CN105604522A - Polyurethane long-distance rapid fixed-point hole sealing device and method for underground drilling of coal mine - Google Patents
Polyurethane long-distance rapid fixed-point hole sealing device and method for underground drilling of coal mine Download PDFInfo
- Publication number
- CN105604522A CN105604522A CN201610173262.7A CN201610173262A CN105604522A CN 105604522 A CN105604522 A CN 105604522A CN 201610173262 A CN201610173262 A CN 201610173262A CN 105604522 A CN105604522 A CN 105604522A
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- Prior art keywords
- polyurethane
- valve
- filling tube
- sealing
- polyurethane foamed
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- 239000004814 polyurethane Substances 0.000 title claims abstract description 158
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 158
- 238000007789 sealing Methods 0.000 title claims abstract description 78
- 239000003245 coal Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005553 drilling Methods 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 165
- 229920003023 plastic Polymers 0.000 claims abstract description 8
- 239000004033 plastic Substances 0.000 claims abstract description 8
- 238000005187 foaming Methods 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 238000011049 filling Methods 0.000 claims description 57
- 238000009530 blood pressure measurement Methods 0.000 claims description 18
- 230000000694 effects Effects 0.000 claims description 11
- 238000005086 pumping Methods 0.000 claims description 9
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000011496 polyurethane foam Substances 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000011083 cement mortar Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000000605 extraction Methods 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract 10
- 239000007924 injection Substances 0.000 abstract 10
- 239000002002 slurry Substances 0.000 abstract 1
- 239000010409 thin film Substances 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 239000011799 hole material Substances 0.000 description 50
- 238000002156 mixing Methods 0.000 description 7
- 238000003756 stirring Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011538 cleaning material Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B33/12—Packers; Plugs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geophysics (AREA)
- Accessories For Mixers (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention provides a polyurethane long-distance rapid fixed-point hole sealing device for underground drilling of a coal mine. The polyurethane long-distance rapid fixed-point hole sealing device comprises supporting legs, a material injection barrel, a barrel cover, a pressure air connection pipe, feeding funnels, a powerless pipeline mixer, a first polyurethane foaming bag, a second polyurethane foaming bag, a pressure measuring or extraction pipe, a first material injection pipe, a second material injection pipe and a slurry injection pipe, wherein the barrel cover is horizontally arranged at the top of the material injection barrel; the material injection barrel is internally vertically provided with a separation plate for separating the inner part of the material injection barrel into a material storage chamber a and a material storage chamber b; the pressure air connection pipe and the two feeding funnels are arranged on the barrel cover; the upper end of the powerless pipeline mixer is arranged at the center of the bottom of the material injection barrel; and an inlet of the powerless pipeline mixer is communicated with the material storage chamber a and the material storage chamber b. The invention further discloses a hole sealing method. With the adoption of the polyurethane long-distance rapid fixed-point hole sealing device provided by the invention, the labor intensity of workers can be greatly alleviated; the polyurethane long-distance rapid fixed-point hole sealing device has the advantages of light weight, convenience for carrying, simplicity in operation and the like; after hole sealing work is finished, a plastic thin film in the material injection barrel is removed to finish the work, so that the procedure of washing the material injection barrel is avoided and the device is convenient and rapid.
Description
Technical field
The invention belongs to Safety of Coal Mine Production technical field, be specifically related to a kind of coal mine down-hole drilling polyurethane length apart from Fast Fixed-point hole sealing device and method.
Background technology
Drilling and sealing work is one of the most basic work of control of coalmine gas, and this work relates to Accurate Determining and the gas pumping effect etc. of coal-bed gas pressure. The size of coal-bed gas pressure, can reflect the height of coal seam gas-bearing capacity size, gas emission and the size of coal and gas outburst risk etc., formulates Firedamp precaution measures underlying parameter is provided for mine; In gas pumping process, if sealing quality is poor, can cause boring gas leakage serious, gas pumping weak effect, extraction cycle length up to standard, aggravation mine " are taken out-pick-Cai " problems such as balance, and can cause mash gas extraction concentration too low, not reach the standard that gas rationally utilizes, have to low concentration gas to be directly discharged into atmosphere, this not only causes the huge waste of clean energy resource, also can cause severe contamination to atmosphere. Therefore,, no matter from Gas Disaster control, protection of the environment, still, from the angle of the utilization of resources, ensure that good sealing quality is all significant.
