CN104563958B - A kind of hole sealing device - Google Patents

A kind of hole sealing device Download PDF

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Publication number
CN104563958B
CN104563958B CN201510010812.9A CN201510010812A CN104563958B CN 104563958 B CN104563958 B CN 104563958B CN 201510010812 A CN201510010812 A CN 201510010812A CN 104563958 B CN104563958 B CN 104563958B
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tube
expansion assembly
pump
pump drainage
concentric tube
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CN104563958A (en
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代广渊
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代广渊
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/13Methods or devices for cementing, for plugging holes, crevices, or the like
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F7/00Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose

Abstract

The invention discloses a kind of hole sealing device, including pipe plug, hollow floral tube, expansion assembly I, pump drainage concentric tube, blast component, expansion assembly II and Grouting Pipe, the releasing pipe being sequentially connected;Pump drainage concentric tube is respectively mounted between expansion assembly I and explosion component, explosion component and expansion assembly II, expansion assembly II and releasing pipe, to be concentric inside and outside two-tube, connect to form isolation cavity configuration by dividing plate between inner and outer pipes, pump drainage concentric tube inner tube connection Grouting Pipe;Expansion assembly I, expansion assembly II connect check valve by being constituted positioned at middle pump drainage concentric tube and the drainage cloth being wrapped in outside it in the inner tube of pump drainage concentric tube;Explosive valve of the component by pump drainage concentric tube and in pump drainage concentric tube inner tube that explode is constituted.The hole sealing device of simple in construction, safe and convenient to use, extraction and slip casting integration of the invention, while providing the application process of the hole sealing device, solves the problem of sealing effectiveness present in existing sealing of hole process is undesirable.

