2 connect with slip casting passage 14 and the gas leakage of three hole pipes 1 that pipe 8 is disposed in casting head 5 and gas leakage, the contact surface of drainage system 2 and three hole pipes 1 has two apertures (i.e. slip casting aperture disposes aperture with gas leakage), in injected hole, by slip casting aperture with gas leakage dispose aperture connect with the slip casting of three hole pipes respectively aperture and gas leakage dispose connection aperture coaxial, and with injected hole and leak gas disposal hole vertical.The slip casting aperture of drainage system 2 is opened in injected hole with gas leakage disposal aperture and disposes hole correspondence position with gas leakage, the slip casting connection aperture 19 of three hole pipes 1, gas leakage is disposed connection aperture 20 and is opened in slip casting passage 14 respectively, passage 15 correspondence position is disposed in gas leakage, recyclable Grouting Pipe 6 is connected with casting head 5, casting head 5 inserts the injected hole on drainage system 2, gas leakage is disposed pipe 8 and is connected with the gas leakage disposal hole on drainage system 2, when drainage system 2 is arranged on three hole pipes 1, slip casting aperture in the injected hole of drainage system 2 connects aperture 19 with slip casting, the gas leakage disposal aperture that gas leakage is disposed in hole can be corresponding coaxial with gas leakage disposal connection aperture 20.The slip casting passage of three hole pipes 1 and gas leakage dispose passage two ends respectively with leak stopping cement or stopper closure, so as not to slip casting and gas leakage dispose during spillage and material.Gas leakage is disposed the length of pipe 8 and be disclosure satisfy that when stopper is inserted into hole sealing depth, extends to hole month.
As shown in Figure 5, recyclable Grouting Pipe 8 is connected with casting head 5, the drill hole of drainage system 2 correspondence inserting casting head 5 has two shear pinhole 18, slip casting pulls at recyclable Grouting Pipe 8 after completing, shear pin 9 is cut off under the effect of shearing force, and recyclable Grouting Pipe 8 and casting head 5 can extract recovery.
The connection foremost of three hole pipes 1 has screen cloth pipe, filtration cinder not to enter extraction passage and result in blockage, and the least significant end of three hole pipes 1 is connected with common drainage tube.The injected hole of drainage system 2 end and gas leakage disposal hole need to block upper (as shown in Figure 3) with pore plug 7 so that injecting paste material and gas leakage disposal material can enter slip casting passage 14 smoothly and dispose passage 15 with gas leakage.
In one embodiment, gas is taken out fixed stopper and is included that pipe 8 disposed by three hole pipes 1,2, pouch of drainage system, 11, No. three pouches 12 of 10, No. two pouches, aluminium foil 13, recyclable Grouting Pipe 6, gas leakage, rubber sleave 3, casting head 5, metal pressure ring 4 form.A number pouch 11, No. three pouch 12 structures of 10, No. two pouches all as, be all made up of outer cloth set.Three hole pipes 1 are through three pouches, and the two ends of each pouch use 4 pouch two ends of metal pressure ring to be pressed on three hole pipes 1, and can guarantee that to have serosity to ooze out from gap.Drainage system 2 is fixed on the end of three hole pipes 1.Recyclable Grouting Pipe 6 is connected with casting head 5.Relatively short distance is left between a number pouch 10 and No. two pouches 11.Reserve longer distance between No. two pouches 11 and No. three pouches 12, pressure check valve is installed in the middle of this segment distance.Slip casting passage 14 position of three hole pipes 1 in three pouches all has slurry outlet, and is set with rubber sleave 3, makes check valve.Drainage system 2 is fixed on three hole pipes 1, ensure during installation that the gas leakage disposal aperture that the slip casting aperture in the injected hole on drainage system 2 is disposed in hole with gas leakage connects aperture 19 respectively with the slip casting of three hole pipes 1, connection aperture 20 is disposed in gas leakage coaxial, so that it is respectively communicated with slip casting passage 14, gas leakage disposal passage 15.The slip casting passage 14 in three pipe two ends, holes and gas leakage are disposed passage 15 leak stopping cement or tubule plug 7 and are blocked.Being connected with screen cloth pipe foremost of three hole pipes 1, preventing coal dust from entering extraction passage, least significant end is connected with common drainage tube.
When the gas of the present invention takes out the use of fixed stopper, connect recyclable Grouting Pipe 6, grouting pump, casting head 5.Casting head 5 is inserted in the injected hole of drainage system 2, and insert shear pin 9 with fixing casting head 5, then the gas of the present invention is taken out fixed stopper and inserts in the boring accomplished fluently, be inserted into suitable hole sealing depth.