The polyurethane sealing of hole that current down-hole extensively adopts is polyurethane a material and b to be expected, after mixing, to be sprinkled upon on the materials such as cotton yarn, then with directly sending in boring on pressure-measuring pipe (releasing pipe) outside hole. This method requires workman, within the extremely short time, polyurethane sealing of hole material is delivered to sealing of hole section, and operation step is played loaded down with trivial details, and workload is large, and because the operating time is tight, often causes polyurethane cannot send into boring compared with position, deep, also cannot realize long distance fixed point sealing of hole; In addition, often add a material and b material because field worker is free-hand, make a material and b material proportioning improper, also can affect polyurethane foam effect, reduce sealing quality; If when sealing of hole, workman operates not in time, or breaks down in operating process, cause the sealing of hole time longer, cause polyurethane to foam in advance, also cannot realize long distance fixed point sealing of hole, and can cause sealing quality undesirable; In sealing of hole process, polyurethane a material and b material mixed liquor may flow out boring, and workman need to adopt manual work mode to stop up the polyurethane flowing out and directly contact this chemical substance of polyurethane, can bring certain injury to health.
In sum, because existing polyurethane sealing aperture apparatus and method cannot realize long distance, fixed point, rapid hole sealing, thereby greatly reduce applying of the method, need badly and seek a kind of new apparatus and method and solve the problem of existing polyurethane sealing of hole method existence.
Summary of the invention
The present invention is in order to solve weak point of the prior art, provide a kind of and can improve drilling and sealing quality, for Accurate Determining coal-bed gas pressure, guarantee that coal mine down-hole drilling polyurethane length that gas pumping effect gives security is apart from Fast Fixed-point hole sealing device and method.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: coal mine down-hole drilling apart from Fast Fixed-point hole sealing device, comprises supporting leg, material feeding bucket, bung, pressure wind tube connector, batch meter, unpowered pipe-line mixer, the first polyurethane foamed bags, the second polyurethane foamed bags, pressure measurement or drainage tube, the first filling tube, the second filling tube and Grouting Pipe by polyurethane length, material feeding bucket is located on supporting leg, material feeding bottom of the barrel is upper coarse and lower fine conical structure, bung level is located at material feeding bucket top, between bung lower surface and material feeding bucket upper surface, be provided with sealing ring, in material feeding bucket, be vertically provided with material feeding bucket interior separation is the dividing plate of a material locker room and b material locker room, between edge, dividing plate upper end and bung lower surface, there is gap, batch meter is provided with two, press wind tube connector and two batch meters to be all located on bung, press wind tube connector be located at bung center and with material feeding bucket internal communication, a batch meter lower end is communicated with a material locker room, another batch meter lower end is communicated with b material locker room, unpowered pipe-line mixer upper end is located at place of material feeding barrel bottom center, the import of unpowered pipe-line mixer is communicated with a material locker room and b material locker room respectively,
The first polyurethane foamed bags and the second polyurethane foamed bags are all arranged in boring certain depth, the first polyurethane foamed bags is positioned at the outside of the second polyurethane foamed bags, the inner port of the first filling tube extend in the first polyurethane foamed bags along boring, the inner port of the second filling tube extend in the second polyurethane foamed bags along boring, the inner port of Grouting Pipe extend in the boring between the first polyurethane foamed bags and the second polyurethane foamed bags along boring, and the inner port of pressure measurement or drainage tube extend into along boring in the boring of the second polyurethane foamed bags inner side;
The outlet of unpowered pipe-line mixer is connected with conveying sebific duct, and the outlet of conveying sebific duct is connected with the first filling tube and the second filling tube respectively fast by snap joint.