Description

A kind of hole sealing device
Technical field
The present invention relates to a kind of hole sealing device, it is mainly used in the plugging equipment of mine down-hole gas control.
Background technology
Gas bearing capacity is also increased therewith in the deepening year by year of coal mining, coal seam, highly gassy mine, coal and gas prominent ore deposit The increase of well ratio.Gas has turned into current so that the serious restraining factors of coal production from now on, are the main bottles of coal development One of neck.This, which is met, in hard-pumped mining coal seam requires that difficulty is very big, even in coal and gas outburst mine, one A little ore deposits have no alternative but be forced to close for this, and Gonna breakthrough coal mine gas yoke solves extraction difficult most important to current coal industry.Ore deposit Well gas not only has safely huge threat to coal production, also there is very strong negative effect to environment.Gas it is main Composition is exactly methane, and available data shows, destruction of the methane to ozone layer is as many as 16 times of carbon dioxide, produced greenhouse Effect is then 21 times of carbon dioxide.But it again be cleaning the high heating value energy, due in existing coal production to underground watt Defect on this treatment technology so that substantial amounts of coal-bed gas is unable to high concentration discharge, it is difficult to reaches the requirement gone after profits and advoided disadvantages, makes Fire damp evil show fully, profit it is hard to find.
The key of gas pumping is sealing of hole, the extraction of current coal-bed gas be after releasing pipe is installed to drilling, then Blocked using organic material or inorganic material, including including the artificial sealing of hole of clay, foaming polymeric materials sealing of hole, cement mortar fluid-tight Hole.Clay sealing of hole:Yellow mud or cement are used around releasing pipe, material requirements of the clay method of pore sealing to sealing of hole be not high, but right The technological requirement of sealing of hole is but very high.It is limited to the soft durometer of drillable length and clay, it is very difficult to by the closed airtight of envelope that drill, It is unreal that the carelessness of slightly one link can result in its bore closed.Clay method for sealing sealed borehole length is shorter, and yellow mud meets water Soften, density is bad, easy gas leakage.Artificial sealing of hole is rolled into a ball using yellow mud, cement, borehole sealing quality is poor, activity duration length, labor Fatigue resistance is big.Foaming polymeric materials sealing of hole:Foaming polymeric materials polyurethane sealing of hole is used around releasing pipe, due to polymerization Foaming materials multiple is high, light weight, simple with technique, sealed reliable, is used widely the features such as sealing of hole is rapid.But Current chemical polyurethane hole sealing technology mainly uses free-hand sealing of hole, and sealed borehole length only has 3~5 m, it is impossible to effectively closure drilling Gas pumping loosens fissure zone, and gas extraction concentration is not high, and foaming polymeric materials sealing of hole is in coal seam crushed zone especially at soft point There is collapse hole and gas leakage serious phenomenon during layer sealing of hole, and its sealing material cost is high, operation requires high.While organic chemistry sealing of hole Material reaction acutely have generation high temperature, there is strong smell to generate, reaction speed is too fast, and the presetting period is non-adjustable, and sealing of hole is long Degree is whard to control.Cement grout sealing of hole:Around releasing pipe with cement grout method of pore sealing be at aperture it is good and sound only sizing device Afterwards, cement grout is pressed into grouting pump and drilled, can be with the longer drilling of sealing of hole sections.But cement material reaction speed is slow, coagulate Gu rear condensate rate is big and dry and cracked, easily shrink, effective sealing of hole sealed borehole length is undesirable, does not realize sealing of hole with pressure.It is only applicable to Rising borehole, and it is lower to drilling, it is unreal to concordant hole and low-angle borehole sealing, the sealed borehole length that wide-angle drills is not reached Preferably require, it is impossible to the closed requirement of sealing of hole.
It can be seen that the problem of existing hole sealing device and its application process all have certain is, it is necessary to further improve.
The content of the invention
It is an object of the invention to solve problem present in current techniques there is provided one kind it is simple in construction, using secure side Just, the hole sealing device of extraction and slip casting integration, while the application process of the hole sealing device is provided, during the existing sealing of hole of solution The problem of sealing effectiveness of presence is undesirable.
To reach above-mentioned purpose, the technology used in the present invention means are:A kind of hole sealing device, including the pipe being sequentially connected Stifled, hollow floral tube, expansion assembly I, pump drainage concentric tube, blast component, expansion assembly II and Grouting Pipe, releasing pipe;It is described to take out Arrange concentric tube set three sections, be respectively mounted with expansion assembly I and explosion component, between explosion component and expansion assembly II, and Between expansion assembly II and releasing pipe;The pump drainage concentric tube is concentric inside and outside two-tube, is connected between inner and outer pipes by dividing plate Connect to form isolation cavity configuration, pump drainage concentric tube inner tube connection Grouting Pipe;The expansion assembly I, expansion assembly II are by positioned at centre Pump drainage concentric tube and be wrapped in outside it drainage cloth composition, connect check valve in the inner tube of pump drainage concentric tube;The blast Explosive valve of the component by pump drainage concentric tube and in pump drainage concentric tube inner tube is constituted.
Further, the expansion assembly I is side drainage cloth, the non-permeable cloth structure in side, and be set to point to drainage side Mark.
Further, the application method of the hole sealing device is:
The first, hole packer is installed:Pipe plug is arranged on to one of hollow floral tube, the other end connection expansion of hollow floral tube first Component I one end, need to be installed according to the label orientation on expansion assembly I, one section of pump drainage concentric tube then be connected, sealing of hole Device plug one end is put into drilling, exposes installation explosion component on the pump drainage concentric tube of aperture one end, then successively other Pump drainage concentric tube, explosion component, expansion assembly II are installed together, it is ensured that the distance between expansion assembly II and expansion assembly I Meet the sealed borehole length of design, after overall feeding drilling, 15~20mm pump drainage concentric tube is reserved in aperture, then casting head is installed Onto the inner tube of pump drainage concentric tube, it will be smeared when connecting each joint with glue, to ensure that the intensity of connection is reliable;
2nd, slip casting:The air inlet pipeline and pulp pipeline on grouting pump are connected, to examine equipment and pipeline to run before slip casting It is whether normal, then the pulp-absorbing pipe of grouting pump is put into the container containing injecting paste material, intake valve is opened to the one of grout outlet End is closed when having slurries outflow, and grout outlet is connected on casting head, and intake valve slip casting is opened again, and starting the slip casting stage will At the uniform velocity slip casting;Pump pressure can be increased after observation expansion assembly II slip castings are expanded, simultaneously water is bright for outflow clear water in aperture hole to be drilled It is aobvious to become hour, the injection speed of grouting pump it is from fast to slow again by accelerating slowly when, the speed for improving slip casting turns pump pressure down, finally treats Midge speed is substantially slack-off, the phenomenon that builds the pressure occurs, and pressure gauge shows that pressure reaches more than 1.0MPa, closes pump and stops slip casting, to even Grouting Pipe and casting head can be separated after the pipeline pressure release connect;