Prepare sealing of hole serosity, and check the equipment such as grouting pump, recyclable Grouting Pipe 6, Pressure gauge, start slip casting.Serosity is through grouting pump recyclable Grouting Pipe 6 casting head 5 drainage system 2 three No. 14 pouches of hole pipe 1 slip casting passage 11 No. three pouches 12 of 10 No. two pouches.Three pouches gradually expand after entering slurry, by borehole sealing, grouting pressure gradually rises, when grouting pressure reaches aluminium foil 13 fracture pressure of No. two pouches 11 and No. three pouch 12 middle pressure check valve, aluminium foil 13 ruptures, and serosity enters in the boring of No. two pouches 11 and No. three pouch 12 mid portions.Slip casting is stopped when pressure raises the grouting pressure reaching to set again.
Firmly extract recyclable Grouting Pipe 6 and casting head 5.And clean recyclable Grouting Pipe 6, casting head 5, grouting pump treat use next time.
Gas leakage disposal pipe 8 is fixed on hole month, treats that the later stage carries out gas leakage and disposes.
When detecting that gas density is relatively low, can be disposed in the borehole fissure that super-fine material is sent into a pouch 10 and No. two pouch 11 mid portions by pipe 8 by gas leakage, degree of depth closure, makes leakage path block again.Reach to block purpose, improve gas density.
The pouch number of the present invention can be more than three, depending on the specific requirement according to mine technology personnel.
The gas of the present invention takes out the using method of fixed stopper, comprises the following steps:
(S1) at the connection antipriming pipe foremost of gas pumping fixed stopper drainage tube, the casting head 5 being connected with recyclable Grouting Pipe 6 is inserted in the inlet well of drainage system 2, shear pin 9 is inserted in shear pinhole 18 and fixes casting head；
(S2) pipe 8 spreading is disposed in gas leakage so that when stopper is inserted into hole sealing depth, gas leakage disposes pipe tensible to hole month position；
(S3) fixed for gas pumping stopper is disposed pipe together with recyclable Grouting Pipe and gas leakage and insert the suitable hole sealing depth of coal bed drilling, during insertion three hole pipe ends of stopper are docked with common drainage tube, make drainage tube tensible to hole month, in order to gas drainage under suction；
(S4) gas leakage disposal pipe is fixed on hole month position, in order to later stage gas leakage is disposed；
(S5) by fixed for gas pumping stopper toward during boring is inserted, prepare sealing of hole serosity, and check grouting pump and grouting pump upward pressure table；
(S6) other end of recyclable Grouting Pipe is connected with grouting pump, the pulp-inlet pipe of grouting pump is inserted in sealing of hole serosity, injection hole sealing can be started；
(S7) serosity flows through: grouting pump recyclable Grouting Pipe number pouch of casting head drainage system slip casting passage No. three pouches of No. two pouches, after three pouches all enter serosity, slip casing by pressure raises, when reaching predetermined grouting pressure, pressure check valve between No. two pouches and No. three pouches is opened, serosity enters in the coal bed drilling between No. two pouches and No. three pouches, and pressure raises again, stops slip casting when pressure reaches predetermined pressure；
(S8) firmly pulling out recyclable Grouting Pipe, shear pin is cut off by casting head, reclaims casting head and recyclable Grouting Pipe, and slip casting completes, and cleans grouting pump and recyclable Grouting Pipe, in order to slip casting next time uses；
(S9) later stage is along with the discharge of coal-bed gas, cracks in coal seam is gradually grown, sealing of hole section gas permeability of coal seam increases, carry out gas leakage when causing gas density to reduce to dispose, pass through high pressure equipment, material is disposed in ultra-fine gas leakage and is pressed into the position between a pouch and No. two pouches by gas leakage disposal pipe (8), super-fine material gradually penetrates in cracks in coal seam, the crack in closure sealing of hole section coal seam, the breathability making sealing of hole section coal seam reduces, reach the purpose of closure such that it is able to more efficient mash gas extraction.
It should be noted that; above-mentioned specific embodiment is merely exemplary; under the above-mentioned teaching of the present invention; those skilled in the art can carry out various improvement and deformation (such as becoming keeping in nacelle less than the negative pressure etc. outside containment by being kept above pressure in containment in gate nacelle) on the basis of above-described embodiment, and these improve or deformation all falls within protection scope of the present invention.It will be understood by those skilled in the art that specific descriptions above are intended merely to explain the purpose of the present invention, be not intended to limit the present invention.Protection scope of the present invention is limited by claim and equivalent thereof.