The batch meter being communicated with a material locker room is provided with the first valve, and the batch meter being communicated with b material locker room is provided with the second valve, presses wind tube connector to be provided with the 3rd valve, and conveying sebific duct is provided with the 4th valve.
Coal mine down-hole drilling by polyurethane length apart from the length of Fast Fixed-point hole sealing device apart from Fast Fixed-point method for sealing, comprise the following steps:
(1), will treat that envelope boring cleans out, and the float coal in hole and landwaste are blown out;
(2), the requirement to sealed borehole length, the envelope that begins degree of depth relevant parameter according to gas pressure measurement or gas pumping work, determine the length of rational position and the first filling tube and second filling tube of the first polyurethane foamed bags and the second polyurethane foamed bags, the first polyurethane foamed bags, the second polyurethane foamed bags, the first filling tube, the second filling tube and Grouting Pipe are together fixed on to the relevant position of pressure measurement or drainage tube, are then sent to together assigned address in boring;
(3), stick plastic sheeting at the inwall of material feeding bucket, then in material feeding bucket, install highly moderate dividing plate, bung and material feeding bucket are tightly connected by the screw thread with sealing ring, by the pressure wind tube connector connecting downhole compressed-air system with the 3rd valve, for polyurethane a material with b material evenly mixes, conveying provides power;
(4), install unpowered pipe-line mixer in material feeding bottom of the barrel, unpowered pipe-line mixer be connected with the first filling tube and the second filling tube with conveying sebific duct, then the compressed-air system manipulating under coal mine is tested the sealing of material feeding bucket, ensures that sealing is good;
(5), by the batch meter with the first valve, polyurethane a material is injected in a material locker room, by the batch meter with the second valve, polyurethane b material is injected in b material locker room, close the first valve and the second valve;
(6), open successively the 3rd valve and the 4th valve, provide transmitting power by compressed-air system, polyurethane a material in material feeding bucket and polyurethane b material are pressed in unpowered line mixer simultaneously evenly to be mixed, unpowered line mixer adopts helical blade mixed structure, the polyurethane a material and the polyurethane b material that mix are transported to respectively by the first filling tube and the second filling tube in first polyurethane foamed bags and the second polyurethane foamed bags of boring designated depth, and the first polyurethane foamed bags and the second polyurethane foamed bags fast foaming expand; Under certain bulbs of pressure effect, the first polyurethane foamed bags and the second polyurethane foamed bags expand respectively and between hole wall, reach good contact, improve to greatest extent sealing quality, realize the length of polyurethane apart from Fast Fixed-point sealing of hole; Polyurethane a material and polyurethane b material mixed liquor output quantity and output speed are controlled jointly by the 3rd valve and the 4th valve;
(7), after material feeding completes, close successively the 3rd valve and the 4th valve, and conveying sebific duct is disconnected with the first filling tube and the second filling tube respectively, prevent from carrying the polyurethane a material that puts in place and b material mixed liquor along the first filling tube and the outflow of the second filling tube; After polyurethane sealing of hole completes, fast the plastic sheeting in material feeding bucket is taken out, again bung and material feeding bucket are tightly connected, then open rapidly the first valve and the second valve, respectively from two batch meter clocks add suitable quantity of water by the first valve and the second valve closing, then open successively the 3rd valve and the 4th valve, utilize and press wind-power to rinse to remain in polyurethane in unpowered line mixer and conveying sebific duct, prevent polyurethane foam blocking pipeline, in order to using next time;
(8), carry out after polyurethane sealing of hole, by cement mortar, sealing of hole with pressure is carried out in the sealing of hole space between the first polyurethane foamed bags and the second polyurethane foamed bags by Grouting Pipe;
(9), after, all sealing of hole completes, by pressure measurement or drainage tube, pressure measurement or gas pumping operation are carried out in the inside of holing.
Adopt technique scheme, the present invention has following technique effect:
1, bung is by the pressure wind tube connector connecting downhole compressed-air system with the 3rd valve, for carrying polyurethane a material and b material mixed liquor that power is provided, long apart from rapid hole sealing to realize.