3rd, pump arrangement is washed:The cleaning of grouting pump is timely carried out after the completion of slip casting, it is ensured that next time normal makes With.
The beneficial effects of the present invention are:Releasing pipe and filling system integration, without external hole packer, extraction assembly It is installed to connection after drilling and starts the automatic hole sealing that grouting pump can be achieved entirely to drill, it is easy to operate, efficient;Slurries during slip casting The rapid expanding coagulation system of rear and front end is full of by the slip casting passage in releasing pipe first, effective support is formed to drilling, Make to form the region of high stress around sealing of hole sections drilling, it is to avoid persistently produce crack after sealing of hole, form leakage path;Rapid expanding, shape Into sealing of hole chamber band pressure grouting, grouting pressure is not less than 1.0MPa, promotes slurries to be pressed into the wall of a borehole crack, is full of, blocks drilling week The crack enclosed, reduces its permeability, plays a part of closure leakage path at initial stage;Sealed borehole length can be according to the requirement of drilling design Change the length of pump drainage concentric tube to realize the regulation of sealed borehole length;Integrated design, saves substantial amounts of working time and artificial Cost, the technique for realizing " a two stifled notes " sealing of hole with pressure, with preferable closely knit plugging effect;Sealing of hole strong adaptability:It can be achieved The special drill sealing of holes such as coal seam, rock stratum, coal rock layer mixing drilling.
Brief description of the drawings
The present invention is further elaborated with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the structural representation of pump drainage concentric tube of the present invention.
In figure:1st, pipe plug, 2, hollow floral tube, 3, expansion assembly I, 4, pump drainage concentric tube, 5, blast component, 6, expansion assembly II, 7, Grouting Pipe, 8, releasing pipe, 9, inner tube, 10, check valve, 11, explosive valve.
Embodiment
A kind of hole sealing device as shown in Figure 1, 2, including be sequentially connected pipe plug 1, hollow floral tube 2, expansion assembly I3, take out Arrange concentric tube 4, blast component 5, expansion assembly II6 and Grouting Pipe 7, releasing pipe 8;The pump drainage concentric tube 4 sets three sections, point Between explosion component 5 and expansion assembly II6, and expansion assembly II6 and it An Zhuan not taken out with expansion assembly I3 and explosion component 5 Put between pipe 8;The pump drainage concentric tube 4 is concentric inside and outside two-tube, connects to form separate cavities by dividing plate between inner and outer pipes Structure, the connection Grouting Pipe 7 of pump drainage concentric tube inner tube 9;The expansion assembly I3, expansion assembly II6 are same by the pump drainage positioned at centre Heart pipe and the drainage cloth composition being wrapped in outside it, connect check valve 10 in the inner tube of pump drainage concentric tube;It is described blast component 5 by Pump drainage concentric tube and the explosive valve 11 in pump drainage concentric tube inner tube are constituted.
The expansion assembly I3 be side drainage cloth, the non-permeable cloth structure in side, and be set to point to drainage side mark.
The application method of the hole sealing device is:
The first, hole packer is installed:Pipe plug is arranged on to one of hollow floral tube, the other end connection expansion of hollow floral tube first Component I one end, need to be installed according to the label orientation on expansion assembly I, one section of pump drainage concentric tube then be connected, sealing of hole Device plug one end is put into drilling, exposes installation explosion component on the pump drainage concentric tube of aperture one end, then successively other Pump drainage concentric tube, explosion component, expansion assembly II are installed together, it is ensured that the distance between expansion assembly II and expansion assembly I Meet the sealed borehole length of design, after overall feeding drilling, 15~20mm pump drainage concentric tube is reserved in aperture, then casting head is installed Onto the inner tube of pump drainage concentric tube, it will be smeared when connecting each joint with glue, to ensure that the intensity of connection is reliable;
2nd, slip casting:The air inlet pipeline and pulp pipeline on grouting pump are connected, to examine equipment and pipeline to run before slip casting It is whether normal, then the pulp-absorbing pipe of grouting pump is put into the container containing injecting paste material, intake valve is opened to the one of grout outlet End is closed when having slurries outflow, and grout outlet is connected on casting head, and intake valve slip casting is opened again, and starting the slip casting stage will At the uniform velocity slip casting;Pump pressure can be increased after observation expansion assembly II slip castings are expanded, simultaneously water is bright for outflow clear water in aperture hole to be drilled It is aobvious to become hour, the injection speed of grouting pump it is from fast to slow again by accelerating slowly when, the speed for improving slip casting turns pump pressure down, finally treats Midge speed is substantially slack-off, the phenomenon that builds the pressure occurs, and pressure gauge shows that pressure reaches more than 1.0MPa, closes pump and stops slip casting, to even Grouting Pipe and casting head can be separated after the pipeline pressure release connect;
3rd, pump arrangement is washed:The cleaning of grouting pump is timely carried out after the completion of slip casting, it is ensured that next time normal makes With.
The effect of pipe plug is to prevent that ickings and impurity are entered in pipe when the present apparatus from pushing in the borehole.The work of hollow floral tube With the accumulation regions of gas when being gas drainage under suction, multiple spot contacts the passage of increase gas release with coal seam.Grouting pump in connection, note Pulp material is first poured into expansion assembly by the intermediate inner tube road of pump drainage concentric tube, and expansion assembly is by the concentric pipe fitting of pump drainage Combined with being rolled in their outside drainabilities very strong clothes.Certain pressure is reached when expansion assembly filters moisture expansion and heaved Form two to block up, explosive valve on explosion component is opened under the effect of the pressure, slurries enter the intracavitary of closing, gas is from row Gas port is discharged by exhaust passage, and slip casting completes slip casting after reaching 1MP pressure.Releasing pipe and filling system integration, without Extraction assembly, is installed to connection after drilling and starts the automatic hole sealing that grouting pump can be achieved entirely to drill, behaviour by external hole packer Make easy, efficient;Slurries are solidified by rapid expanding of the slip casting passage in releasing pipe full of rear and front end fill first during slip casting Put, effective support is formed to drilling, make to form the region of high stress around sealing of hole sections drilling, it is to avoid persistently produce crack, shape after sealing of hole Into leakage path;Rapid expanding, forms sealing of hole chamber band pressure grouting, and grouting pressure is not less than 1.0MPa, promotes slurries press-in drilling Wall crack, is full of, blocks the crack of drilling surrounding, reduce its permeability, play a part of closure leakage path at initial stage;Sealing of hole is long Degree can change the length of pump drainage concentric tube to realize the regulation of sealed borehole length according to the requirement of drilling design;Integrated design, section Substantial amounts of working time and cost of labor are saved, the technique for realizing " a two stifled notes " sealing of hole with pressure, with preferably closely knit closure effect Really;Sealing of hole strong adaptability:The special drill sealing of holes such as coal seam, rock stratum, coal rock layer mixing drilling can be achieved.
Application embodiment is only intended to illustrate technical characteristic disclosed in the present application, and those skilled in the art pass through simple Carried out change is replaced, the scope that the application is protected is still fallen within.