Claims (9)
- null1. a gas takes out fixed stopper，Including a pouch (10)、No. two pouches (11) and No. three pouches (12)，It is characterized in that: three holes pipe (1) pass from three pouches，Described three holes pipe (1) include an extraction passage (16)，Passage (15) is disposed in one slip casting passage (14) and a gas leakage，Slip casting passage (14) arranges slip casting connection aperture (19)，Dispose in gas leakage and gas leakage disposal connection aperture (20) is set on passage (15)，In one end of three hole pipes, drainage system (2) is set，Recyclable Grouting Pipe (6) is connected with the slip casting passage (14) of three hole pipes by drainage system (2)，Gas leakage is disposed pipe (8) and is connected with gas leakage disposal passage (15) of three hole pipes by drainage system (2)，Drainage system (2) includes that hole is disposed in injected hole and gas leakage，The injected hole of described drainage system (2) is connected by slip casting connection aperture (19) in slip casting aperture and three holes pipe (1)，The gas leakage of described drainage system (2) is disposed the gas leakage disposing aperture and three holes pipe (1) by leaking gas in hole and is disposed connection aperture (20) connection，On slip casting passage (14) in being positioned at three pouches, check valve is installed，Pressure check valve is installed on the slip casting passage between No. two pouches (11) and No. three pouches (12).
- 2. gas as claimed in claim 1 takes out fixed stopper, it is characterised in that arrange two shear pinhole (18) at the injected hole of drainage system (2), by the fixing casting head (5) of the shear pin (9) in shear pinhole (18).
- 3. gas as claimed in claim 2 takes out fixed stopper, it is characterised in that casting head (5) is inserted in one end of described drainage system (2) and pipe (8) is disposed in gas leakage, and the injected hole of the other end and gas leakage are disposed hole tubule plug (7) and sealed.
- 4. gas as claimed in claim 3 takes out fixed stopper, it is characterised in that the gas leakage between a pouch (10) and No. two pouches (11) is disposed and arranged gas leakage disposal boring (17) on passage (15).
- 5. gas as claimed in claim 4 takes out fixed stopper, it is characterised in that slip casting passage (14) two ends in described three holes pipe (1) and gas leakage dispose passage (15) two ends respectively with leak stopping cement or three hole pipe close closure.
- 6. gas as claimed in claim 5 takes out fixed stopper, it is characterised in that the connection foremost in three holes pipe (1) has screen cloth pipe, the least significant end in three holes pipe (1) to be connected with common drainage tube.
- 7. gas as claimed in claim 6 takes out fixed stopper, it is characterised in that the two ends of each pouch are pressed on three holes pipe (1) by metal pressure ring (4).
- 8. gas as claimed in claim 7 takes out fixed stopper, it is characterised in that gas leakage is disposed the length of pipe (8) and be disclosure satisfy that when stopper is inserted into hole sealing depth, extends to coal bed drilling oral area.
- 9. a gas takes out the using method of fixed stopper, it is characterised in that comprise the following steps:(S1) at the screen cloth pipe of connection foremost of gas pumping fixed stopper drainage tube, the casting head (5) being connected with recyclable Grouting Pipe (6) inserts in the injected hole of drainage system (2), shear pin (9) is inserted in shear pinhole (18) and fixes casting head；(S2) gas leakage is disposed pipe (8) spreading so that when the fixed stopper of gas pumping is inserted into hole sealing depth, gas leakage disposes pipe tensible to coal bed drilling mouth position；(S3) fixed for gas pumping stopper is disposed pipe together with recyclable Grouting Pipe and gas leakage and insert the suitable hole sealing depth of coal bed drilling, during insertion three hole pipe ends of fixed for gas pumping stopper are docked with common drainage tube, make common drainage tube tensible to coal bed drilling oral area；(S4) gas leakage disposal pipe is fixed on coal bed drilling mouth position；(S5) by fixed for gas pumping stopper toward during coal bed drilling inserts, prepare sealing of hole serosity, and check grouting pump and grouting pump upward pressure table；(S6) other end of recyclable Grouting Pipe is connected with grouting pump, the pulp-inlet pipe of grouting pump is inserted in sealing of hole serosity, injection hole sealing can be started；(S7) serosity flows through: grouting pump recyclable Grouting Pipe number pouch of casting head drainage system slip casting passage No. three pouches of No. two pouches, after three pouches all enter serosity, grouting pressure raises, when reaching predetermined grouting pressure, pressure check valve between No. two pouches and No. three pouches is opened, serosity enters in the coal bed drilling between No. two pouches and No. three pouches, and pressure raises again, stops slip casting when pressure reaches predetermined pressure；(S8) firmly pulling out recyclable Grouting Pipe, shear pin is cut off by casting head, reclaims casting head and recyclable Grouting Pipe, and slip casting completes；(S9) later stage gas density carries out gas leakage disposal when reducing, pass through high pressure equipment, material is disposed in ultra-fine gas leakage and is pressed into the position between a pouch and No. two pouches by gas leakage disposal pipe (8), ultra-fine gas leakage is disposed material and is gradually penetrated in cracks in coal seam, the crack in closure sealing of hole section coal seam.
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| CN201310402234.4A CN103452525B (en) | 2013-09-06 | 2013-09-06 | Gas takes out fixed stopper and using method thereof |
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| CN104763406A (en) * | 2015-01-29 | 2015-07-08 | 河南理工大学 | Method for measuring extraction influence radius based on bedding drilling gas emission characteristics |
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