2, bung is by the batch meter with the first valve and the second valve, polyurethane a material and b material to be poured into respectively in material feeding bucket in a material locker room and b material locker room simultaneously fast.
3, the material feeding bucket bottom metal tube that has been threaded, metal tube lower end is provided with a unpowered pipe-line mixer, to realize the Quick uniform stirring of polyurethane a material and b material.
4, the conveying sebific duct of unpowered pipe-line mixer bottom is provided with the 4th valve of controlling material feeding, and the 4th valve is in order to control the conveying of polyurethane mixed liquor.
5, on extraction or pressure-measuring pipe according to the position that need to determine the first polyurethane foamed bags and the second polyurethane foamed bags of sealed borehole length, then according to the length of its location positioning filling tube, in order to realize long distance fixed point sealing of hole.
6, polyurethane a material and b material are to press under wind-power effect, in the connection confined space of bung, material feeding bucket, conveying sebific duct, the first filling tube or the second filling tube, by the stirring that mixes of unpowered pipe-line mixer, be then transported in the first polyurethane foamed bags and the second polyurethane foamed bags.
In sum, coal mine polyurethane length provided by the invention is by the mutual linking effect between each parts apart from Fast Fixed-point hole sealing device, realizes polyurethane length apart from the efficient sealing of hole of Fast Fixed-point. Its beneficial effect is: one, can realize polyurethane material length apart from Fast Fixed-point sealing of hole; Two, the setting of dividing plate makes polyurethane a material and the isolation mutually of b material in material feeding bucket, can not be in contact with one another and foaming in advance, and due to the existence of plastic sheeting, exempt the operation of cleaning material feeding bucket, convenient and swift; Three, complete equipment is simple to operate, reduces workman's labour intensity, shortens the sealing of hole time, improves sealing of hole efficiency; Four, polyurethane a material and b material reasonable mixture ratio, and stir under the effect of unpowered pipe-line mixer, reduce the waste of polyurethane, reduce sealing of hole cost; Five, it is airtight mixing and carry the space of polyurethane, has reduced the injury because directly contact chemical substance is brought human body.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
As shown in Figure 1, coal mine down-hole drilling of the present invention, comprises supporting leg 1, material feeding bucket 2, bung 3, presses wind tube connector 4, batch meter 5, unpowered pipe-line mixer 6, the first polyurethane foamed bags 7, the second polyurethane foamed bags 8, pressure measurement or drainage tube 11, the first filling tube 9, the second filling tube 10 and Grouting Pipe 12 apart from Fast Fixed-point hole sealing device by polyurethane length, material feeding bucket 2 is located on supporting leg 1, material feeding bucket 2 bottoms are upper coarse and lower fine conical structure, bung 3 levels are located at material feeding bucket 2 tops, between bung 3 lower surfaces and material feeding bucket 2 upper surfaces, be provided with sealing ring 13, interior being vertically provided with material feeding bucket 2 interior separations of material feeding bucket 2 is the dividing plate 14 of a material locker room and b material locker room, between dividing plate 14 edges, upper end and bung 3 lower surfaces, there is gap, batch meter 5 is provided with two, press wind tube connector 4 and two batch meters 5 to be all located on bung 3, press wind tube connector 4 be located at bung 3 centers and with material feeding bucket 2 internal communication, batch meter 5 lower ends are communicated with a material locker room, another batch meter 5 lower ends are communicated with b material locker room, unpowered pipe-line mixer 6 upper ends are located at material feeding bucket 2 places of bottom centre, the import of unpowered pipe-line mixer 6 is communicated with a material locker room and b material locker room respectively.