Claims (1)

1. a kind of hole sealing device, it is characterised in that:Including the pipe plug being sequentially connected(1), hollow floral tube(2), expansion assembly I(3)、 Pump drainage concentric tube(4), blast component(5), expansion assembly II(6)And Grouting Pipe(7), releasing pipe(8);The pump drainage is concentric Pipe(4)Three sections are set, is respectively mounted and expansion assembly I(3)With explosion component(5), explosion component(5)With expansion assembly II (6)Between, and expansion assembly II(6)And releasing pipe(8)Between;The pump drainage concentric tube(4)To be concentric inside and outside two-tube, Connect to form isolation cavity configuration by dividing plate between inner and outer pipes, pump drainage concentric tube inner tube(9)Connect Grouting Pipe(7);It is described swollen Swollen component I(3), expansion assembly II(6)By being constituted positioned at middle pump drainage concentric tube and the drainage cloth being wrapped in outside it, taking out Check valve is connected in the inner tube for arranging concentric tube(10);The blast component(5)By pump drainage concentric tube and installed in pump drainage concentric tube Explosive valve in inner tube(11)Composition;The expansion assembly I(3)For side drainage cloth, the non-permeable cloth structure in side, and setting refer to Marked to drainage side;
Its application method, is characterised by:
The first, hole packer is installed:Pipe plug is arranged on to one of hollow floral tube, the other end connection expansion assembly of hollow floral tube first I one end, need to be installed according to the label orientation on expansion assembly I, one section of pump drainage concentric tube then be connected, sealing of hole Device plug one end is put into drilling, exposes installation explosion component on the pump drainage concentric tube of aperture one end, then successively other Pump drainage concentric tube, explosion component, expansion assembly II are installed together, it is ensured that between expansion assembly II and expansion assembly I Distance meet the sealed borehole length of design, after overall feeding drilling, 15~20mm pump drainage concentric tube is reserved in aperture, then note Slurry head is installed in the inner tube of pump drainage concentric tube, will be smeared when connecting each joint with glue, can with the intensity for ensureing connection Lean on;
2nd, slip casting:Connect the air inlet pipeline and pulp pipeline on grouting pump, to be examined before slip casting equipment and pipeline run whether Normally, then the pulp-absorbing pipe of grouting pump is put into the container containing injecting paste material, opening one end of intake valve to grout outlet has Slurries are closed when flowing out, and grout outlet is connected on casting head, and intake valve slip casting is opened again, and starting the slip casting stage will be at the uniform velocity Slip casting;Pump pressure can be increased after observation expansion assembly II slip castings are expanded, simultaneously water is obvious for outflow clear water in aperture hole to be drilled Become hour, the injection speed of grouting pump it is from fast to slow again by accelerating slowly when, the speed for improving slip casting turns pump pressure down, finally waits to inhale Starch speed substantially slack-off, the phenomenon that builds the pressure occur, pressure gauge shows that pressure reaches more than 1.0MPa, closes pump and stops slip casting, to even Grouting Pipe and casting head can be separated after the pipeline pressure release connect;
3rd, pump arrangement is washed:The cleaning of grouting pump is timely carried out after the completion of slip casting, it is ensured that next time normal is used.
CN201510010812.9A 2015-01-09 2015-01-09 A kind of hole sealing device Active CN104563958B (en)