The first polyurethane foamed bags 7 and the second polyurethane foamed bags 8 are all arranged in boring 15, the first polyurethane foamed bags 7 is positioned at the outside of the second polyurethane foamed bags 8, the inner port of the first filling tube 9 extend in the first polyurethane foamed bags 7 along boring 15, the inner port of the second filling tube 10 extend in the second polyurethane foamed bags 8 along boring 15, the inner port of Grouting Pipe 12 is along in boring 15 borings 15 that extend between the first polyurethane foamed bags 7 and the second polyurethane foamed bags 8, the inner port of pressure measurement or drainage tube 11 extend in the boring 15 of the second polyurethane foamed bags 8 inner sides along boring 15.
The outlet of unpowered pipe-line mixer 6 is connected with conveying sebific duct 16, and the outlet of conveying sebific duct 16 is connected with the first filling tube 9 and the second filling tube 10 respectively fast by snap joint.
The batch meter 5 being communicated with a material locker room is provided with the first valve 17, and the batch meter 5 being communicated with b material locker room is provided with the second valve 18, presses wind tube connector 4 to be provided with the 3rd valve 19, and conveying sebific duct 16 is provided with the 4th valve 20.
Coal mine down-hole drilling by polyurethane length apart from the length of Fast Fixed-point hole sealing device apart from Fast Fixed-point method for sealing, comprise the following steps:
(1), will treat that envelope boring 15 cleans out, and the float coal in hole and landwaste are blown out;
(2), the requirement to sealed borehole length, the envelope that begins degree of depth relevant parameter according to gas pressure measurement or gas pumping work, determine the length of rational position and the first filling tube 9 and second filling tube 10 of the first polyurethane foamed bags 7 and the second polyurethane foamed bags 8, the first polyurethane foamed bags 7, the second polyurethane foamed bags 8, the first filling tube 9, the second filling tube 10 and Grouting Pipe 12 are together fixed on to the relevant position of pressure measurement or drainage tube 11, are then sent to together boring 15 interior assigned addresses;
(3), stick plastic sheeting at the inwall of material feeding bucket 2, then in material feeding bucket 2, install highly moderate dividing plate 14, by bung 3 and material feeding bucket 2 by being tightly connected with the screw thread of sealing ring 13, by the pressure wind tube connector 4 connecting downhole compressed-air systems with the 3rd valve 19, for polyurethane a material with b material evenly mixes, conveying provides power;
(4), install unpowered pipe-line mixer 6 in material feeding bucket 2 bottoms, unpowered pipe-line mixer 6 be connected with the first filling tube 9 and the second filling tube 10 with conveying sebific duct 16, then the compressed-air system manipulating under coal mine is tested the sealing of material feeding bucket 2, ensures that sealing is good;
(5), by the batch meter 5 with the first valve 17, polyurethane a material is injected in a material locker room, by the batch meter 5 with the second valve 18, polyurethane b material is injected in b material locker room, close the first valve 17 and the second valve 18;
(6), open successively the 3rd valve 19 and the 4th valve 20, provide transmitting power by compressed-air system, polyurethane a material in material feeding bucket 2 and polyurethane b material are pressed in unpowered line mixer simultaneously evenly to be mixed, unpowered line mixer comprises mixing tube and is located at the helical blade in mixing tube along mixing tube axial direction, helical blade two ends are rotatably connected in mixing tube by installing rack, under pressure, polyurethane a material and polyurethane b material are when by helical blade, helical blade rotation makes polyurethane a material and polyurethane b material reach mixing object, the polyurethane a material and the polyurethane b material that mix are transported to respectively by the first filling tube 9 and the second filling tube 10 in first polyurethane foamed bags 7 and the second polyurethane foamed bags 8 of boring 15 designated depth, the first polyurethane foamed bags 7 and the second polyurethane foamed bags 8 fast foamings expand, under certain bulbs of pressure effect, the first polyurethane foamed bags 7, the second polyurethane foamed bags 8 expand respectively and between hole wall, reach good contact, improve to greatest extent sealing quality, realize the length of polyurethane apart from Fast Fixed-point sealing of hole, polyurethane a material and polyurethane b material mixed liquor output quantity and output speed are controlled jointly by the 3rd valve 19 and the 4th valve 20,
(7), after material feeding completes, close successively the 3rd valve 19 and the 4th valve 20, and conveying sebific duct 16 is disconnected with the first filling tube 9 and the second filling tube 10 respectively, prevent from carrying the polyurethane a material and the b material mixed liquor that put in place to flow out along the first filling tube 9 and the second filling tube 10; After polyurethane sealing of hole completes, fast the plastic sheeting in material feeding bucket 2 is taken out, again bung 3 and material feeding bucket 2 are tightly connected, then open rapidly the first valve 17 and the second valve 18, from two batch meter 5 clocks add suitable quantity of water, the first valve 17 and the second valve 18 are closed respectively, then open successively the 3rd valve 19 and the 4th valve 20, utilize and press wind-power to rinse the polyurethane remaining in unpowered line mixer and conveying sebific duct 16, prevent polyurethane foam blocking pipeline, in order to using next time;
(8), carry out after polyurethane sealing of hole, by Grouting Pipe 12 use cement mortar, sealing of hole with pressure is carried out in the sealing of hole space between the first polyurethane foamed bags 7 and the second polyurethane foamed bags 8;
(9), after, all sealing of hole completes, " Direct Determination of coal mine underground coal bed gas pressure " promulgated according to State Administration of Quality and Technical Supervision is (AQ/T1047-2007) by pressure measurement or pressure measurement is carried out in 15 inside of holing to drainage tube 11 or gas connection is taken out operation.
Above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although the present invention is had been described in detail with reference to above-described embodiment, those of ordinary skill in the art is to be understood that: still can modify or be equal to replacement the present invention, and not departing from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (3)
1. coal mine down-hole drilling, by polyurethane length apart from Fast Fixed-point hole sealing device, is characterized in that: comprise supporting leg, material feeding bucket, bung, pressure wind tube connector, batch meter, unpowered pipe-line mixer, the first polyurethane foamed bags, the second polyurethane foamed bags, pressure measurement or drainage tube, the first filling tube, the second filling tube and Grouting Pipe, material feeding bucket is located on supporting leg, material feeding bottom of the barrel is upper coarse and lower fine conical structure, bung level is located at material feeding bucket top, between bung lower surface and material feeding bucket upper surface, be provided with sealing ring, in material feeding bucket, be vertically provided with material feeding bucket interior separation is the dividing plate of a material locker room and b material locker room, between edge, dividing plate upper end and bung lower surface, there is gap, batch meter is provided with two, press wind tube connector and two batch meters to be all located on bung, press wind tube connector be located at bung center and with material feeding bucket internal communication, a batch meter lower end is communicated with a material locker room, another batch meter lower end is communicated with b material locker room, unpowered pipe-line mixer upper end is located at place of material feeding barrel bottom center, the import of unpowered pipe-line mixer is communicated with a material locker room and b material locker room respectively,
The first polyurethane foamed bags and the second polyurethane foamed bags are all arranged in boring certain depth, the first polyurethane foamed bags is positioned at the outside of the second polyurethane foamed bags, the inner port of the first filling tube extend in the first polyurethane foamed bags along boring, the inner port of the second filling tube extend in the second polyurethane foamed bags along boring, the inner port of Grouting Pipe extend in the boring between the first polyurethane foamed bags and the second polyurethane foamed bags along boring, and the inner port of pressure measurement or drainage tube extend into along boring in the boring of the second polyurethane foamed bags inner side;
The outlet of unpowered pipe-line mixer is connected with conveying sebific duct, and the outlet of conveying sebific duct is connected with the first filling tube and the second filling tube respectively fast by snap joint.
Coal mine down-hole drilling according to claim 1 by polyurethane length apart from Fast Fixed-point hole sealing device, it is characterized in that: the batch meter being communicated with a material locker room is provided with the first valve, the batch meter being communicated with b material locker room is provided with the second valve, press wind tube connector to be provided with the 3rd valve, conveying sebific duct is provided with the 4th valve.