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CN106761777A (en) * 2016-12-17 2017-05-31 中国二十二冶集团有限公司 The control method of per-fore pouring liquid with small pipe grouting pressure and grouting amount
CN106958455A (en) * 2017-04-13 2017-07-18 辽宁工程技术大学 A kind of highly gassy mine drilling and sealing device
CN107014554A (en) * 2017-06-01 2017-08-04 华北科技学院 Gas parametric measurement probe in a kind of coal seam
CN107939333B (en) * 2018-01-10 2020-02-18 河南理工大学 Multistage pressure-bearing type permeable hole sealing method and device
CN109083614A (en) * 2018-09-07 2018-12-25 佛山皖和新能源科技有限公司 Gas drainage pouch wound form hole packer and its application method
CN112267848A (en) * 2020-10-23 2021-01-26 中国矿业大学 Grouting method and device capable of automatically sealing holes and preventing grouting pump pipeline from being blocked

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SU1435760A1 (en) * 1986-12-24 1988-11-07 Ленинградский горный институт им.Г.В.Плеханова Arrangement for isolating hazard zones in wells
CN103195388A (en) * 2013-03-28 2013-07-10 郑州煤炭工业(集团)有限责任公司 Two-plugging hole packer and plugging grouting method
CN203081397U (en) * 2013-05-14 2013-07-24 平顶山市安泰华矿用安全设备制造有限公司 Grouting bag type hole packer
CN103334714A (en) * 2013-07-23 2013-10-02 蔡长辉 Bag device for quickly sealing holes
CN103590782A (en) * 2013-11-28 2014-02-19 华北科技学院 Under-pressure grouting hole sealing device and method for gas extraction drill air bag blocking
CN103615212A (en) * 2013-12-13 2014-03-05 新乡市嘉汇科技有限公司 Two-blocking one-grouting grouting and hole sealing device
CN203476278U (en) * 2013-09-12 2014-03-12 王玉奇 Grouting type hole sealing and automatic water discharging device for underground drilling gas extraction

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1435760A1 (en) * 1986-12-24 1988-11-07 Ленинградский горный институт им.Г.В.Плеханова Arrangement for isolating hazard zones in wells
CN103195388A (en) * 2013-03-28 2013-07-10 郑州煤炭工业(集团)有限责任公司 Two-plugging hole packer and plugging grouting method
CN203081397U (en) * 2013-05-14 2013-07-24 平顶山市安泰华矿用安全设备制造有限公司 Grouting bag type hole packer
CN103334714A (en) * 2013-07-23 2013-10-02 蔡长辉 Bag device for quickly sealing holes
CN203476278U (en) * 2013-09-12 2014-03-12 王玉奇 Grouting type hole sealing and automatic water discharging device for underground drilling gas extraction
CN103590782A (en) * 2013-11-28 2014-02-19 华北科技学院 Under-pressure grouting hole sealing device and method for gas extraction drill air bag blocking
CN103615212A (en) * 2013-12-13 2014-03-05 新乡市嘉汇科技有限公司 Two-blocking one-grouting grouting and hole sealing device

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