Coal mine down-hole drilling according to claim 2 by polyurethane length apart from the length of Fast Fixed-point hole sealing device apart from Fast Fixed-point method for sealing, it is characterized in that: comprise the following steps:
(1), will treat that envelope boring cleans out, and the float coal in hole and landwaste are blown out;
(2), the requirement to sealed borehole length, the envelope that begins degree of depth relevant parameter according to gas pressure measurement or gas pumping work, determine the length of rational position and the first filling tube and second filling tube of the first polyurethane foamed bags and the second polyurethane foamed bags, the first polyurethane foamed bags, the second polyurethane foamed bags, the first filling tube, the second filling tube and Grouting Pipe are together fixed on to the relevant position of pressure measurement or drainage tube, are then sent to together assigned address in boring;
(3), stick plastic sheeting at the inwall of material feeding bucket, then in material feeding bucket, install highly moderate dividing plate, bung and material feeding bucket are tightly connected by the screw thread with sealing ring, by the pressure wind tube connector connecting downhole compressed-air system with the 3rd valve, for polyurethane a material with b material evenly mixes, conveying provides power;
(4), install unpowered pipe-line mixer in material feeding bottom of the barrel, unpowered pipe-line mixer be connected with the first filling tube and the second filling tube with conveying sebific duct, then the compressed-air system manipulating under coal mine is tested the sealing of material feeding bucket, ensures that sealing is good;
(5), by the batch meter with the first valve, polyurethane a material is injected in a material locker room, by the batch meter with the second valve, polyurethane b material is injected in b material locker room, close the first valve and the second valve;
(6), open successively the 3rd valve and the 4th valve, provide transmitting power by compressed-air system, polyurethane a material in material feeding bucket and polyurethane b material are pressed in unpowered line mixer simultaneously evenly to be mixed, unpowered line mixer adopts helical blade mixed structure, the polyurethane a material and the polyurethane b material that mix are transported to respectively by the first filling tube and the second filling tube in first polyurethane foamed bags and the second polyurethane foamed bags of boring designated depth, and the first polyurethane foamed bags and the second polyurethane foamed bags fast foaming expand; Under certain bulbs of pressure effect, the first polyurethane foamed bags and the second polyurethane foamed bags expand respectively and between hole wall, reach good contact, improve to greatest extent sealing quality, realize the length of polyurethane apart from Fast Fixed-point sealing of hole; Polyurethane a material and polyurethane b material mixed liquor output quantity and output speed are controlled jointly by the 3rd valve and the 4th valve;
(7), after material feeding completes, close successively the 3rd valve and the 4th valve, and conveying sebific duct is disconnected with the first filling tube and the second filling tube respectively, prevent from carrying the polyurethane a material that puts in place and b material mixed liquor along the first filling tube and the outflow of the second filling tube; After polyurethane sealing of hole completes, fast the plastic sheeting in material feeding bucket is taken out, again bung and material feeding bucket are tightly connected, then open rapidly the first valve and the second valve, respectively from two batch meter clocks add suitable quantity of water by the first valve and the second valve closing, then open successively the 3rd valve and the 4th valve, utilize and press wind-power to rinse to remain in polyurethane in unpowered line mixer and conveying sebific duct, prevent polyurethane foam blocking pipeline, in order to using next time;
(8), carry out after polyurethane sealing of hole, by cement mortar, sealing of hole with pressure is carried out in the sealing of hole space between the first polyurethane foamed bags and the second polyurethane foamed bags by Grouting Pipe;
(9), after, all sealing of hole completes, by pressure measurement or drainage tube, pressure measurement or gas pumping operation are carried out in the inside of holing.
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| CN201610173262.7A CN105604522B (en) | 2016-03-24 | 2016-03-24 | Coal mine down-hole drilling polyurethane long range Fast Fixed-point hole sealing device and method |
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| CN117531411A (en) * | 2024-01-09 | 2024-02-09 | 漳州安越新材料科技有限公司 | Batching mixing arrangement |
| CN117531411B (en) * | 2024-01-09 | 2024-04-09 | 漳州安越新材料科技有限公司 | Batching mixing arrangement |
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